CN103323243A - Radial sliding bearing test bed with elastic support - Google Patents
Radial sliding bearing test bed with elastic support Download PDFInfo
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- CN103323243A CN103323243A CN201310215538XA CN201310215538A CN103323243A CN 103323243 A CN103323243 A CN 103323243A CN 201310215538X A CN201310215538X A CN 201310215538XA CN 201310215538 A CN201310215538 A CN 201310215538A CN 103323243 A CN103323243 A CN 103323243A
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Abstract
The invention relates to a radial sliding bearing test bed with an elastic support. The radial sliding bearing test bed with the elastic support is assembled by a test bed base, back-up bearings, a main shaft, a testing bearing, a jet device and a main shaft locating device. The test bed base is used for carrying out location on the back-up bearings and providing lubricating oil channels, the two ends of the main shaft are supported by the back-up bearings, the back-up bearings are angular contact bearings mounted in pairs in a back to back mode, the inner ring and the outer ring of the back-up bearing at the front end of the main shaft are both axially fixed, the inner ring of the back-up bearing at the rear end of the main shaft is axially fixed, and certain axial movement is allowed on the outer ring of the back-up bearing at the rear end of the main shaft. The testing bearing is suspended in the middle of the main shaft and capable of floating up and down, guiding devices are mounted at the two ends of the testing bearing to prevent the testing bearing from deflection without limiting the movement of the testing bearing in the radial plane, an elastic element is mounted outside the testing bearing, and the support stiffness of the testing bearing can be adjusted by changing the stiffness of a spring. Bolt mounting holes are formed in the test bed base, and the test bed can be mounted on a suitable T-shaped groove platform.
Description
Technical field
The present invention relates to a kind of flexibly mounted bush(ing) bearing experiment table that has.This experiment table can carry out the characteristic test research of bush(ing) bearing under the elastic foundation condition.
Background technology
The outstanding advantages such as bush(ing) bearing is large, shock-resistant with load-bearing capacity, resistance to shock is good are widely used in rotating machinery.Present most of bush(ing) bearing experiment table is mainly used to measure the static characteristics of sliding bearing, characterizes the parameter of static characteristic such as temperature, pressure, oil film thickness etc., and minority bush(ing) bearing experiment table can be measured the dynamic perfromance of sliding bearing.Part bush(ing) bearing experiment table is restricted so that test type and the version of bearing because structure is inconvenient to provide the operating load of bearing, and can not be changed the experiment bearing.Also have part bush(ing) bearing experiment table to be subject to the restriction of lubricating condition, can not carry out experimental study changing under the support stiffness condition to sliding bearing radially.
Summary of the invention
The objective of the invention is the defective for the prior art existence, provide a kind of can being used for to be convenient for changing under the high-speed working condition condition, again the experiment bearing and can to change the flexibly mounted bush(ing) bearing experiment table of having of support stiffness.
For achieving the above object, design of the present invention is:
Task of the present invention is to provide a kind of high-speed slide bearing experiment table that can carry out the bush(ing) bearing experimental study under the elastic bearing condition, this will ask experiment table can satisfy the low speed lubricating condition can satisfy the high-speed lubrication condition again, has the function of regulating bearing stiffness, the bush(ing) bearing experiment table can provide rational operating load to the experiment bearing, the actual condition of simulation sliding bearing, and to the experiment bearing change carry out experimental study so that on an experiment table, can carry out the bush(ing) bearing of polytype and version.This experiment table adopts the inversion type structure, and the two ends of main shaft are block bearing, and the experiment bearing is housed in the middle of the main shaft, and flexible member is equipped with in experiment bearing outside; This experiment table is designed with the passage of lubricating oil turnover and the device that block bearing is carried out jet lubrication at the experiment table pedestal, under low-speed conditions, experiment table can adopt lower-cost grease lubrication mode, under high-speed condition, can start the jet lubrication mode of experiment table, block bearing is lubricated.
According to the foregoing invention design, the technical solution used in the present invention is:
A kind of inversion type high speed bush(ing) bearing experiment table comprises experiment table pedestal, fulcrum arrangement, main shaft, experiment bearing, jetting system and main shaft positioning device, and it is characterized in that: described front-end of spindle has keyway, can connect the external drive system; Front end support is: a pair of angular contact bearing of installing is back-to-back arranged, the inner ring of these two angular contact bearings is fixed on the cascaded surface of main shaft by a set nut and a locating ring, the outer ring of these two angular contact bearings is fixed on an experiment table base and an experiment table by two rolling bearing end caps and covers, and the rolling bearing end cap is fixed on experiment table base and the experiment table by socket head cap screw and covers; One of two angular contact bearing outer ring sandwich and locating ring have the oily passage of turnover with wide sparge ring on the experiment table base, oil inlet passage is connected sparge ring; The same end group of the rear end fulcrum arrangement of described main shaft and fixed form is originally the same, unique difference is that the outer ring of two angular contact bearings in rear end does not contact with rear end rolling bearing end cap, between rolling bearing end cap and rolling bearing end cap and the experiment table base O RunddichtringO is housed all, is used for preventing the leakage of lubricating oil; The maximum gauge place of main shaft is equipped with the experiment bearing: the part that is enclosed within main shaft is the experiment bearing shell, the experiment bearing shell is embedded in the experiment bearing seat, the sliding bearing end cap is equipped with at experiment bearing seat two ends, on the experiment bearing seat three guide spiro rods are installed, these three guide spiro rods become 120 ° uniform, and regulate the installation site by the nut of its two ends assembling, flexible member is equipped with in experiment bearing seat outside: be comprised of one group of support spring and spring retainer, can regulate the experiment bearing stiffness by changing spring rate.
Described experiment table pedestal is by base, several parts of loam cake and bearing (ball) cover form, upper cover part has oil inlet passage, oil-in is round mouth, be processed with fine thread, the convenient lubricating oil pipe that connects, base portion has drainback passage, and drainback passage also is round mouth, be processed with fine thread, connect oil returning tube, base portion is designed with datum strip, is convenient to test the measurement that is installed on experimental result of bearing, bearing (ball) cover is divided into front end end cap and rear end end cap, two kinds of structures are slightly different, and the front end end cap contacts with the front end block bearing, carry out the bearing location, the rear end end cap does not contact with the rear end block bearing, and the experiment table pedestal processes after by iron casting.
Described block bearing is the high precision angular contact bearing, can carry out axial location after the mounted in pairs, and limit speed is high.
Described main axle structure is staged, and front end can be connected with drive system by flat key, and the supporting cascaded surface can be installed high-precision rolling bearing, and bush(ing) bearing can be installed in the centre, materials'use 40Cr, the perhaps better material of mechanical property.
Described experiment bearing is comprised of experiment bearing shell and experiment bearing seat, adopt split type structure, the experiment bearing shell with 40Cr or bearing steel as idiosome, the bearing shell surface casting has antifriction quality and the better Babbitt alloy material of wearing quality, the experiment bearing is used for fixing bearing shell and connects testing the charger of bearing imposed load, materials'use 40Cr or bearing steel, experiment bearing outside has elastic component, and is made of spring retainer and one group of spring.
Described jetting system mainly can be connected with the oil inlet passage in the experiment table pedestal loam cake, by reducing the size of grease channel size, improves lubricating oil flow speed, thereby lubricating oil is ejected on the block bearing.Materials'use 40Cr or bearing steel.
Described main shaft positioning device comprises that set nut and locating ring form.Set nut is used for the block bearing inner ring is carried out axial location, is connected and fixed by screw thread and main shaft, and locating ring and sparge ring are wide, is installed between the block bearing of every a pair of back-to-back installation, helps set nut that block bearing is carried out axial location.
The present invention compares with existing bush(ing) bearing experiment table technology, has following outstanding substantive distinguishing features and remarkable advantage: this experiment table can be regulated the support stiffness of experiment bearing, can carry out bearing test under elastic foundation; Experiment table can carry out the bush(ing) bearing experimental study of polytype and version; Experiment table had not only carried out grease lubrication but also can carry out oil lubrication bearing, can satisfy the lubricating requirement under low speed and the high-speed working condition; Experiment table can reduce the impact that the vibration of drive system can avoid the main shaft thermal deformation that experimental result is brought again on the impact of axis system.
Description of drawings
Fig. 1 is the general structure three-dimensional plot of bush(ing) bearing experiment table of the present invention.
Fig. 2 is the cross-sectional schematic of bush(ing) bearing experiment table of the present invention.
Fig. 3 is the left view of bush(ing) bearing experiment table of the present invention.
Fig. 4 is the vertical view of bush(ing) bearing experiment table of the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail.
Embodiment one:
Referring to Fig. 1～Fig. 4, originally has flexibly mounted bush(ing) bearing experiment table, comprise experiment table pedestal, fulcrum arrangement, main shaft (1), experiment bearing, jetting system and main shaft positioning device, it is characterized in that: described main shaft (1) front end has keyway, can connect the external drive system; Front end support is: a pair of angular contact bearing (5) of installing is back-to-back arranged, the inner ring of these two angular contact bearings (5) is fixed on the cascaded surface of main shaft (1) by a set nut (3) and a locating ring (10), the outer ring of these two angular contact bearings (5) is fixed on an experiment table base (18) and the experiment table loam cake (7) by two rolling bearing end caps (2), and rolling bearing end cap (2) is fixed on experiment table base (18) and the experiment table loam cake (7) by socket head cap screw (8); One of two angular contact bearings (5) outer ring sandwich and locating ring (10) have the oily passage of turnover with wide sparge ring (6) on the experiment table base (18), oil inlet passage is connected sparge ring (6); The same end group of the rear end fulcrum arrangement of described main shaft (1) and fixed form is originally the same, unique difference is that the outer ring of two angular contact bearings in rear end (5) does not contact with rear end rolling bearing end cap (9), between rolling bearing end cap (2) and rolling bearing end cap (9) and the experiment table base (18) O RunddichtringO (4) is housed all, is used for preventing the leakage of lubricating oil; The maximum gauge place of main shaft (1) is equipped with the experiment bearing: the part that is enclosed within main shaft (1) is experiment bearing shell (11), it is inner that the experiment bearing shell is embedded in experiment bearing seat (15), sliding bearing end cap (14) is equipped with at experiment bearing seat (15) two ends, on the experiment bearing seat (15) three guide spiro rods (12) are installed, this 120 ° of three guide spiro rods (12) one-tenth is uniform, and execute the nut (13) of joining by its two ends and regulate the installation site, flexible member is equipped with in experiment bearing seat (15) outside: be comprised of one group of support spring (16) and spring retainer (17), can regulate the experiment bearing stiffness by changing spring rate.
Embodiment two:
The present embodiment and embodiment one are basic identical, and special feature is as follows: described experiment table pedestal is comprised of described experiment table base (18), experiment table loam cake (7) and bearing (ball) cover (2,9); Experiment table loam cake (7) part has oil inlet passage, and oil-in is round mouth, is processed with fine thread, the convenient lubricating oil pipe that connects, and experiment table base (18) part has drainback passage, and drainback passage is round mouth also, is processed with fine thread, connects oil returning tube; Be carved with datum strip on the base, be convenient to test the measurement that is installed on experimental result of bearing, bearing (ball) cover (2,9) is divided into front end bearing (ball) cover (2) and rear end bearing end cap (9), two kinds of structures are slightly different, front end bearing (ball) cover (2) contacts with the front end block bearing, carry out bearing location, rear end bearing end cap (9) does not contact with the rear end block bearing, and the experiment table pedestal processes after by iron casting.Described block bearing is high precision angular contact bearing (5), can carry out axial location after the mounted in pairs, and limit speed is high, and load-bearing capacity is large, and front and back are respectively with a pair of.Described main shaft (1) structure is stepped construction, materials'use 40Cr, the perhaps better material of mechanical property.Described experiment bearing is comprised of experiment bearing shell (11) and experiment bearing seat (15), adopt split type structure, experiment bearing shell (11) with 40Cr or bearing steel as idiosome, this bearing shell surface casting has antifriction quality and the better Babbitt alloy material of wearing quality, experiment bearing seat (15) is used for fixing experiment bearing shell (11) and connects testing the charger of bearing imposed load, materials'use 40Cr or bearing steel; Sliding bearing end cap (14) is equipped with at experiment bearing seat (15) two ends, and material is aluminium; Experiment bearing seat (15) outer cover has elastic component: be comprised of one group of support spring (16) and spring retainer (17).Described sparge ring (6) can be connected with the oil inlet passage in the experiment table pedestal loam cake (7), by reducing the size of grease channel size, improves lubricating oil flow speed, thereby lubricating oil is ejected on the block bearing; Materials'use 40Cr or bearing steel.
Embodiment three:
As shown in Figure 2, have in the flexibly mounted bush(ing) bearing experiment table, main shaft (1) front end has keyway, can connect the external drive system, the front end carrying plane is equipped with a pair of angular contact bearing (5) of installing back-to-back, the inner ring of two angular contact bearings (5) is fixed on the cascaded surface of main shaft by set nut (3) and locating ring (10), the outer ring of two angular contact bearings (5) is fixed on experiment table base (18) and the experiment table loam cake (7) by two rolling bearing end caps (2), rolling bearing end cap (2) is fixed on the experiment table pedestal by socket head cap screw (8), one of two angular contact bearings (5) outer ring sandwich and locating ring (10) are with wide sparge ring (6), the same end group of the rear end bearing of inversion type high speed bush(ing) bearing experiment table main shaft (1) and fixed form is originally the same, unique difference is that the outer ring of two angular contact bearings in rear end (5) does not contact with rear end rolling bearing end cap (9), between rolling bearing end cap (2) and rolling bearing end cap (9) and the experiment table pedestal O RunddichtringO (4) is housed all, be used for preventing the leakage of lubricating oil, the maximum gauge place of main shaft (1) is equipped with the experiment bearing, the part that is enclosed within main shaft (1) is experiment bearing shell (11), it is inner that the experiment bearing shell is embedded in experiment bearing seat (15), sliding bearing end cap (14) is equipped with at experiment bearing seat (15) two ends, on the experiment bearing seat (15) three guide spiro rods (12) are installed, can find out that in conjunction with Fig. 3 120 ° of three guide spiro rods (12) one-tenth are uniform, guide spiro rod (12) is regulated the installation site by nut (13), can find out in conjunction with Fig. 2 and 4, have the oily passage of turnover on the experiment table base (18), and the base fixed orifice.
Experiment table base (18) can be selected suitable bolt to be installed on the T-shaped groove to be fixed, after main shaft (1) is installed according to above-mentioned assembling mode, system provides power by external drive, fore-end is because bearing enclose all carries out axial restraint, the impact that can avoid the vibration of external drive system that main shaft (1) run stability is brought, the supporting part of rear end main shaft (1), because axially fixing of inner ring, the outer ring is not fixed, can allow certain axial displacement, this design can avoid main shaft to produce the bending of main shaft (1) owing to reasons such as thermal deformations, affect experimental result, main shaft (1) center section is equipped with the experiment bearing, between experiment bearing and the experiment table pedestal three guide spiro rods (12) are housed, this mounting means can guarantee to test bearing and move in the sagittal plane and can prevent from again testing deflection before and after the bearing, the flexible supporting system of experiment bearing outer cover, consisted of by one group of support spring (16) and spring retainer (17), can be by changing the rigidity of spring (16), regulate the support stiffness of experiment bearing, under the condition that slowly runs, experiment table block bearing part can adopt the lubricating system of grease lubrication, and sparge ring this moment (6) only plays a part to help angular contact bearing (5) outer ring axial location; Under the high-speed rotation condition, the experiment table block bearing partly adopts the jet lubrication mode in the oil lubrication, and sparge ring this moment (6) had not only played the effect of help angular contact bearing (5) outer ring axial location but also played lubricating oil is injected into effect in the angular contact bearing (5).
The principle of work of the present embodiment is:
Main shaft (1) is connected with the external drive system by flat key by the front end keyway, provide power to drive running by the external drive system, block bearing partly provides the supporting at two ends and the location of main shaft, under different working speeds, can select the proper lubrication mode that block bearing is lubricated, because the rotation of main shaft (1), at main shaft (1) and experiment installing positions of bearings, owing to there being certain sliding bearing gap, after externally loading system provides certain operating load, mineralization pressure oil film in the experiment bearing, realize the neat liquid Frotteurism of bush(ing) bearing, then can measure the experiment bearing according to different requirement of experiment, measure and dynamic characteristic mensuration such as the static characteristic of bush(ing) bearing.
Claims (6)
1. one kind has flexibly mounted bush(ing) bearing experiment table, comprise experiment table pedestal, fulcrum arrangement, main shaft (1), experiment bearing, jetting system and main shaft positioning device, it is characterized in that: described main shaft (1) front end has keyway, can connect the external drive system; Front end support is: a pair of angular contact bearing (5) of installing is back-to-back arranged, the inner ring of these two angular contact bearings (5) is fixed on the cascaded surface of main shaft (1) by a set nut (3) and a locating ring (10), the outer ring of these two angular contact bearings (5) is fixed on an experiment table base (18) and the experiment table loam cake (7) by two rolling bearing end caps (2), and rolling bearing end cap (2) is fixed on experiment table base (18) and the experiment table loam cake (7) by socket head cap screw (8); One of two angular contact bearings (5) outer ring sandwich and locating ring (10) have the oily passage of turnover with wide sparge ring (6) on the experiment table base (18), oil inlet passage is connected sparge ring (6); The same end group of the rear end fulcrum arrangement of described main shaft (1) and fixed form is originally the same, unique difference is that the outer ring of two angular contact bearings in rear end (5) does not contact with rear end rolling bearing end cap (9), between rolling bearing end cap (2) and rolling bearing end cap (9) and the experiment table base (18) O RunddichtringO (4) is housed all, is used for preventing the leakage of lubricating oil; The maximum gauge place of main shaft (1) is equipped with the experiment bearing: the part that is enclosed within main shaft (1) is experiment bearing shell (11), it is inner that the experiment bearing shell is embedded in experiment bearing seat (15), sliding bearing end cap (14) is equipped with at experiment bearing seat (15) two ends, on the experiment bearing seat (15) three guide spiro rods (12) are installed, this 120 ° of three guide spiro rods (12) one-tenth is uniform, and execute the nut (13) of joining by its two ends and regulate the installation site, flexible member is equipped with in experiment bearing seat (15) outside: be comprised of one group of support spring (16) and spring retainer (17), can regulate the experiment bearing stiffness by changing spring rate.
2. claim 1 is described has a flexibly mounted bush(ing) bearing experiment table, it is characterized in that described experiment table pedestal is comprised of described experiment table base (18), experiment table loam cake (7) and bearing (ball) cover (2,9); Experiment table loam cake (7) part has oil inlet passage, and oil-in is round mouth, is processed with fine thread, the convenient lubricating oil pipe that connects, and experiment table base (18) part has drainback passage, and drainback passage is round mouth also, is processed with fine thread, connects oil returning tube; Be carved with datum strip on the base, be convenient to test the measurement that is installed on experimental result of bearing, bearing (ball) cover (2,9) is divided into front end bearing (ball) cover (2) and rear end bearing end cap (9), two kinds of structures are slightly different, front end bearing (ball) cover (2) contacts with the front end block bearing, carry out bearing location, rear end bearing end cap (9) does not contact with the rear end block bearing, and the experiment table pedestal processes after by iron casting.
3. claim 1 is described has a flexibly mounted bush(ing) bearing experiment table, it is characterized in that described block bearing is high precision angular contact bearing (5), can carry out axial location after the mounted in pairs, and limit speed is high, and load-bearing capacity is large, front and back each with a pair of.
4. claim 1 is described has a flexibly mounted bush(ing) bearing experiment table, it is characterized in that described main shaft (1) structure is stepped construction, materials'use 40Cr, the perhaps better material of mechanical property.
5. claim 1 is described has a flexibly mounted bush(ing) bearing experiment table, it is characterized in that described experiment bearing is comprised of experiment bearing shell (11) and experiment bearing seat (15), adopt split type structure, experiment bearing shell (11) with 40Cr or bearing steel as idiosome, this bearing shell surface casting has antifriction quality and the better Babbitt alloy material of wearing quality, experiment bearing seat (15) is used for fixing experiment bearing shell (11) and connects testing the charger of bearing imposed load, materials'use 40Cr or bearing steel; Sliding bearing end cap (14) is equipped with at experiment bearing seat (15) two ends, and material is aluminium; Experiment bearing seat (15) outer cover has elastic component: be comprised of one group of support spring (16) and spring retainer (17).
6. claim 1 is described has a flexibly mounted bush(ing) bearing experiment table, it is characterized in that described sparge ring (6) can be connected with the oil inlet passage in the experiment table pedestal loam cake (7), by reducing the size of grease channel size, improve lubricating oil flow speed, thereby lubricating oil is ejected on the block bearing; Materials'use 40Cr or bearing steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310215538.XA CN103323243B (en) | 2013-06-03 | 2013-06-03 | There is flexibly mounted bush(ing) bearing experiment table |
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| CN201310215538.XA CN103323243B (en) | 2013-06-03 | 2013-06-03 | There is flexibly mounted bush(ing) bearing experiment table |
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| CN103323243A true CN103323243A (en) | 2013-09-25 |
| CN103323243B CN103323243B (en) | 2016-03-30 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104198188A (en) * | 2014-09-24 | 2014-12-10 | 中航工业哈尔滨轴承有限公司 | Roller bearing simulation test positioning device |
| CN105605097A (en) * | 2015-12-16 | 2016-05-25 | 上海大学 | Mechanically-adjustable-clearance semi-active radial sliding bearing |
| CN106525432A (en) * | 2016-12-26 | 2017-03-22 | 河南科技大学 | Dual-rotor bearing testing machine test cabin and recovered oil structure |
| CN109855870A (en) * | 2018-12-30 | 2019-06-07 | 洛阳轴承研究所有限公司 | A kind of bearing test device |
| CN109883687A (en) * | 2019-03-21 | 2019-06-14 | 广州机械科学研究院有限公司 | The simulation test evaluation system and method for the bionical seal member of high-antiwear self-lubricating |
| CN110289737A (en) * | 2019-08-13 | 2019-09-27 | 南京汽轮电机(集团)有限责任公司 | A kind of generator bearing shell protective device |
| CN111716306A (en) * | 2020-06-30 | 2020-09-29 | 扬州大学 | Bearing-rotor experiment table with automatic centering and locking functions |
| CN111811817A (en) * | 2020-07-15 | 2020-10-23 | 合肥工业大学 | High-precision fluid dynamic pressure sliding bearing comprehensive performance test platform |
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| CN102607846A (en) * | 2012-03-08 | 2012-07-25 | 江苏大学 | Comprehensive test stand for water-lubricated bearings for pumps |
| CN202453184U (en) * | 2011-12-29 | 2012-09-26 | 浙江天马轴承股份有限公司 | Parameter measurement device for tapered roller bearing |
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| CS271189B1 (en) * | 1988-12-22 | 1990-08-14 | Rathousky Jiri | Device for axial antifriction bearings testing |
| CN201130095Y (en) * | 2007-12-06 | 2008-10-08 | 上海大学 | Radial sliding bearing test stand |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198188A (en) * | 2014-09-24 | 2014-12-10 | 中航工业哈尔滨轴承有限公司 | Roller bearing simulation test positioning device |
| CN105605097A (en) * | 2015-12-16 | 2016-05-25 | 上海大学 | Mechanically-adjustable-clearance semi-active radial sliding bearing |
| CN106525432A (en) * | 2016-12-26 | 2017-03-22 | 河南科技大学 | Dual-rotor bearing testing machine test cabin and recovered oil structure |
| CN109855870A (en) * | 2018-12-30 | 2019-06-07 | 洛阳轴承研究所有限公司 | A kind of bearing test device |
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| CN109883687A (en) * | 2019-03-21 | 2019-06-14 | 广州机械科学研究院有限公司 | The simulation test evaluation system and method for the bionical seal member of high-antiwear self-lubricating |
| CN110289737A (en) * | 2019-08-13 | 2019-09-27 | 南京汽轮电机(集团)有限责任公司 | A kind of generator bearing shell protective device |
| CN110289737B (en) * | 2019-08-13 | 2024-04-19 | 南京汽轮电机集团电站设备技术服务有限公司 | Generator bearing bush protection device |
| CN111716306A (en) * | 2020-06-30 | 2020-09-29 | 扬州大学 | Bearing-rotor experiment table with automatic centering and locking functions |
| CN111716306B (en) * | 2020-06-30 | 2021-06-11 | 扬州大学 | Bearing-rotor experiment table with automatic centering and locking functions |
| CN111811817A (en) * | 2020-07-15 | 2020-10-23 | 合肥工业大学 | High-precision fluid dynamic pressure sliding bearing comprehensive performance test platform |
| CN111811817B (en) * | 2020-07-15 | 2022-07-12 | 合肥工业大学 | High-precision fluid dynamic pressure sliding bearing comprehensive performance test platform |
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|---|---|
| CN103323243B (en) | 2016-03-30 |
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