CN109632207A - Detect the detection device of bearing seal leakproofness - Google Patents
Detect the detection device of bearing seal leakproofness Download PDFInfo
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- CN109632207A CN109632207A CN201811588932.7A CN201811588932A CN109632207A CN 109632207 A CN109632207 A CN 109632207A CN 201811588932 A CN201811588932 A CN 201811588932A CN 109632207 A CN109632207 A CN 109632207A
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- test
- detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of detection devices for detecting bearing seal leakproofness, it include detection seat, test chamber is provided in the detection seat, live spindle is equipped in the test chamber, and live spindle is rotatably installed on detection seat, the power mechanism of its rotation of driving is connected in the live spindle, fixing sleeve is further fixed in the test chamber, and fixing sleeve is set in live spindle, installation cavity is formed between the fixing sleeve and live spindle, the test suite includes a test bearing and two test sealing elements, described two test sealing elements set up separately in test bearing two sides, air pressure detector is provided with outside the detection seat, and the air pressure detection probe of air pressure detector is inserted into test sealing element, medium feeding mechanism is connected on the detection seat, media outlet is additionally provided in the test chamber, it can be tested The sealing performance of bearing seal in a variety of contexts, and it is easy to operate, detection efficiency is higher, and noise is small.
Description
Technical field
The present invention relates to bearing apparatus field, especially a kind of detection device for detecting bearing seal leakproofness.
Background technique
Bearing can bear different size of load in high-speed motion, bearing by complete precise ball and retainer and
Internal and external cycle composition, hub bearing are widely used in general industry, automobile industry, agricultural, chemical industry and white goods industry, wheel hub
The properties detection of bearing is an important link of the bearing before factory, and the detection of the sealing performance of bearing is items
Most important performance causes bearing because bearing usually will receive the intrusion of external contaminants in the process of running in capable of detecting
Abrasive wear, fatigue flake so corresponding sealing structure is arranged around bearing can effectively reduce the damage of bearing,
Guarantee the safe operation of vehicle, operates in for verifying bearing seal structure in bearing close under the natural environments such as wind, sand and dust, muddy water
Sealing property, it is desirable to be able to simulate the experimental assembly of the environment, but the prior art lacks this corresponding experimental facilities and is sealed
Property detection.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of detection device for detecting bearing seal leakproofness, can
To detect the sealing performance of bearing seal in a variety of contexts, and it is easy to operate, detection efficiency is higher, and noise is small.
The present invention provides a kind of detection device for detecting bearing seal leakproofness, includes detection seat, the detection seat
It is inside provided with test chamber, live spindle is equipped in the test chamber, and live spindle is rotatably installed on detection seat, the rotation
Turn the power mechanism for being connected with its rotation of driving on main shaft, is further fixed on fixing sleeve in the test chamber, and fixing sleeve is set in
In live spindle, the installation cavity for installing test suite, the test group are formed between the fixing sleeve and live spindle
Part includes a test bearing and two test sealing elements, and described two test sealing elements set up separately in test bearing two sides, described
Air pressure detector is provided with outside detection seat, and the air pressure detection probe of air pressure detector is inserted into test sealing element, the inspection
It surveys on seat and is connected with the medium feeding mechanism for being passed through surrounding medium in its test chamber, be additionally provided with medium in the test chamber
Outlet.
The beneficial effect being arranged in this way is: using the above scheme, power mechanism makes live spindle rotation to drive rotation
Test bearing rotation on main shaft, is in test bearing when sealing propertytest is tested and carried out under rotation running environment, thus
Make sealing propertytest experiment closer to true environment, and then keeps detected data more accurate.Seat is detected for rotation
Turn main shaft plays fixed supporting role, while fixing sleeve is arranged, and is formed between fixing sleeve and live spindle solid for installing
The installation cavity of test suite is determined, to keep test bearing in test suite and test sealing element stable complete in test chamber
It is tested at sealing propertytest, and the detection device can detect different rings according to the difference for the surrounding medium being passed through in test chamber
The sealing performance of sealing element, the more various inspection in all directions that ensure that test sealing property of sealing component of simulated environment are tested under border
It surveys, and the air pressure of the inside by air pressure detector test test sealing element, during being sealed property test experience, when
It tests air pressure in sealing element and the leakproofness of external pressure test sealing element when identical is good, it is on the contrary then leakproofness is bad
Good, which carrys out the leakproofness of reaction test sealing element, and response data is relatively intuitive more accurate and easy to operate.
It includes air-heater and/or air blower and/or suction pump, institute that the present invention, which is further arranged to the medium feeding mechanism,
It states and is connected with water tank on suction pump, the delivery outlet of the air-heater, air blower and suction pump is connected with test chamber.
The beneficial effect being arranged in this way is: using the above scheme, when simulation test sealing element is in hot wind environment, heat
The delivery outlet of blower is connected in test chamber, and test sealing element is under hot wind environment after opening air-heater rear chamber, is being carried out
Hot wind passes through air pressure detector when testing to detect the air pressure in test sealing element, when in test sealing element while testing
Air pressure and the leakproofness of external pressure test sealing element when identical are good, on the contrary then leakproofness is not good.It is close in simulation test
When sealing is in the sand and dust of field, the delivery outlet of air blower is connected in test chamber, and sandy soil are added in test chamber, is opened
Air blower unlatching makes to form sand and dust circulation in cavity, is carrying out being also required to measure the air pressure in test sealing element when sand and dust experiment,
Principle is identical as hot wind experiment, because the sand and dust when external pressure is greater than test sealing element air pressure inside outside bearing can pass through survey
Examination sealing element enters in test bearing.When testing sealing element progress waterproof experiment, the delivery outlet on suction pump is connected to inspection
Survey it is intracavitary, suction pump connect water tank and connect a water jet make the water in water tank by test of the suction pump into test chamber it is close
Sealing sprinkling, the environment of simulation is more various, and replaces more convenient quick when medium feeding mechanism, raising detection efficiency.
The present invention is further arranged to be provided with triple valve on the media outlet, the first outlet and heat of the triple valve
The return air inlet of blower is connected, and second outlet is connected with the return air inlet of air blast, and third exports that is connected with water tank
The beneficial effect being arranged in this way is: using the above scheme, by being provided with triple valve on media port, different media is supplied
Outlet different on device insertion triple valve is answered, different enviromental cycles is formed, fitting this arrangement enhances media outlet is set
With property, and save space.
It includes driving motor, feed belt and motor mount, institute that the present invention, which is further arranged to the power mechanism,
It states live spindle to be sequentially connected by the output end of feed belt and driving motor, the driving motor is fixedly mounted on motor peace
It fills on seat, the regulating device for adjusting feed belt elasticity is provided on the motor mount.
The beneficial effect being arranged in this way is: using the above scheme, live spindle is defeated by feed belt and driving motor
Outlet transmission connection, feed belt can tighten power to live spindle one at runtime, to make in live spindle band dynamic bearing
A load, in this way the normal operation environment of the better simulation test bearing of energy can be applied when rotation to the inner ring of test bearing,
And feed belt can be adjusted for rotation by regulating device in feed belt relaxation after driving motor long time running
The level of tightness for turning main shaft makes feed belt keep tightening for live spindle, so that bearing to be tested be made persistently to be passed
The loading force of belt is sent, so that the sealing property of sealing component for detecting detection device is more accurate, and regulating device allows to
More convenient and quicker adjusts feed belt for the level of tightness of live spindle.
The present invention is further arranged to be connected with bottom plate under the detection seat, and sliding rail, the electricity are provided on the bottom plate
Machine mounting base is slidably arranged on sliding rail, and the regulating device includes adjusting screw rod, is fixed with link stopper on the adjusting screw rod,
Pull pressure sensor is provided between the block and motor mount.
It is being arranged in this way the utility model has the advantages that using the above scheme, by rotating adjusting screw rod, make motor mount on the slide rail
Sliding, so that more convenient quick adjusting feed belt tightness is capable of detecting when to pass by the way that pull pressure sensor is arranged
Send belt for the level of tightness of live spindle so that load suffered by test bearing is measured, so as to sense according to pressure
Data on device adjust load suffered by test bearing to adjust the elasticity of feed belt with this, keep the experiment more rationally quasi-
Really.
The present invention is further arranged to be fitted with thermometer on the detection seat, and the probe of the thermometer is across fixing sleeve
Be in contact setting with test bearing.
The beneficial effect being arranged in this way is: using the above scheme, thermometer can be real in being sealed property test experience
When test bearing temperature, can stop testing and controlling temperature in time when temperature occurs abnormal, ensure that experiment can
It goes on smoothly.
The detection device that the present invention is further arranged to the detection bearing seal leakproofness further includes having cabinet, described
Medium feeding mechanism and detection seat are arranged in cabinet, and the cabinet correspond to medium feeding mechanism and sets and be respectively provided with seat is detected
There is sliding door.
The beneficial effect being arranged in this way is: using the above scheme, cabinet makes medium feeding mechanism and detection seat at runtime
Can be more stable, and when sealing propertytest tests progress, soundproof effect is preferable, and can be tieed up by opening sliding door
Medium feeding mechanism and detection seat are repaired, it is easy to repair.
The present invention be further arranged to be provided on the side wall of the detection seat for observe in test chamber experiment progress with
The observation panel of state is provided with transparent observing door on the observation panel.
The beneficial effect being arranged in this way is: using the above scheme, can be examined by the more intuitive observation of transparent observing door
Survey intracavitary experiment progress and state.
The present invention is further arranged to be provided with the fixture nut for axially position test suite in the live spindle.
The beneficial effect being arranged in this way is: using the above scheme, leading test suite in rotation by the way that fixture nut is arranged
Axial limiting on axis avoids the sliding and offset of test suite, and ensure that experiment can stablize progress.
Detailed description of the invention
Fig. 1 is the overall structure diagram in the embodiment of the present invention；
Fig. 2 is the diagrammatic cross-section that seat is detected in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram that seat is detected in the embodiment of the present invention；
Fig. 4 is partial cutaway view in the embodiment of the present invention；
Fig. 5 is local structural graph in the embodiment of the present invention；
Fig. 6 is power mechanism schematic diagram in the embodiment of the present invention；
Fig. 7 is cabinet structure schematic diagram in the embodiment of the present invention.
Specific embodiment
The present invention is disclosed by Fig. 1 to Fig. 7, a kind of detection device for detecting bearing seal leakproofness is provided, includes inspection
Seat 1 is surveyed, is provided with test chamber 2 in the detection seat 1, live spindle 3 is equipped in the test chamber 2, and live spindle 3 rotates
It is mounted on detection seat 1, the power mechanism 4 of its rotation of driving is connected in the live spindle 3, it is also solid in the test chamber 2
Surely there is fixing sleeve 21, and fixing sleeve 21 is set in live spindle 3, formed between the fixing sleeve 21 and live spindle 3 useful
In the installation cavity of installation test suite 5, the test suite 5 includes a test bearing 51 and two test sealing elements 52, institute
It states two test sealing elements 52 to set up separately in 51 two sides of test bearing, the detection seat 1 is provided with air pressure detector outside, and air pressure is examined
The air pressure detection probe for surveying instrument is inserted into test sealing element 52, is connected on the detection seat 1 and is passed through ring in its test chamber 2
The medium feeding mechanism 6 of border medium is additionally provided with media outlet 22 in the test chamber 2.Power mechanism 4 makes live spindle 3
Rotation to driving the test bearing 51 in live spindle 3 rotate, make test bearing 51 in sealing propertytest experiment progress at
In rotating under running environment, to make sealing propertytest experiment closer to true environment, and then make detected data
It is more accurate.Detection seat 1 plays fixed supporting role for live spindle 3, while fixing sleeve 21 is arranged, fixing sleeve 21 and rotation
Turn to be formed with the installation cavity for installing fixed test suite 5 between main shaft 3, to make the test bearing 51 in test suite 5
Completion sealing propertytest that can be stable in test chamber 2 with test sealing element 52 is tested, and the detection device can be according to past detection
The difference for the surrounding medium being passed through in chamber 2 tests the sealing performance of sealing element 52 to detect under varying environment, simulated environment compares
Multiplicity ensure that the detection in all directions of sealing property of sealing component, and be detected in test sealing element 52 by air pressure detector
The air pressure in portion should when the air pressure tested in sealing element 52 is identical as external pressure during being sealed property test experience
The leakproofness for testing sealing element 52 is good, on the contrary then leakproofness is not good, which carrys out reaction test sealing element 52
Leakproofness, response data are relatively intuitive more accurate and easy to operate.
Above-mentioned medium feeding mechanism 6 includes air-heater 61 and/or air blower 62 and/or suction pump, is connected on the suction pump
It is connected to water tank 63, the delivery outlet of the air-heater 61, air blower 62 and suction pump is connected with test chamber 2.It is arranged in this way
Beneficial effect be: using the above scheme, when simulation test sealing element 52 is in hot wind environment, the delivery outlet of air-heater 61
It is connected in test chamber 2, test sealing element 52 is under hot wind environment after opening 61 rear chamber of air-heater, is carrying out hot wind experiment
When pass through air pressure detector while testing detect test sealing element 52 in air pressure, when test sealing element 52 in air pressure
It is good with the leakproofness of external pressure test sealing element 52 when identical, it is on the contrary then leakproofness is not good.It is sealed in simulation test
When part 52 is in the sand and dust of field, the delivery outlet of air blower 62 is connected in test chamber 2, and sandy soil are added in 2 body of test chamber,
Opening the unlatching of air blower 62 makes to form sand and dust circulation in cavity, is also required in measurement test sealing element 52 when carrying out sand and dust experiment
Air pressure, principle is identical as hot wind experiment because when external pressure be greater than test 52 air pressure inside of sealing element when bearing outside sand
Dirt can be entered in test bearing 51 by testing sealing element 52.When testing the progress waterproof experiment of sealing element 52, on suction pump
Delivery outlet be connected in test chamber 2, suction pump connect water tank 63 and connect a water jet so that the water in water tank 63 is passed through pumping
Test sealing element 52 of the water pump into test chamber 2 sprays, and the environment of simulation is more various, and replaces medium feeding mechanism 6 when ratio
It is quick and easy, improve detection efficiency.
Triple valve, the first outlet and the return air inlet phase of air-heater 61 of the triple valve are provided on above-mentioned media outlet 22
Connection, second outlet are connected with the return air inlet of air blast, and third outlet is connected with water tank 63.The beneficial effect being arranged in this way
Be: using the above scheme, by being provided with triple valve on media port, different medium feeding mechanisms 6 is inserted on triple valve not
Same outlet forms different enviromental cycles, and this arrangement enhances the suitabilities of media outlet 22 for setting, and save sky
Between.
Above-mentioned power mechanism 4 includes driving motor 41, feed belt 42 and motor mount 43, the live spindle 3
It is sequentially connected by the output end of feed belt 42 and driving motor 41, the driving motor 41 is fixedly mounted on motor mount
On 43, the regulating device for adjusting 42 elasticity of feed belt is provided on the motor mount 43.What is be arranged in this way has
Beneficial effect is: using the above scheme, live spindle 3 is sequentially connected by the output end of feed belt 42 and driving motor 41, is passed
Send belt 42 that can tighten power to live spindle 3 one at runtime, so that making can be to survey when live spindle 3 drives bearing rotary
The inner ring for trying bearing 51 applies a load, in this way the normal operation environment of the better simulation test bearing 51 of energy, and is driving
Feed belt 42 can be adjusted after dynamic 41 long time running of motor when the relaxation of feed belt 42 by regulating device for rotation
The level of tightness of main shaft 3, make feed belt 42 keep tightening for live spindle 3, thus make bearing 51 to be tested persistently by
To the loading force of feed belt 42, so that the sealing property of sealing component for detecting detection device is more accurate, and regulating device
Allow to more convenient and quicker adjusts feed belt 42 for the level of tightness of live spindle 3.
It is connected with bottom plate 7 under above-mentioned detection seat 1, sliding rail 71 is provided on the bottom plate 7, the motor mount 43 slides
It is arranged on sliding rail 71, the regulating device includes adjusting screw rod 44, and block 45 is fixed on the adjusting screw rod 44, described
Pull pressure sensor 46 is provided between block 45 and motor mount 43.It is being arranged in this way the utility model has the advantages that using the above scheme,
By rotating adjusting screw rod 44, slide motor mount 43 on sliding rail 71, so that more convenient quick adjusting transmits skin
42 tightness of band is capable of detecting when that feed belt 42 tightens journey for live spindle 3 by the way that pull pressure sensor 46 is arranged
Degree is to measure load suffered by test bearing 51, so as to adjust transmission skin according to the data in pull pressure sensor 46
Elasticity with 42 adjusts load suffered by test bearing 51 with this, keeps experiment more rationally accurate.
Thermometer 8 is fitted on above-mentioned detection seat 1, the probe 81 of the thermometer 8 passes through fixing sleeve 21 and test bearing
51 are in contact setting.The beneficial effect being arranged in this way is: using the above scheme, thermometer 8 can detect real in being sealed property
The temperature of real-time test bearing 51 when testing can stop testing and controlling temperature in time, ensure that when temperature occurs abnormal
Experiment can be gone on smoothly.
And in order to provide the environment of a relatively closed sound insulation, detection device further includes having cabinet 9, the medium supply dress
It sets 6 to be arranged in cabinet 9 with detection seat 1, the corresponding medium feeding mechanism 6 of the cabinet 9 is provided with detection 1 position of seat to be pushed away
Sliding door 91.The beneficial effect being arranged in this way is: using the above scheme, cabinet 9 is running medium feeding mechanism 6 with detection seat 1
When can be more stable, and sealing propertytest test carry out when soundproof effect it is preferable, and by open sliding door 91
It is easy to repair to repair medium feeding mechanism 6 and detection seat 1.
And be provided on the side wall of above-mentioned detection seat 1 for observing the observation panel 24 for testing progress and state in test chamber 2,
Transparent observing door is provided on the observation panel 24.The beneficial effect being arranged in this way is: using the above scheme, can be by transparent
Observe experiment progress and state in the more intuitive observation test chamber 2 of door.
The fixture nut 31 for axially position test suite 5 is provided in above-mentioned live spindle 3.What is be arranged in this way is beneficial
Effect is: using the above scheme, by setting, fixture nut makes the axial limiting in live spindle 3 of test suite 5, avoids
The sliding and offset of test suite 5, ensure that experiment can stablize progress.
The above embodiments are merely a preferred embodiment of the present invention, and cannot limit interest field of the invention with this, because
This, is still belonged to according to equivalent variations made by scope of the present invention patent, such as using similar technique, the equivalent product of similar structures
The range that the present invention is covered.
Claims (9)
1. a kind of detection device for detecting bearing seal leakproofness, includes detection seat, it is characterised in that: in the detection seat
It is provided with test chamber, live spindle is equipped in the test chamber, and live spindle is rotatably installed on detection seat, the rotation
It is connected with the power mechanism of its rotation of driving on main shaft, is further fixed on fixing sleeve in the test chamber, and fixing sleeve is set in rotation
Turn on main shaft, the installation cavity for installing test suite, the test suite are formed between the fixing sleeve and live spindle
Including a test bearing and two test sealing elements, described two test sealing elements set up separately in test bearing two sides, the inspection
It surveys outside seat and is provided with air pressure detector, and the air pressure detection probe of air pressure detector is inserted into test sealing element, the detection
It is connected with the medium feeding mechanism for being passed through surrounding medium in its test chamber on seat, is additionally provided with medium in the test chamber and goes out
Mouthful.
2. the detection device of detection bearing seal leakproofness according to claim 1, it is characterised in that: the medium supplies
Answering device includes air-heater and/or air blower and/or suction pump, and water tank, the air-heater, air blast are connected on the suction pump
The delivery outlet of machine and suction pump is connected with test chamber.
3. the detection device of detection bearing seal leakproofness according to claim 2, it is characterised in that: the medium goes out
It is provided with triple valve on mouthful, the first outlet of the triple valve is connected with the return air inlet of air-heater, second outlet and air blast
Return air inlet is connected, and third outlet is connected with water tank.
4. the detection device of detection bearing seal leakproofness according to claim 1, it is characterised in that: the engine
Structure includes driving motor, feed belt and motor mount, and the live spindle is defeated by feed belt and driving motor
Outlet transmission connection, the driving motor are fixedly mounted on motor mount, are provided on the motor mount for adjusting
Save the regulating device of feed belt elasticity.
5. the detection device of detection bearing seal leakproofness according to claim 4, it is characterised in that: the detection seat
Under be connected with bottom plate, sliding rail is provided on the bottom plate, the motor mount is slidably arranged on sliding rail, the regulating device
Include adjusting screw rod, link stopper is fixed on the adjusting screw rod, is provided with pressure between the block and motor mount
Sensor.
6. the detection device of detection bearing seal leakproofness according to claim 1 or 2 or 3, it is characterised in that: described
Thermometer is fitted on detection seat, and the probe of the thermometer is in contact setting across fixing sleeve with test bearing.
7. the detection device of detection bearing seal leakproofness according to claim 1, it is characterised in that: further include organic
Cabinet, the medium feeding mechanism and detection seat are arranged in cabinet, and the cabinet corresponds to medium feeding mechanism and detection seat
It sets and is provided with sliding door.
8. the detection device of detection bearing seal leakproofness according to claim 1 or claim 7, it is characterised in that: the inspection
It surveys and is provided on the side wall of seat for observing the observation panel for testing progress and state in test chamber, is provided on the observation panel
Bright observation door.
9. the detection device of detection bearing seal leakproofness according to claim 1, it is characterised in that: the rotation master
The fixture nut for axially position test suite is provided on axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588932.7A CN109632207A (en) | 2018-12-25 | 2018-12-25 | Detect the detection device of bearing seal leakproofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588932.7A CN109632207A (en) | 2018-12-25 | 2018-12-25 | Detect the detection device of bearing seal leakproofness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109632207A true CN109632207A (en) | 2019-04-16 |
Family
ID=66077259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811588932.7A Pending CN109632207A (en) | 2018-12-25 | 2018-12-25 | Detect the detection device of bearing seal leakproofness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109632207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024600A (en) * | 2019-12-28 | 2020-04-17 | 清华大学 | Sealing test device and method for simulating sand and dust erosion environment |
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| JP2005207764A (en) * | 2004-01-20 | 2005-08-04 | Ntn Corp | Seal performance evaluation method for bearing |
| CN102323014A (en) * | 2011-05-30 | 2012-01-18 | 浙江新昌皮尔轴承有限公司 | Bearing sealing performance testing method and die for testing |
| CN103063434A (en) * | 2012-12-28 | 2013-04-24 | 瓦房店轴承集团有限责任公司 | Automobile hub bearing multifunctional testing machine |
| CN203587290U (en) * | 2013-10-24 | 2014-05-07 | 宁波市镇海银球轴承有限公司 | Bearing waterproof performance service life tester |
| WO2016041667A1 (en) * | 2014-09-19 | 2016-03-24 | Hartmut Flaig | Sealing surface correcting device for sealing screws, system, and method |
| CN208206485U (en) * | 2018-05-25 | 2018-12-07 | 宁波益明轴承有限公司 | For detecting the experimental rig of bearing service life |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005207764A (en) * | 2004-01-20 | 2005-08-04 | Ntn Corp | Seal performance evaluation method for bearing |
| CN102323014A (en) * | 2011-05-30 | 2012-01-18 | 浙江新昌皮尔轴承有限公司 | Bearing sealing performance testing method and die for testing |
| CN103063434A (en) * | 2012-12-28 | 2013-04-24 | 瓦房店轴承集团有限责任公司 | Automobile hub bearing multifunctional testing machine |
| CN203587290U (en) * | 2013-10-24 | 2014-05-07 | 宁波市镇海银球轴承有限公司 | Bearing waterproof performance service life tester |
| WO2016041667A1 (en) * | 2014-09-19 | 2016-03-24 | Hartmut Flaig | Sealing surface correcting device for sealing screws, system, and method |
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| CN111024600A (en) * | 2019-12-28 | 2020-04-17 | 清华大学 | Sealing test device and method for simulating sand and dust erosion environment |
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Application publication date: 20190416 |
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