CN109855872A - A kind of general roller bearing testing machine - Google Patents
A kind of general roller bearing testing machine Download PDFInfo
- Publication number
- CN109855872A CN109855872A CN201910234803.6A CN201910234803A CN109855872A CN 109855872 A CN109855872 A CN 109855872A CN 201910234803 A CN201910234803 A CN 201910234803A CN 109855872 A CN109855872 A CN 109855872A
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- main shaft
- shaft
- bearing
- test
- hydraulic cylinder
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Abstract
The present invention relates to a kind of general roller bearing testing machines, belong to bearing test apparatus field, including rack, rotation is provided with main shaft in rack, spacer sleeve is set there are two test bearing on main shaft, bushing is arranged on each test bearing, rack includes support plate, and the card slot for being clamped with support plate is offered on bushing, first hydraulic cylinder is provided in rack, it is provided with axially loaded mechanism in rack, motor is fixedly installed in rack, is connected between connecting shaft and the output shaft of motor by shaft coupling.When needing to test multiple test bearings, lower coupler is unloaded first, the connection between the piston rod and main shaft of the first hydraulic stem is released again, then main shaft is directly sling into disengaging rack together with bushing, bushing is unloaded again, finally test bearing is unloaded, then installs the test bearing that do not test again；It is easy to loading and unloading, the assembly time of test bearing is shortened, improves test efficiency to a certain extent.
Description
Technical field
The present invention relates to bearing test apparatus field, in particular to a kind of general roller bearing testing machine.
Background technique
Roller bearing testing machine needs to complete various technical conditions, for example runs at high speed, is axially loaded, radial loaded, profit
Sliding, Internal and external cycle axial, radial precision positioning etc., this just needs designer during design of technological arrangement,
It can be realized the technical requirements of various test parameters in the limited space of testing machine.
When carrying out Dynamic performance examination, test bearing to be measured is sleeved in supports main shaft, by main shaft with to be measured
Test bearing rotation, meanwhile, by main shaft load pressure axially and radially, and then carry out Dynamic performance examination.Root
According to the testing requirement of different size bearing, different support shaftings is selected to be supported test bearing.And test multiple bearings
When, after to be tested, need to disassemble main shaft from bracket, then replace the bearing of not test (N.T.).
But current testing machine structure is complex, when needing to test multiple test bearings, because cargo handling process is numerous
It is miscellaneous, it is time-consuming and laborious, test efficiency is influenced to a certain extent.
Summary of the invention
The purpose of the present invention is to provide a kind of general roller bearing testing machines, have main shaft easy to loading and unloading, shorten assembly
The advantages of time, raising test efficiency.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of general roller bearing testing machine, including rack, rotation is provided with main shaft, spacer sleeve on the main shaft in the rack
If being arranged with the bushing for being used to support main shaft on each test bearing, the rack includes support plate, institute there are two test bearing
It states the card slot offered on bushing for being clamped with support plate, in the rack and is located at below main shaft and is provided with for master
Axis applies the first hydraulic cylinder of radial pull, and piston rod and the main shaft of first hydraulic cylinder are detachably connected, are located in the rack
One end of main shaft is provided with the axially loaded mechanism for applying axial compressive force to main shaft, is located at the another of main shaft in the rack
End is fixedly installed motor, and the main shaft is sequentially connected with connecting shaft close to one end of motor, the connecting shaft and motor it is defeated
It is connected between shaft by shaft coupling.
Implement above-mentioned technical proposal, when work, starts motor, motor rotation drives connecting shaft and main shaft rotation, then
Radial pull is applied to main shaft by radial loaded mechanism, axial thrust is applied to main shaft by axially loaded mechanism, with into
The Dynamic performance examination of row test bearing；Support plate is inserted into card slot, and card slot and support plate cooperate, and prevents main shaft axially displaced, when
When needing to test multiple test bearings, lower coupler is unloaded first, then releases the company between the piston rod and main shaft of the first hydraulic stem
It connects, main shaft is directly then sling into disengaging rack together with bushing, then bushing is unloaded, finally unloaded test bearing, so
Install the test bearing that do not test again afterwards；It is easy to loading and unloading, the assembly time of test bearing is shortened, is mentioned to a certain extent
High test efficiency.
The present invention is further arranged to: being arranged with stress bearing on the main shaft, is arranged with bearing on the stress bearing
, it is fixedly installed sensor holder on the bearing block, tension sensor, the sensor holder are installed in the sensor holder
On be fixedly connected with connecting rod, the piston rod of the connecting rod one end and first hydraulic cylinder far from main shaft is detachably connected.
Implement above-mentioned technical proposal, when work, start first hydraulic cylinder, the piston rod of first hydraulic cylinder is shunk, and passes through company
Extension bar and stress bearing realize the purpose for applying radial pull to main shaft, because main shaft needs high speed rotation, and leads to when test
Setting stress bearing is crossed, reduces the torque that main shaft passes to connecting rod, prevents connecting rod from damaging, while keeping main shaft rotation more suitable
Freely.
The present invention is further arranged to: the stress bearing is between two test bearings, and stress bearing is respectively to two
Test bearing is equidistant.
Implement above-mentioned technical proposal, test bearing is equally distributed on the both ends of stress bearing, and stress bearing applies main shaft
Radial pulling force can divide equally and pass to test bearing, make two test bearings by equal-sized radial force, improve two examinations
Test the measuring accuracy of bearing.
The present invention is further arranged to: the connecting rod is fixedly installed hinged seat close to one end of first hydraulic cylinder, institute
The piston rod for stating hinged seat and first hydraulic cylinder is hinged.
Implement above-mentioned technical proposal, the piston rod of first hydraulic cylinder is hinged with hinged seat, makes main shaft only by radial drawing
Power, without the active force by other directions.
The present invention is further arranged to: the hinged seat includes two fixed plates, and hinged seat is integrally in П shape, and described first
The piston rod of hydraulic cylinder is inserted in the fixed plate and connect with the piston rod rotation of first hydraulic cylinder between two fixed plates
And it is parallel to the pin shaft of main shaft, one end of the pin shaft is fixedly installed the boss contradicted with the side wall of fixed plate, the pin shaft
One end far from boss is provided with the locating part for limiting pin shaft position.
Implement above-mentioned technical proposal, after pin shaft is installed, the purpose for limiting pin shaft position is realized by locating part, is prevented in work
Pin shaft is detached from fixed plate during work.
The present invention is further arranged to: the one end of the pin shaft far from boss offers limit hole along the radial direction of pin shaft, institute
Stating locating part is the bolt being inserted in limit hole, and the length of bolt is greater than the diameter of pin shaft.
Implement above-mentioned technical proposal, when disassembly, extract bolt, then extract pin shaft again, realize first hydraulic cylinder with
The separation of connecting shaft, easy removal.
The present invention is further arranged to: the upper cover for covering main shaft is detachably provided on the bushing.
Implement above-mentioned technical proposal, the purpose for covering main shaft is played in the setting of upper cover, reduces dust and enters test bearing
In, reduce the influence to the test result of test bearing.
The present invention is further arranged to: the axially loaded mechanism includes second hydraulic cylinder, the piston rod of second hydraulic cylinder
Coaxial with main shaft, the main shaft is provided with bearing cap close to one end of second hydraulic cylinder, and the bearing cap is close to second hydraulic cylinder
Side wall be fixedly installed pressure sensor.
Implement above-mentioned technical proposal, when work, start second hydraulic cylinder, the piston rod of second hydraulic cylinder is protruding with pressure
Force snesor contradicts, and pressure sensor transfers the force to bearing cap, and bearing cap transfers the force to main shaft, realizes to master
Axis applies the purpose of axial load, and pressure sensor can detect that the size of axial load.
The present invention is further arranged to: the shaft coupling is Falk flexible coupling.
Implement above-mentioned technical proposal, Falk flexible coupling transmits torque by serpentine spring piece, allows to have biggish
Installation deviation, make between the output shaft of motor and connecting shaft can there are certain gaps, to compensate the axial movement of main shaft, and snake
Shape spring coupling structure is simple, convenient disassembly, and the efficiency of loading and unloading of main shaft can be improved.
The present invention is further arranged to: the connecting shaft is provided with interconnecting piece close to one end of main shaft, the interconnecting piece with
Test bearing close to connecting shaft contradicts, and the main shaft offers threaded hole close to the end of connecting shaft, opens on the interconnecting piece
Equipped with the mounting hole for being through to threaded hole, rotation is provided with the connection spiral shell for being threadedly coupled with threaded hole in the mounting hole
Bolt is arranged with the outer end cap being fixedly connected with bushing in the connecting shaft.
Implement above-mentioned technical proposal, the connection between connecting shaft and main shaft is realized by connection bolt, convenient for connecting shaft
Disassembly, and be connected firmly, and interconnecting piece and test bearing contradict, and play the purpose for limiting test bearing position, guarantee test axis
Hold the stabilization of position.
In conclusion the present invention having the beneficial effect that in contrast to the prior art
One, support plate is inserted into card slot, and card slot and support plate cooperate, and prevents main shaft axially displaced, when needing to test multiple test axis
When holding, lower coupler is unloaded first, then releases the connection between the piston rod and main shaft of the first hydraulic stem, then directly connects main shaft
It slings disengaging rack together with bushing, then bushing is unloaded, finally unload test bearing, then install the examination that do not test again
Test bearing；It is easy to loading and unloading, the assembly time of test bearing is shortened, improves test efficiency to a certain extent；
Two, when dismantling, after pin shaft is installed, the purpose for limiting pin shaft position is realized by locating part, is prevented in the process of work
Pin shaft is detached from fixed plate；
Three, Falk flexible coupling transmits torque by serpentine spring piece, allows to have biggish installation deviation, makes the defeated of motor
Can be there are certain gap between shaft and connecting shaft, to compensate the axial movement of main shaft, and Falk flexible coupling structure is simple
Single, the efficiency of loading and unloading of main shaft can be improved in convenient disassembly.
Detailed description of the invention
Fig. 1 is whole structural schematic diagram of the invention；
Fig. 2 is the portion the A enlarged drawing in Fig. 1；
Fig. 3 is the portion the B enlarged drawing in Fig. 1.
Appended drawing reference: 1, rack；11, support plate；12, first hydraulic cylinder；13, motor；131, connecting shaft；1311, shaft coupling
Device；1312, outer end cap；132, encoder；2, main shaft；21, bearing cap；211, pressure sensor；22, threaded hole；3, bushing；
31, card slot；41, second hydraulic cylinder；5, bearing block；51, stress bearing；52, sensor holder；53, connecting rod；6, hinged seat；61,
Fixed plate；7, pin shaft；71, boss；72, limit hole；721, bolt；8, upper cover；9, interconnecting piece；91, mounting hole；911, spiral shell is connected
Bolt.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
As shown in Figure 1, a kind of general roller bearing testing machine, including rack 1, rotation is provided with main shaft 2 in rack 1, main
Spacer sleeve is set there are two test bearing on axis 2, and two test bearings are separately positioned on the both ends of main shaft 2, on each test bearing
It is arranged with the bushing 3 for being used to support main shaft 2, bushing 3 is annular, is made of 42CrMo.
As shown in Figure 1, being detachably provided with the upper cover 8 for covering main shaft 2 on bushing 3, upper cover 8 passes through fixing bolt
(not indicating in figure) connect with the top of bushing 3, the setting of upper cover 8, plays the purpose for covering main shaft 2, reduces dust and enters
In test bearing, reduce the influence to the test result of test bearing.
As shown in Figure 1, rack 1 includes support plate 11, support plate 11 is vertically arranged two, offered on bushing 3 for
The card slot 31 that support plate 11 is clamped, the thickness of the width support plate 11 of card slot 31 is adapted, to limit the axial movement of bushing 3.
As shown in Figure 1, the axial direction that one end in rack 1 positioned at main shaft 2 is provided with for applying axial compressive force to main shaft 2 adds
Mounted mechanism, axially loaded mechanism include second hydraulic cylinder 41, and the piston rod and main shaft 2 of second hydraulic cylinder 41 are coaxial, and main shaft 2 is close
One end of second hydraulic cylinder 41 is provided with bearing cap 21, and bearing cap 21 is fixedly installed pressure close to the side wall of second hydraulic cylinder 41
Sensor 211.
When work, start second hydraulic cylinder 41, the piston rod of second hydraulic cylinder 41 is protruding to be supported with pressure sensor 211
Touching, pressure sensor 211 transfer the force to bearing cap 21, and bearing cap 21 transfers the force to main shaft 2, realize to main shaft
2 apply the purpose of axial load, and pressure sensor 211 can detect that the size of axial load.
As shown in Figure 1, the other end in rack 1 positioned at main shaft 2 is fixedly installed motor 13, main shaft 2 is close to motor 13
One end is sequentially connected with connecting shaft 131, and the output shaft of motor 13 is provided with encoder 132 far from one end of main shaft 2, in order to survey
Measure the revolving speed of motor 13.
As shown in Figure 1, being connected between connecting shaft 131 and the output shaft of motor 13 by shaft coupling 1311, shaft coupling 1311
For Falk flexible coupling；Falk flexible coupling transmits torque by serpentine spring piece, allows to have biggish installation deviation,
Make between the output shaft of motor 13 and connecting shaft 131 can there are certain gaps, to compensate the axial movement of main shaft 2, and snakelike
Spring coupling structure is simple, convenient disassembly, and the efficiency of loading and unloading of main shaft 2 can be improved.
As shown in Figure 1, 2, in rack 1 and it is located at the lower section of main shaft 2 and is provided with for applying the of radial pull to main shaft 2
One hydraulic cylinder 12, piston rod and the main shaft 2 of first hydraulic cylinder 12 are detachably connected, and stress bearing 51, stress are arranged on main shaft 2
Bearing 51 is between two test bearings, and being equidistant to two test bearings respectively of stress bearing 51；Test bearing is equidistant
The both ends of stress bearing 51 are distributed in, stress bearing 51, which can divide equally the radial pulling force that main shaft 2 applies, passes to test bearing,
Make two test bearings by equal-sized radial force, improves the measuring accuracy of two test bearings.
As shown in Figure 1, 2, it is arranged with bearing block 5 on stress bearing 51, sensor holder 52 is fixedly installed on bearing block 5,
It is equipped in sensor holder 52 tension sensor (not indicated in figure), connecting rod 53 is fixedly connected on sensor holder 52, connected
The one end of bar 53 far from main shaft 2 and the piston rod of first hydraulic cylinder 12 are detachably connected.
When work, start first hydraulic cylinder 12, the piston rod of first hydraulic cylinder 12 is shunk, and passes through connecting rod 53 and stress
Bearing 51 realizes the purpose for applying radial pull to main shaft 2 because main shaft 2 needs high speed rotation when test, and by setting by
Power bearing 51 reduces the torque that main shaft 2 passes to connecting rod 53, prevents connecting rod 53 from damaging, while keeping the rotation of main shaft 2 more suitable
Freely.
Wherein, as shown in Figure 1,3, connecting rod 53 is fixedly installed hinged seat 6 close to one end of first hydraulic cylinder 12, hingedly
Seat is 6 hinged with the piston rod of first hydraulic cylinder 12, and hinged seat 6 includes two fixed plates 61, and hinged seat 6 is whole in П shape, and first
The piston rod of hydraulic cylinder 12 is inserted with the piston rod rotation with first hydraulic cylinder 12 between two fixed plates 61 in fixed plate 61
Connect and be parallel to the pin shaft 7 of main shaft 2.
As shown in Figure 1,3, one end of pin shaft 7 is fixedly installed the boss 71 contradicted with the side wall of fixed plate 61, and pin shaft 7 is remote
One end from boss 71 is provided with the locating part for limiting 7 position of pin shaft, and the one end of pin shaft 7 far from boss 71 is along pin shaft 7
Radial direction offers limit hole 72, and locating part is the bolt 721 being inserted in limit hole 72, and the top of bolt 721 is provided with knob,
The length of bolt 721 is greater than the diameter of pin shaft 7.
After pin shaft 7 is installed, the purpose for limiting 7 position of pin shaft is realized by locating part, prevents pin shaft 7 in the process of work
It is detached from fixed plate 61；And when dismantling, extract bolt 721, then extract pin shaft 7 again, realize first hydraulic cylinder 12 with connect
The separation of axis 131, easy removal.
In addition, as shown in Figure 1, 2, connecting shaft 131 is provided with interconnecting piece 9 close to one end of main shaft 2, interconnecting piece 9 with it is close
The test bearing of connecting shaft 131 contradicts, and main shaft 2 offers threaded hole 22 close to the end of connecting shaft 131, opens up on interconnecting piece 9
There is the mounting hole 91 for being through to threaded hole 22, rotation is provided with the connection spiral shell for being threadedly coupled with threaded hole 22 in mounting hole 91
Bolt 911 is arranged with the outer end cap 1312 being fixedly connected with bushing 3 in connecting shaft 131.
Specific work process: when work, starting motor 13, and the rotation of motor 13 drives connecting shaft 131 and main shaft 2 to rotate,
Then radial pull is applied to main shaft 2 by radial loaded mechanism, axial push away is applied to main shaft 2 by axially loaded mechanism
Power, to carry out the Dynamic performance examination of test bearing；Support plate 11 is inserted into card slot 31, and card slot 31 and support plate 11 cooperate, prevent
Main shaft 2 is axially displaced, when needing to test multiple test bearings, unloads lower coupler 1311 first, then release the first hydraulic stem
Then main shaft 2 is directly sling together with bushing 3 and is detached from rack 1, then bushing 3 is unloaded by the connection between piston rod and main shaft 2
Under, finally test bearing is unloaded, then installs the test bearing that do not test again；It is easy to loading and unloading, shorten test axis
The assembly time held, effectively improves test efficiency.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of general roller bearing testing machine, including rack (1), it is characterised in that: rotation is provided with master on the rack (1)
Axis (2), spacer sleeve is set there are two test bearing on the main shaft (2), is arranged on each test bearing and is used to support main shaft (2)
Bushing (3), the rack (1) includes support plate (11), is offered on the bushing (3) for being clamped with support plate (11)
Card slot (31) on the rack (1) and is located at and is provided with below main shaft (2) for applying the of radial pull to main shaft (2)
One hydraulic cylinder (12), piston rod and the main shaft (2) of first hydraulic cylinder (12) are detachably connected, and main shaft is located on the rack (1)
(2) one end is provided with the axially loaded mechanism for main shaft (2) to be applied with axial compressive force, is located at main shaft on the rack (1)
(2) the other end is fixedly installed motor (13), and the main shaft (2) is sequentially connected with connecting shaft close to the one end of motor (13)
(131), it is connect between the connecting shaft (131) and the output shaft of motor (13) by shaft coupling (1311).
2. a kind of general roller bearing testing machine according to claim 1, it is characterised in that: be arranged on the main shaft (2)
Have stress bearing (51), be arranged with bearing block (5) on the stress bearing (51), is fixedly installed biography on the bearing block (5)
Sensor seat (52), the sensor holder (52) is interior to be equipped with tension sensor, the company of being fixedly connected on the sensor holder (52)
The piston rod of extension bar (53), the connecting rod (53) one end and first hydraulic cylinder (12) far from main shaft (2) is detachably connected.
3. a kind of general roller bearing testing machine according to claim 2, it is characterised in that: stress bearing (51) position
Between two test bearings, and stress bearing (51) being equidistant to two test bearings respectively.
4. a kind of general roller bearing testing machine according to claim 3, it is characterised in that: the connecting rod (53) is close
One end of first hydraulic cylinder (12) is fixedly installed hinged seat (6), the piston rod of the hinged seat (6) and first hydraulic cylinder (12)
Hingedly.
5. a kind of general roller bearing testing machine according to claim 4, it is characterised in that: the hinged seat (6) includes
Two fixed plates (61), and hinged seat (6) is integrally in П shape, the piston rod of the first hydraulic cylinder (12) is located at two fixed plates (61)
Between, it is inserted on the fixed plate (61) and main shaft (2) is connect and be parallel to the piston rod rotation of first hydraulic cylinder (12)
Pin shaft (7), one end of the pin shaft (7) are fixedly installed the boss (71) contradicted with the side wall of fixed plate (61), the pin shaft
(7) one end far from boss (71) is provided with the locating part for limiting pin shaft (7) position.
6. a kind of general roller bearing testing machine according to claim 5, it is characterised in that: the pin shaft (7) is far from convex
One end of platform (71) offers limit hole (72) along the radial direction of pin shaft (7), and the locating part is to be inserted in limit hole (72)
Bolt (721), the length of bolt (721) are greater than the diameter of pin shaft (7).
7. a kind of general roller bearing testing machine according to claim 1 or 6, it is characterised in that: can on the bushing (3)
Disassembly is provided with the upper cover (8) for covering main shaft (2).
8. a kind of general roller bearing testing machine according to claim 1, it is characterised in that: the axially loaded mechanism packet
It includes second hydraulic cylinder (41), coaxially, the main shaft (2) is hydraulic close to second for the piston rod of second hydraulic cylinder (41) and main shaft (2)
One end of cylinder (41) is provided with bearing cap (21), and side wall of the bearing cap (21) close to second hydraulic cylinder (41) is fixedly installed
Pressure sensor (211).
9. a kind of general roller bearing testing machine according to claim 1, it is characterised in that: the shaft coupling (1311) is
Falk flexible coupling.
10. a kind of general roller bearing testing machine according to claim 1, it is characterised in that: the connecting shaft (131) is leaned on
One end of nearly main shaft (2) is provided with interconnecting piece (9), and the interconnecting piece (9) and the test bearing close to connecting shaft (131) contradict,
The main shaft (2) offers threaded hole (22) close to the end of connecting shaft (131), offers and is through on the interconnecting piece (9)
The mounting hole (91) of threaded hole (22), the interior rotation of the mounting hole (91) are provided with the company for being threadedly coupled with threaded hole (22)
Connecting bolt (911) is arranged with the outer end cap (1312) being fixedly connected with bushing (3) on the connecting shaft (131).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234803.6A CN109855872A (en) | 2019-03-26 | 2019-03-26 | A kind of general roller bearing testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234803.6A CN109855872A (en) | 2019-03-26 | 2019-03-26 | A kind of general roller bearing testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109855872A true CN109855872A (en) | 2019-06-07 |
Family
ID=66902005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910234803.6A Withdrawn CN109855872A (en) | 2019-03-26 | 2019-03-26 | A kind of general roller bearing testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109855872A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879516A (en) * | 2020-08-26 | 2020-11-03 | 丽水学院 | Automatic detection device for bearing roller and use method |
| CN111999058A (en) * | 2020-08-26 | 2020-11-27 | 丽水学院 | Bearing roller detection dismounting device and use method |
| CN112014105A (en) * | 2020-08-26 | 2020-12-01 | 丽水学院 | Bearing roller detection and installation device and use method |
| CN113776833A (en) * | 2021-11-11 | 2021-12-10 | 山东海声音科教仪器有限公司 | Equipment for bearing test |
| CN114076677A (en) * | 2021-11-29 | 2022-02-22 | 中国航发哈尔滨轴承有限公司 | Bearing tester shafting structure |
-
2019
- 2019-03-26 CN CN201910234803.6A patent/CN109855872A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879516A (en) * | 2020-08-26 | 2020-11-03 | 丽水学院 | Automatic detection device for bearing roller and use method |
| CN111999058A (en) * | 2020-08-26 | 2020-11-27 | 丽水学院 | Bearing roller detection dismounting device and use method |
| CN112014105A (en) * | 2020-08-26 | 2020-12-01 | 丽水学院 | Bearing roller detection and installation device and use method |
| CN112014105B (en) * | 2020-08-26 | 2021-11-23 | 丽水学院 | Bearing roller detection and installation device and use method |
| CN111999058B (en) * | 2020-08-26 | 2022-01-28 | 丽水学院 | Bearing roller detection dismounting device and use method |
| CN111879516B (en) * | 2020-08-26 | 2022-01-28 | 丽水学院 | Automatic detection device for bearing roller and use method |
| CN113776833A (en) * | 2021-11-11 | 2021-12-10 | 山东海声音科教仪器有限公司 | Equipment for bearing test |
| CN114076677A (en) * | 2021-11-29 | 2022-02-22 | 中国航发哈尔滨轴承有限公司 | Bearing tester shafting structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190607 |
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| WW01 | Invention patent application withdrawn after publication |