CN109540556A - A kind of even rouge experimental rig of face contact type wheel set bearing and its test method - Google Patents
A kind of even rouge experimental rig of face contact type wheel set bearing and its test method Download PDFInfo
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- CN109540556A CN109540556A CN201811646229.7A CN201811646229A CN109540556A CN 109540556 A CN109540556 A CN 109540556A CN 201811646229 A CN201811646229 A CN 201811646229A CN 109540556 A CN109540556 A CN 109540556A
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- bearing
- bearing shell
- face contact
- wheel set
- test
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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
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
- G01M17/10—Suspensions, axles or wheels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
Abstract
The invention discloses a kind of even rouge experimental rig of face contact type wheel set bearing and its test method, experimental rig includes crossbeam 1, two root posts 2, pedestal 3, controls a pair of of the drive shaft being symmetrically set, the motor 8 with driving axis connection；Crossbeam 1 includes crossbeam cabinet 4, and the inside of crossbeam cabinet 4 is symmetrical set two hold-down devices；Column 2 includes column cabinet 7, and drive shaft includes main shaft 9 and bearing connector 10, and the middle part of column cabinet 7 is arranged in drive shaft, and 8 output shaft of motor is connect with main shaft 9, and 9 output end of main shaft is connect with bearing connector 10；Bearing connector 10 by way of face contact with the obvolvent of wheel set bearing outer ring.The present invention also provides preparation, workpiece loading, starting test, the test of even rouge, off-test and workpiece 6 steps of unloading, the present invention even rouge by the way of driving bearing outer ring rotation before the test method of the device, including experiment, it can load, rotary inertia is small, small power consumption, tests process safety.
Description
Technical field
The invention belongs to vehicle wheels to experimental rig field, and in particular to a kind of even rouge test dress of face contact type wheel set bearing
It sets and its test method.
Background technique
High-speed rail and motor train unit wheel are being infused in bearing replacing operation, needing to inject it suitable lubricant grease, new bearing
It is necessary there are also even rouge process together after rouge, press fitting sealing ring, because lubricating grease is in sealing axis after sealing bearing grease injection
It is non-uniform for holding inside, if even rouge not in time, will affect sealing bearing deposits rouge and vibrating noise performance.To make bearing
Effectively lubricating ensures EMU operational safety, the advanced wheel for repairing replacement bearing to even rouge running-in need to be carried out, make bearing roller and
One layer of uniform oil film is formed on the surface of Internal and external cycle, otherwise bearing is easy to happen failure and fails, and bearing fault will cause vehicle
Hot axis cuts axis and brings serious accident.
Each Railway Bureau's MTU depot fixes axle box using wheel at present, and the mode of friction-driven wheel rotation carries out even rouge race
Conjunction, 205184152 U of utility model patent CN of authorization in such as on April 27th, 2016 are exactly to pass through friction using the even rouge wheel of rotation
Outer ring rotating of the power with dynamic bearing is to realize the even rouge of bearing, but such mode cannot apply radial force to bearing.Or it adopts
With fixing bearing outer ring, the mode of entire wheel pair is rotated, " wheel is to axle box by the CN207114181U as disclosed on March 16th, 2018
Device engaging experimental bench ", the even rouge mode of the device is swivel bearing inner ring, is recorded according to specification the 76th, this mode highest
Speed can only achieve 400rpm.So existing experimental rig is there are energy consumption height, safety is poor, even rouge running-in speed is limited, no
Can load, the problems such as low efficiency and even rouge effect are undesirable, cause the wheel after even rouge running-in to also needing to carry out sky on the line
Vehicle running-in experiment, not only occupies route, but also occupy EMU, waste of energy and at high cost.Therefore need to improve even rouge
Running test device meets wheel qualified after the even even rouge running-in of rouge running test device to can directly run, saves route
Operation test can substantially reduce cost, energy saving.
Summary of the invention
It is an object of the present invention to provide a kind of even rouge experimental rig of face contact type wheel set bearing and its test methods, existing to solve
Have in technology energy consumption is high, safety is poor, even rouge running-in speed slowly, cannot load, the problems such as low efficiency and even rouge effect are undesirable.
It include: crossbeam 1, two root posts 2, pedestal the present invention provides a kind of even rouge experimental rig of face contact type wheel set bearing
3, the motor 8 of left and right is symmetrically set a pair of of drive shaft and driving axis connection.
Crossbeam 1 includes crossbeam cabinet 4, and the inside of crossbeam cabinet 4 is symmetrical set two hold-down devices；
Column 2 includes column cabinet 7, and drive shaft includes main shaft 9 and bearing connector 10, and column cabinet 7 is arranged in drive shaft
Middle part, 8 output shaft of motor are connect with main shaft 9, and 9 output end of main shaft is connect with bearing connector 10；Bearing connector 10 passes through face
The mode and the obvolvent of wheel set bearing outer ring of contact；
3 surface both ends of pedestal are equipped with column cabinet 7 vertically, and 7 top of column cabinet and crossbeam cabinet 4 link into an integrated entity.
Further, hold-down devices include oil cylinder 5 and lower pressing claw 6, and the upper end of oil cylinder 5 is hinged in crossbeam cabinet 4, oil cylinder
Piston is equipped in 5, piston top resists the top of lower pressing claw 6, lower pressing claw 6 is moved up and down under piston driving；In order to
Preferably adjustment position, 6 or so the amplitude of oscillation of lower pressing claw are 5 degree, convenient for the adjustment of position during pushing.
Further, drive shaft can move left and right 100mm along axial direction in column cabinet 7, enable bearing connector 10
It is enough to be moved within the scope of 100mm, convenient for better adapt to different length to measuring wheel pair.
Further, bearing connector 10 is by ontology 101, the first bearing shell 102 and the second bearing shell 103 composition, the first bearing shell
102 and 103 inner surface of the second bearing shell be semicircle cambered surface, the ontology 101 and the first bearing shell 102 are structure as a whole, the second axis
Watts 103 are linked into an integrated entity by fixed device and the first bearing shell 102, are combined into hollow circular cylindrical cavity 105, for accommodate to
Survey bearing, concentricity≤0.05mm of left and right bearing connector 10, circularity≤0.04mm of cavity 105.
Further, fixed device is that pivot structure is arranged with 103 one end of the second bearing shell in the first bearing shell 102 to connect, separately
Pin hole is arranged in outer one end, is connected by pin.
Further, fixed device is that screw hole is all arranged in the first bearing shell 102 and 103 both ends of the second bearing shell, passes through screw
Connection.
Further, the first bearing shell 102 and 103 back of the second bearing shell are equipped with fin 104, the gap between fin 104
Heat dissipation channel is constituted, material has not only been saved, has reduced self weight, and played better heat dissipation effect, killed two birds with one stone.
It further, further include the lifting platform 11 being arranged among pedestal 3, the lifting platform 11 includes elevating mechanism 1101
With platform 1102, elevating mechanism 1101 can be using mechanical such as screw rod, screw rod or pneumatic, hydraulic equiprobable mode.
Further, 1102 the right and left of platform is symmetrical arranged guide rail 1103, is equipped with appropriateness in the interposition of guide rail 1103
Groove can fall into groove when taking turns to rolling into and stop among guide rail 1103, play the function of coarse positioning, decline is flat at this time
Platform 1102 can just make wheel to falling into bearing connector 10.1103 cross section size of guide rail is consistent with common rail, makes
It obtains in same level, can directly dock rail；The distance between guide rail 1103 can also be according between the rail of docking
Distance is adjusted, and in order to dock various sizes of rail, is really realized to survey and be used, quick and convenient.
In order to implement, the present invention also provides a kind of test method of the even rouge experimental rig of face contact type wheel set bearing, packets
A kind of even rouge experimental rig of face contact type wheel set bearing is included, steps are as follows:
S1 prepares before testing: turning on the switch, and main shaft 9 orients so that first bearing shell 102 is opening up in bearing connector 10 is in
The second bearing shell 103 is opened in horizontal position, and control elevating mechanism 11 rises, until the guide rail 1102 and external mark on platform 1101
Quasi- rail flushes；
S2, workpiece load: wheel to be tested is pushed on the guide rail of platform 11 in parallel to by standard rail；Control elevating mechanism 11
Decline, so that wheel set bearing just drops into the first bearing shell 102；The second bearing shell 103 is covered, and the second bearing shell 103 is fixed
On the ontology 101 of bearing connector 10；Subsequent oil cylinder 5 acts, piston downlink, until lower pressing claw 6 compresses tyre tread, by wheel to solid
It is fixed, and persistently to entire wheel to and bearing apply radial force, this radial force can be adjusted according to different wheel-type；
Starting test: S3 inputs wheel to be tested to information such as spindle-type, axis numbers in PLC controller man-machine interface；Starting, automatically
Test；
S4, even rouge test: PLC controls transducer drive motor 8, drives main shaft 9, bearing connector 10 and wheel set bearing outer ring
Rotation carries out even rouge, carries out the acceleration under different rotating speeds, operation, deceleration or stops sequence of maneuvers；
S5, off-test: after completing test operation step, closing motor 8, so that main shaft 9 is automatically stopped, prints test report；
S6, workpiece unloading: the movement of oil cylinder 5 retracts piston, so that lower pressing claw 6 leaves tyre tread；Main shaft 9 orients so that bearing connector
First bearing shell 102 is opening up on 10 is in a horizontal position, and opens the second bearing shell 103, is lifted elevating mechanism 11, so that test wheel
To the first bearing shell 102 is left, elevating mechanism 11 is adjusted, flushes the guide rail 1102 on platform 1101 with standard rail, releases examination
Test wheel pair.
The present invention is even by carrying out by the way of face contact with the mode of wheel set bearing outer ring obvolvent using bearing connector 10
Rouge operation, bearing capacity is bigger, reaches 107.8KN.
The present invention directly drives bearing outer ring rotation, and rotary inertia is small, and Overall Power Consumption is small, energy conservation, even rouge runing condensation procedure peace
Entirely；Qualified wheel is to can direct online operation after the even rouge running-in of apparatus of the present invention.
Concentricity≤0.05mm of present invention or so bearing connector 10, circularity≤0.04mm of cavity 105 are safe, steady
Fixed, even rouge running-in maximum speed can reach EMU and high-speed rail overall trip speed, and automatic hydraulic loads, even rouge running-in effect is good,
It is high-efficient, meet current growing high-speed rail wheel set bearing replacement and requires.
The revolving speed of motor 8 of the present invention can be regulated and controled using frequency converter, so that the revolving speed of even rouge is controlled, so that the even rouge of bearing
Revolving speed is adjustable in the range of 0-2200rpm, it is ensured that the even rouge speed of bearing and the speed under bearing actual condition are coincide.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the even rouge experimental rig of face contact type wheel set bearing of the present invention.
Fig. 2 is 103 opening state lower pillar stand cabinet 7 of the second bearing shell and drive shaft structural schematic diagram of the invention.
Fig. 3 is the structural schematic diagram that the second bearing shell 103 of the invention closes state lower pillar stand cabinet 7 and drive shaft.
Fig. 4 is a kind of work flow diagram of the even rouge test method of face contact type wheel set bearing of the present invention.
Description of symbols: 1, crossbeam, 2, column, 3, pedestal, 4, crossbeam cabinet, 5, oil cylinder, 6, lower pressing claw, 7, column case
Body, 8, motor, 9, main shaft, 10, bearing connector, 101, ontology, the 102, first bearing shell, the 103, second bearing shell, 104, fin,
105, cavity, 11, lifting platform, 1101, elevating mechanism, 1102, platform, 1103, guide rail.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1-3, the even rouge experimental rig of one of the present embodiment face contact type wheel set bearing, comprising:
The motor 8 of a pair of of drive shaft and driving axis connection that crossbeam 1, two root posts 2, pedestal 3, left and right are symmetrically set.
Crossbeam 1 includes crossbeam cabinet 4, and the inside of crossbeam cabinet 4 is symmetrical set two hold-down devices；
Column 2 includes column cabinet 7, and drive shaft includes main shaft 9 and bearing connector 10, and column cabinet 7 is arranged in drive shaft
Middle part, 8 output shaft of motor are connect with main shaft 9, and 9 output end of main shaft is connect with bearing connector 10；Bearing connector 10 passes through face
The mode and the obvolvent of wheel set bearing outer ring of contact；
3 surface both ends of pedestal are equipped with column cabinet 7 vertically, and 7 top of column cabinet and crossbeam cabinet 4 link into an integrated entity.
Preferably, hold-down devices include oil cylinder 5 and lower pressing claw 6, and the upper end of oil cylinder 5 is hinged in crossbeam cabinet 4, oil cylinder 5
Interior to be equipped with piston, piston top resists the top of lower pressing claw 6, lower pressing claw 6 is moved up and down under piston driving；In order to more
Good adjustment position, lower pressing claw 6 can also swing 5 degree.
Preferably, drive shaft can move left and right 100mm along axial direction in column cabinet 7, enable bearing connector 10
It is moved within the scope of 100mm, convenient for better adapting to the opinion pair to be measured of different length.
Preferably, bearing connector 10 is by ontology 101, the first bearing shell 102 and the second bearing shell 103 composition, the first bearing shell 102
It is semicircle cambered surface with 103 inner surface of the second bearing shell, the ontology 101 and the first bearing shell 102 are structure as a whole, the second bearing shell
103 are linked into an integrated entity by fixed device and the first bearing shell 102, are combined into hollow circular cylindrical cavity 105, to be measured for accommodating
Bearing, concentricity≤0.05mm of left and right bearing connector 10, circularity≤0.04mm of cavity 105.
Preferably, fixed device is that pivot structure is arranged with 103 one end of the second bearing shell in the first bearing shell 102 to connect, in addition
Pin hole is arranged in one end, is connected by pin.
Preferably, fixed device is that screw hole is all arranged in the first bearing shell 102 and 103 both ends of the second bearing shell, is connected by bolt
It connects.
Preferably, the first bearing shell 102 and 103 back of the second bearing shell are equipped with fin 104, the gap structure between fin 104
At heat dissipation channel, material has not only been saved, has reduced self weight, and has played better heat dissipation effect, has been killed two birds with one stone.
It preferably, further include the lifting platform 11 of setting on the base 3, lifting platform 11 includes elevating mechanism 1101 and platform
1102, elevating mechanism 1101 can be using mechanical such as screw rod, screw rod or pneumatic, hydraulic equiprobable mode.
Preferably, 1102 the right and left of platform is symmetrical arranged guide rail 1103, is equipped in the interposition of guide rail 1103 appropriate
Groove can fall into groove and stop among guide rail 1103, play the function of coarse positioning, decline platform at this time when taking turns to rolling into
1102 can just make wheel to falling into bearing connector 10.1103 cross section size of guide rail is consistent with common rail, so that
In same level, rail can be directly docked；The distance between guide rail 1103 can also according between the rail of docking away from
From being adjusted, in order to dock various sizes of rail, really realizes to survey and use, it is quick and convenient.
As shown in figure 4, the present invention also provides a kind of even rouge examinations of face contact type wheel set bearing for the ease of the implementation of device
The test method of experiment device, including a kind of even rouge experimental rig of face contact type wheel set bearing, steps are as follows:
S1 prepares before testing: turning on the switch, and main shaft 9 orients so that first bearing shell 102 is opening up in bearing connector 10 is in
The second bearing shell 103, the control rising of elevating mechanism 11 are opened in horizontal position, until the guide rail 1102 and external mark on platform 1101
Quasi- rail flushes；
S2, workpiece load: wheel to be tested is pushed on the guide rail of platform 11 in parallel to by standard rail；Control elevating mechanism 11
Decline, so that wheel set bearing just drops into the first bearing shell 102；The second bearing shell 103 is covered, and the second bearing shell 103 is fixed
On the ontology 101 of bearing connector 10；Subsequent oil cylinder 5 acts, piston downlink, until lower pressing claw 6 compresses tyre tread, by wheel to solid
It is fixed, and persistently to entire wheel to and bearing apply radial force, this radial force can be adjusted according to different wheel-type；
Starting test: S3 inputs wheel to be tested to information such as spindle-type, axis numbers in PLC controller man-machine interface；Starting, automatically
Test；
S4, even rouge test: PLC controls transducer drive motor 8, drives main shaft 9, bearing connector 10 and wheel set bearing outer ring
Rotation carries out even rouge, carries out the acceleration under different rotating speeds, operation, deceleration or stops sequence of maneuvers；
S5, off-test: after completing test operation step, closing motor 8, so that main shaft 9 is automatically stopped, prints test report；
S6, workpiece unloading: the movement of oil cylinder 5 retracts piston, so that lower pressing claw 6 leaves tyre tread；Main shaft 9 orients so that bearing connector
First bearing shell 102 is opening up on 10 is in a horizontal position, and opens the second bearing shell 103, is lifted elevating mechanism 11, so that test wheel
To the first bearing shell 102 is left, elevating mechanism 11 is adjusted, flushes the guide rail 1102 on platform 1101 with standard rail, releases examination
Test wheel pair.
Specific control flow is the present invention at work: by experiment control system man-machine interface input control signal,
It controls signal and industrial personal computer is input to by software interface, after industrial personal computer receives control instruction, the control flow that will edit in advance
It is input to PLC by TCP/IP communication, PLC is communicated by EtherCAT and control signal is input in frequency converter, and frequency converter is defeated
Voltage is to motor 8 out, so that 8 driving spindle 9 of motor rotates.It is equipped with temperature sensor in motor 8, is input to by shielded cable
Frequency converter, encoder is also had in motor 8, and code device signal is input in PLC by private cable.Left and right temperature sensor letter
It number is input in PLC by private cable.PLC collects all input signals, and analysis processing passes through the signal that processing is completed
TCP/IP communication is input in industrial personal computer, is then shown in man-machine interface by software interface.
The invention is not limited to above-mentioned specific embodiment, those skilled in the art can also make a variety of variations accordingly,
The especially material of ontology 101, the first bearing shell 102 and the second bearing shell 103, consolidating between the first bearing shell 102 and the second bearing shell 103
Determine device, the structure of fin 104, the structure type etc. of elevating mechanism 1101, but it is any with equivalent or similar change of the invention
Change should all be covered within the scope of the claims.
Claims (10)
1. a kind of even rouge experimental rig of face contact type wheel set bearing characterized by comprising crossbeam (1), two root posts (2), bottom
The motor (8) of a pair of of drive shaft and the driving axis connection that seat (3), left and right are symmetrically set；
The crossbeam (1) includes crossbeam cabinet (4), is symmetrical set two hold-down devices on the inside of the crossbeam cabinet (4)；
The column (2) includes column cabinet (7), and the drive shaft includes main shaft (9) and bearing connector (10), the driving
Axis is arranged at the middle part of column cabinet (7), and motor (8) output shaft is connect with main shaft (9), and main shaft (9) output end is connect with bearing
Device (10) connection；Bearing connector (10) by way of face contact with the obvolvent of wheel set bearing outer ring；
Pedestal (3) surface both ends are equipped with column cabinet (7) vertically, and at the top of column cabinet (7) and crossbeam cabinet (4) connect into one
Body.
2. the even rouge experimental rig of a kind of face contact type wheel set bearing according to claim 1, it is characterised in that: hold-down devices
Including oil cylinder (5) and lower pressing claw (6), the upper end of the oil cylinder (5) is hinged in crossbeam cabinet (4), is equipped in the oil cylinder (5)
Piston, piston top resist the top of lower pressing claw (6), so that lower pressing claw (6) moves up and down under piston driving.
3. the even rouge experimental rig of a kind of face contact type wheel set bearing according to claim 1, it is characterised in that: the driving
It is 100mm that axis, which moves left and right distance along axial direction in the column cabinet (7),.
4. the even rouge experimental rig of a kind of face contact type wheel set bearing according to claim 1, it is characterised in that: bearing connection
Device (10) is by ontology (101), the first bearing shell (102) and the second bearing shell (103) composition, the first bearing shell (102) and the second bearing shell
(103) inner surface is semicircle cambered surface, and the ontology (101) and the first bearing shell (102) are structure as a whole, the second bearing shell (103)
It is linked into an integrated entity by fixed device and the first bearing shell (102), is combined into hollow circular cylindrical cavity (105).
5. the even rouge experimental rig of a kind of face contact type wheel set bearing according to claim 4, it is characterised in that: the fixation
Device is that pivot structure is arranged with the second bearing shell (103) one end in the first bearing shell (102) to connect, and pin hole is arranged in other end, leads to
Cross pin connection.
6. the even rouge experimental rig of a kind of face contact type wheel set bearing according to claim 4, it is characterised in that: the fixation
Device is that screw hole is all arranged in the first bearing shell (102) and the second bearing shell (103) both ends, is bolted.
7. according to a kind of described in any item even rouge experimental rigs of face contact type wheel set bearing of claim 4-6, it is characterised in that:
First bearing shell (102) and the second bearing shell (103) back are equipped with fin (104), and it is logical that the gap between fin (104) constitutes heat dissipation
Road.
8. the even rouge experimental rig of a kind of face contact type wheel set bearing according to claim 1, it is characterised in that: further include setting
The lifting platform (11) intermediate in pedestal (3) is set, the lifting platform (11) includes elevating mechanism (1101) and platform (1102).
9. the even rouge experimental rig of a kind of face contact type wheel set bearing according to claim 8, it is characterised in that: platform
(1102) the right and left is symmetrical arranged guide rail (1103).
10. a kind of test method of the even rouge experimental rig of face contact type wheel set bearing, including a kind of face contact type wheel set bearing are even
Rouge experimental rig, which is characterized in that steps are as follows:
S1, test before prepare: turn on the switch, main shaft (9) orient so that in bearing connector (10) the first bearing shell (102) be open court
On be in a horizontal position, open the second bearing shell (103), control elevating mechanism (11) rise, the guide rail on platform (1101)
(1102) it is flushed with external standard rail；
S2, workpiece load: by wheel to be tested on the guide rail (1103) for being pushed into platform (11) in parallel by standard rail；Control rises
Descending mechanism (11) decline, so that wheel set bearing just drops into the first bearing shell (102)；It covers the second bearing shell (103), and by
Two bearing shells (103) are fixed on the ontology (101) of bearing connector (10)；Subsequent oil cylinder (5) movement, piston downlink, under
Claw (6) compresses tyre tread, will take turns to fixation, and persistently to entire wheel to and bearing apply radial force, this radial force can be according to not
It is adjusted with wheel-type；
Starting test: S3 inputs wheel to be tested to information such as spindle-type, axis numbers in PLC controller man-machine interface；Starting, automatically
Test；
S4, even rouge test: PLC controls transducer drive motor (8), drives main shaft (9), bearing connector (10) and takes turns to axis
Bearing outer-ring rotation carries out even rouge, carries out the acceleration under different rotating speeds, operation, deceleration or stops sequence of maneuvers；
S5, off-test: after completing test operation step, closing motor (8), so that main shaft (9) is automatically stopped, printing test report
It accuses；
S6, workpiece unloading: oil cylinder (5) movement retracts piston, so that lower pressing claw (6) leaves tyre tread；Main shaft (9) orients so that bearing
The first bearing shell (102) is opening up on connector (10) is in a horizontal position, and opens the second bearing shell (103), is lifted elevating mechanism
(11), so that test wheel adjusts elevating mechanism (11) to the first bearing shell is left, make the guide rail (1102) and mark on platform (1101)
Quasi- rail flushes, push out test wheel pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646229.7A CN109540556B (en) | 2018-12-29 | 2018-12-29 | Surface contact type wheel set bearing grease homogenizing test device and test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646229.7A CN109540556B (en) | 2018-12-29 | 2018-12-29 | Surface contact type wheel set bearing grease homogenizing test device and test method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN109540556A true CN109540556A (en) | 2019-03-29 |
| CN109540556B CN109540556B (en) | 2020-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| 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 |
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