CN219977767U - Spliced railway bearing fault diagnosis test bed - Google Patents
Spliced railway bearing fault diagnosis test bed Download PDFInfo
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- CN219977767U CN219977767U CN202321102262.XU CN202321102262U CN219977767U CN 219977767 U CN219977767 U CN 219977767U CN 202321102262 U CN202321102262 U CN 202321102262U CN 219977767 U CN219977767 U CN 219977767U
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- 238000012360 testing method Methods 0.000 title claims abstract description 131
- 238000003745 diagnosis Methods 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims description 28
- 230000001360 synchronised effect Effects 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000004519 grease Substances 0.000 description 4
- 230000001066 destructive effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses a spliced railway bearing fault diagnosis test bed which comprises a base, a horizontal rotating spindle which is connected with the base in a shaft way and can rotate around the axis of the rotating spindle, a spliced spindle head which is connected with the coaxial line of the rotating spindle in a detachable and fixed way, a test bearing with an inner ring which is detachably and fixedly arranged on the spliced spindle head, a test bearing seat which is detachably and fixedly sleeved on the outer ring of the test bearing, and a load loading device which is fixedly arranged on the base and is used for applying loading force to the test bearing seat.
Description
Technical Field
The utility model relates to the technical field related to bearing testing, in particular to a spliced railway bearing fault diagnosis test bed.
Background
Bearings for railway applications must be of sufficient power to meet various complex outdoor environments, extremely high reliability, extremely high cost performance, and low maintenance. The requirements of railroad bearings are more stringent than in the industry of other bearing applications. Therefore, various railway bearing manufacturers, bearing research institutions, universities and bearing test equipment manufacturers are devoted to developing and producing various railway bearing test tables, and initial damage can be detected by applying a data processing precision algorithm through the use of a state monitoring system. Sufficient time may be provided for maintenance before serious mechanical damage or failure occurs.
The bearing of the railway is quite high in bearing capacity, so that the bearing is quite large in size and weight and quite high in cost. When the related test bed is developed, considering that the bearing needs to work under various extreme conditions, firstly, the bearing is easy to generate serious heat, the bearing inner ring and the shaft slide relatively at high temperature, and the main shaft is damaged. After the main shaft is replaced, the main shaft can be used continuously; secondly, the bearing test board needs to test railway bearings of various types, so that a large amount of bearing replacement work is needed, and time and labor are consumed; compared with the common bearing, the railway bearing has the advantages of large volume, heavy weight, higher development cost of the bearing test bench, and certain damage to the test bench, especially the main shaft is extremely easily damaged when the bearing is subjected to destructive test, so that the spliced railway bearing fault diagnosis test bench needs to be designed.
Disclosure of Invention
Aiming at the technical problems, the utility model aims to solve the problems that the workload is large and the main shaft is easy to generate heat damage when the test bearing is replaced in the prior art.
In order to achieve the above purpose, the utility model provides a spliced railway bearing fault diagnosis test bed, which comprises a base, a horizontal rotating main shaft, a spliced shaft head, a test bearing seat and a load loading device, wherein the horizontal rotating main shaft is connected with the base in a shaft way and can rotate around the axis of the rotating main shaft, the spliced shaft head is connected with the coaxial line of the rotating main shaft in a detachable and fixed way, the inner ring of the test bearing is detachably and fixedly arranged on the spliced shaft head, the test bearing seat is detachably and fixedly sleeved on the outer ring of the test bearing, and the load loading device is fixedly arranged on the base and used for applying loading force to the test bearing seat.
Preferably, the load loading device includes: the axial loading unit is used for applying loading force to the test bearing seat along the axial direction of the rotary main shaft, and the radial loading unit is fixedly arranged on the base and used for applying loading force to the test bearing seat along the radial direction of the circular rotary main shaft.
Preferably, the axial loading unit comprises a servo speed reducing motor fixedly installed on the base, a screw rod transmission mechanism fixedly installed on the base, a speed reducing mechanism for connecting the servo speed reducing motor and the screw rod transmission mechanism, and a pressure sensor fixedly installed on the output end of the screw rod transmission mechanism and capable of abutting against the outer side of the test bearing seat, and the output end of the screw rod transmission mechanism can move along the axial direction of the rotating main shaft.
Preferably, the speed reducing mechanism comprises a first synchronous wheel fixedly sleeved on an output shaft of the servo speed reducing motor, a second synchronous wheel fixedly connected with the screw rod transmission mechanism and having a diameter larger than that of the first synchronous wheel, and a synchronous belt for connecting the first synchronous wheel and the second synchronous wheel.
Preferably, the screw rod transmission mechanism comprises a mounting seat fixedly mounted on the base, a threaded rod parallel to the rotating main shaft and connected with the mounting seat in a shaft mode, a sliding sleeve sleeved on the threaded rod in a threaded mode, and a connecting arm fixedly connected with the sliding sleeve and connected with the mounting seat in a sliding mode along the axis direction of the threaded rod, the end portion, close to the rotating main shaft, of the connecting arm is fixedly connected with the pressure sensor, and the threaded rod is connected with the speed reducing mechanism.
Preferably, the radial loading unit and the axial loading unit have the same structure; wherein,
the output end of the screw rod transmission mechanism in the radial loading unit is abutted against the outside of the test bearing seat along the radial direction of the test bearing through the pressure sensor.
Preferably, the rotary main shaft is fixedly sleeved with at least one mounting bearing fixedly mounted on the base through a bearing seat.
Preferably, the test bearing housing comprises a pair of half bearing housings detachably connected by a connecting bolt.
Preferably, the test bearing seat is movably sealed with the splicing shaft head through a framework seal inner ring and a framework seal outer ring, an oil inlet through hole is formed in the test bearing seat, and a sealing bolt is connected to the oil inlet through hole in a threaded mode.
Preferably, the test bearing seat is recessed with a first positioning groove for inserting a pressure transmitter of the axial loading unit, and the test bearing seat is recessed with a second positioning groove for inserting a pressure sensor of the radial loading unit.
According to the technical scheme, the spliced railway bearing fault diagnosis test bed provided by the utility model has the beneficial effects that: firstly, when the test bearing heats the car body for a long time, the rotating main shaft does not need to be replaced, and only the splicing shaft heads need to be replaced, so that the consumption of manpower and material resources can be reduced;
secondly, by replacing splicing shaft heads with different specifications, various types of bearings can be tested on the same test bench, and the overall equipment investment cost is reduced;
thirdly, damage to the rotating main shaft can be avoided when destructive test is carried out on the test bearing, and negative influence caused by the test is reduced;
fourth, the load loading device can apply load force to the test bearing seat, and simulate to apply acting force received in use, so that the detection environment is closer to the actual use environment.
The quick-change splicing shaft head is used for realizing quick replacement, is suitable for testing various types of railway bearings on the same test bed, and can not affect other components of the test bed when the destructive test of the test bearings is carried out.
Additional features and advantages of the utility model will be set forth in the detailed description which follows; and none of the utility models are related to the same or are capable of being practiced in the prior art.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:
fig. 1 is a schematic perspective view of a spliced railway bearing fault diagnosis test stand according to the present utility model;
fig. 2 is a schematic diagram of a three-dimensional structure of a spliced railway bearing fault diagnosis test stand according to the present utility model;
FIG. 3 is a partial cross-sectional view of a spliced railway bearing fault diagnosis test stand provided by the present utility model;
fig. 4 is a cross-sectional view of an axial loading unit of the spliced railway bearing fault diagnosis test stand provided by the utility model.
Description of the reference numerals
1. Rotating the main shaft; 2. splicing the shaft heads; 3. testing a bearing; 4. test bearing seat; 5. an axial loading unit; 6. a radial loading unit; 7. a servo gear motor; 8. a screw rod transmission mechanism; 9. a speed reducing mechanism; 10. a pressure sensor; 11. a first synchronizing wheel; 12. a second synchronizing wheel; 13. a synchronous belt; 14. a mounting base; 15. a threaded rod; 16. a sliding sleeve; 17. a connecting arm; 18. a driving motor; 19. a bearing seat; 20. mounting a bearing; 21. a skeleton seal inner ring; 22. a skeleton seals the outer ring; 23. a sealing bolt; 24. a first positioning groove; 25. and a second positioning groove.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
In the present utility model, unless otherwise indicated, terms such as "upper, lower, inner, outer" and the like are used merely to denote orientations of the term in a normal use state or are commonly understood by those skilled in the art, and should not be construed as limitations of the term.
As shown in fig. 1-4, the spliced railway bearing fault diagnosis test bed comprises a base, a horizontal rotating main shaft 1, a spliced shaft head 2, a test bearing 3, a test bearing seat 4, a load loading device, and a load loading device, wherein the horizontal rotating main shaft 1 is connected with the base in a shaft way and can rotate around the axis of the rotating main shaft, the spliced shaft head 2 is connected with the rotating main shaft 1 in a coaxial line in a detachable and fixed way, the test bearing 3 is detachably and fixedly installed on the spliced shaft head 2, the test bearing seat 4 is detachably and fixedly sleeved on the outer ring of the test bearing 3, and the load loading device is fixedly installed on the base and used for applying loading force to the test bearing seat 4.
The base is also fixedly provided with a driving motor 18 of which the output shaft is fixedly connected with the rotary main shaft 1 in a coaxial way.
The splicing shaft head 2 is detachably connected with the rotary main shaft 1 through a plurality of mounting bolts, a plurality of mounting through holes for the mounting bolts to pass through are recessed in the splicing shaft head 2, and threaded holes matched with the mounting bolts are formed in the rotary main shaft 1.
When the splicing shaft heads 2 are required to be replaced, the splicing shaft heads 2 can be removed only by unscrewing and removing the mounting bolts, so that the splicing shaft heads 2 are replaced; the rotating main shaft 1 and the splicing shaft head 2 form a testing main shaft, and because the testing main shaft is easy to overheat and damage after long-time testing, the testing main shaft is divided into the rotating main shaft 1 and the splicing shaft head 2, and the testing can be continuously carried out by replacing the splicing shaft head 2, so that the consumption of manpower and material resources caused by replacing the whole testing main shaft is avoided; and can change the concatenation spindle nose 2 of different specifications to test the test bearing 3 of different specifications, also change corresponding test bearing frame 4 simultaneously, can carry out the fault test to the test bearing 3 of multiple specification on a test bench, reduce overall equipment input cost.
The load loading device can apply load force to the test bearing seat 4, and the test bearing seat 4 can transmit the load force to the outer ring of the test bearing 3, so that acting force of the test bearing 3 in an actual use environment is simulated, the test environment is closer to the use environment, and reliability of detection data is improved.
The load loading device includes: an axial loading unit 5 for applying loading force to the test bearing seat 4 along the axial direction of the rotary main shaft 1, and a radial loading unit 6 fixedly mounted on the base for applying loading force to the test bearing seat 4 along the radial direction of the rotary main shaft 1.
The axial loading unit 5 can apply axial direction's loading force to the test bearing frame 4, and the test bearing frame 4 can be with loading force transfer to the outer lane of test bearing 3, and radial loading unit 6 can apply radial direction's loading force to the test bearing frame 4, and the test bearing frame 4 can be with loading force transfer to the outer lane of test bearing 3, and the effort that simulation test bearing 3 received in the in-service use, radial loading unit 6 passes through the mounting bracket to be fixed on the base, and the mounting bracket is prior art, not shown in the figure.
The axial loading unit 5 comprises a servo gear motor 7 fixedly installed on a base, a screw rod transmission mechanism 8 fixedly installed on the base, a speed reducing mechanism 9 for connecting the servo gear motor 7 and the screw rod transmission mechanism 8, and a pressure sensor 10 fixedly installed on the output end of the screw rod transmission mechanism 8 and capable of abutting against the outer side of the test bearing seat 4, wherein the output end of the screw rod transmission mechanism 8 can move along the axial direction of the rotary main shaft 1.
The screw rod transmission mechanism 8, the speed reducing mechanism 9 and the servo speed reducing motor 7 are all used for reducing the transmission ratio, so that the moving distance of the pressure sensor 10 is controlled more accurately, the servo speed reducing motor 7 is started, the screw rod transmission mechanism 8 is driven to be started through the speed reducing mechanism 9, the output end of the screw rod transmission mechanism 8 can drive the pressure sensor 10 to move along the axial direction of the rotating main shaft 1, the pressure sensor 10 is enabled to abut against the outer side of the test bearing seat 4, and the pressure sensor 10 can detect acting force acting on the test bearing seat 4, so that the size of load force is controlled.
The speed reducing mechanism 9 comprises a first synchronous wheel 11 fixedly sleeved on the output shaft of the servo speed reducing motor 7, a second synchronous wheel 12 fixedly connected with the screw rod transmission mechanism 8 and having a diameter larger than that of the first synchronous wheel 11, and a synchronous belt 13 used for connecting the first synchronous wheel 11 and the second synchronous wheel 12.
The diameter of the second synchronizing wheel 12 is larger than that of the first synchronizing wheel 11, the transmission ratio can be reduced, the servo gear motor 7 drives the first synchronizing wheel 11 to rotate, the first synchronizing wheel 11 drives the second synchronizing wheel 12 to rotate through the synchronous belt 13, so that the screw rod transmission mechanism 8 is driven to start, and a plurality of meshing teeth matched with the first synchronizing wheel 11 and the second synchronizing wheel 12 are formed on the inner side of the synchronous belt 13.
The screw rod transmission mechanism 8 comprises a mounting seat 14 fixedly mounted on the base, a threaded rod 15 parallel to the rotary main shaft 1 and connected with the mounting seat 14 in a shaft mode, a sliding sleeve 16 sleeved on the threaded rod 15 in a threaded mode, and a connecting arm 17 fixedly connected with the sliding sleeve 16 and connected with the mounting seat 14 in a sliding mode along the axis direction of the threaded rod 15, the end portion, close to the rotary main shaft 1, of the connecting arm 17 is fixedly connected with the pressure sensor 10, and the threaded rod 15 is connected with the speed reducing mechanism 9.
When the servo gear motor 7 is started, the second synchronous wheel 12 is driven to rotate, the second synchronous wheel 12 drives the threaded rod 15 to rotate, the threaded rod 15 drives the connecting arm 17 to slide along the axis direction of the threaded rod 15 through the sliding sleeve 16, so that the pressure sensor 10 is driven to move and abut against the outer side of the test bearing seat 4, and the transmission ratio can be reduced through the cooperation of the threaded rod 15 and the sliding sleeve 16.
The radial loading unit 6 has the same structure as the axial loading unit 5; wherein,
the output end of the screw drive 8 in the radial loading unit 6 is pressed against the outside of the test bearing block 4 by a pressure sensor 10 in the radial direction of the test bearing 3.
The structure of the radial loading unit 6 is the same as that of the axial loading unit 5, so the radial loading unit 6 operates in the same manner as that of the axial loading unit 5, but the radial loading unit 6 applies a loading force to the test bearing seat 4 along the radial direction of the test bearing 3, i.e., the directions of the loading forces applied by the two are different.
The rotary main shaft 1 is fixedly sleeved with at least one mounting bearing 20 fixedly mounted on a base through a bearing seat 19.
Each support bearing seat 19 is provided with a skeleton seal, a grease filling valve, and can prevent the grease of the support bearing from running off.
The test bearing seat 4 comprises a pair of half bearing seats which are detachably connected through connecting bolts.
Two half bearing seats are assembled into the test bearing seat 4 through connecting bolts, so that the test bearing seat 4 is convenient to install and detach.
The test bearing seat 4 is movably sealed with the splicing shaft head 2 through a framework seal inner ring 21 and a framework seal outer ring 22, an oil inlet through hole is formed in the test bearing seat 4, and a sealing bolt 23 is connected to the oil inlet through hole in a threaded mode.
Grease can be injected into the oil inlet through hole, and then the oil inlet through hole is sealed through the sealing bolt 23, so that the framework sealing inner ring 21 and the framework sealing inner ring 21 have the function of preventing the grease from losing.
The test bearing seat 4 is recessed with a first positioning groove 24 for inserting a pressure transmitter of the axial loading unit 5, and the test bearing seat 4 is recessed with a second positioning groove 25 for inserting a pressure sensor 10 of the radial loading unit 6.
When the radial loading unit 6 and the axial loading unit 5 are abutted against the test shaft seat, the test shaft seat 4 is prevented from rotating by friction, but the test shaft seat 4 rotates with very low probability, and in order to avoid the problem of rotation of the test shaft seat 4, the test shaft seat 4 is provided with the first positioning groove 24 and the second positioning groove 25, so that the test shaft seat 4 can be conveniently and rapidly positioned, and the test shaft seat 4 can be prevented from rotating.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.
Claims (10)
1. The utility model provides a concatenation formula railway bearing fault diagnosis test bench, includes the base, its characterized in that still includes with base coupling and can around self axis pivoted horizontal rotating main shaft (1), with rotating main shaft (1) coaxial line detachable fixed connection's concatenation spindle nose (2), the test bearing (3) of inner circle detachable fixed mounting on concatenation spindle nose (2), can dismantle test bearing frame (4) and the fixed load loading device who is used for exerting loading force to test bearing frame (4) on the base of fixed cover on test bearing (3) outer circle.
2. The spliced railway bearing fault diagnosis test stand of claim 1, wherein the load loading device comprises: an axial loading unit (5) for applying loading force to the test bearing seat (4) along the axial direction of the rotary main shaft (1) and a radial loading unit (6) fixedly installed on the base and used for applying loading force to the test bearing seat (4) along the radial direction of the rotary main shaft (1).
3. The spliced railway bearing fault diagnosis test bed according to claim 2, wherein the axial loading unit (5) comprises a servo gear motor (7) fixedly mounted on a base, a screw transmission mechanism (8) fixedly mounted on the base, a speed reducing mechanism (9) for connecting the servo gear motor (7) and the screw transmission mechanism (8) and a pressure sensor (10) fixedly mounted on the output end of the screw transmission mechanism (8) and capable of abutting against the outer side of the test bearing seat (4), and the output end of the screw transmission mechanism (8) can move along the axial direction of the rotating main shaft (1).
4. A spliced railway bearing fault diagnosis test bed according to claim 3, characterized in that the speed reducing mechanism (9) comprises a first synchronous wheel (11) fixedly sleeved on an output shaft of the servo speed reducing motor (7), a second synchronous wheel (12) fixedly connected with the screw rod transmission mechanism (8) and having a diameter larger than that of the first synchronous wheel (11), and a synchronous belt (13) for connecting the first synchronous wheel (11) and the second synchronous wheel (12).
5. A spliced railway bearing fault diagnosis test bed according to claim 3, characterized in that the screw rod transmission mechanism (8) comprises a mounting seat (14) fixedly mounted on the base, a threaded rod (15) parallel to the rotary main shaft (1) and axially connected with the mounting seat (14), a sliding sleeve (16) sleeved on the threaded rod (15) in a threaded manner, and a connecting arm (17) fixedly connected with the sliding sleeve (16) and slidingly connected with the mounting seat (14) along the axis direction of the threaded rod (15), wherein the end part of the connecting arm (17) close to the rotary main shaft (1) is fixedly connected with the pressure sensor (10), and the threaded rod (15) is connected with the speed reducing mechanism (9).
6. A spliced railway bearing fault diagnosis test-bed according to claim 3, characterized in that the radial loading unit (6) is of the same structure as the axial loading unit (5); wherein,
the output end of the screw rod transmission mechanism (8) in the radial loading unit (6) is abutted against the outside of the test bearing seat (4) along the radial direction of the test bearing (3) through the pressure sensor (10).
7. The spliced railway bearing fault diagnosis test bed according to claim 1, wherein the rotary main shaft (1) is fixedly sleeved with at least one mounting bearing (20) fixedly mounted on a base through a bearing seat (19).
8. A spliced railway bearing fault diagnosis test stand according to claim 6, wherein the test bearing housing (4) comprises a pair of half bearing housings detachably connected by a connecting bolt.
9. The spliced railway bearing fault diagnosis test bed according to claim 1, wherein the test bearing seat (4) is movably sealed with the spliced shaft head (2) through a framework seal inner ring (21) and a framework seal outer ring (22), an oil inlet through hole is formed in the test bearing seat (4), and a sealing bolt (23) is connected to the oil inlet through hole in a threaded mode.
10. The spliced railway bearing fault diagnosis test bed according to claim 6, wherein a first positioning groove (24) for inserting a pressure transmitter of the axial loading unit (5) is recessed in the test bearing seat (4), and a second positioning groove (25) for inserting a pressure sensor (10) of the radial loading unit (6) is recessed in the test bearing seat (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321102262.XU CN219977767U (en) | 2023-05-09 | 2023-05-09 | Spliced railway bearing fault diagnosis test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321102262.XU CN219977767U (en) | 2023-05-09 | 2023-05-09 | Spliced railway bearing fault diagnosis test bed |
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| Publication Number | Publication Date |
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| CN219977767U true CN219977767U (en) | 2023-11-07 |
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| CN202321102262.XU Active CN219977767U (en) | 2023-05-09 | 2023-05-09 | Spliced railway bearing fault diagnosis test bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117686224A (en) * | 2024-02-02 | 2024-03-12 | 太原理工大学 | Fault diagnosis experiment platform for simulating cutting head bearing of heading machine |
-
2023
- 2023-05-09 CN CN202321102262.XU patent/CN219977767U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117686224A (en) * | 2024-02-02 | 2024-03-12 | 太原理工大学 | Fault diagnosis experiment platform for simulating cutting head bearing of heading machine |
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