CN116773200A - Large-scale antifriction bearing performance examination testing machine - Google Patents
Large-scale antifriction bearing performance examination testing machine Download PDFInfo
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- CN116773200A CN116773200A CN202310829411.0A CN202310829411A CN116773200A CN 116773200 A CN116773200 A CN 116773200A CN 202310829411 A CN202310829411 A CN 202310829411A CN 116773200 A CN116773200 A CN 116773200A
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- 238000012360 testing method Methods 0.000 title claims abstract description 89
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 238000013016 damping Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention provides a large-scale rolling bearing performance assessment testing machine which comprises a base, a testing shafting, a loading system, a driving device, a vibration reduction device and a guide rail system, wherein the base is connected with the testing shafting; the test shafting comprises a main shaft, and a test bearing assembly and a support bearing assembly which are installed in a matched manner with the main shaft, wherein the support bearing assembly is fixed on the inner side of the vertical wall of the base, and one end of the test bearing assembly is connected with one end of the loading system; the power output shaft of the driving device is connected with the main shaft; the guide rail system is arranged between the horizontal supporting surface of the base and the test bearing assembly and is used for guiding the installation of the test shafting and supporting the test shafting. The beneficial effects of the invention are as follows: the L-shaped structure base and the horizontal loading mode of the testing machine enable the overall structure to have low gravity center, high rigidity and strong vibration resistance, have enough safety when bearing severe vibration, impact and jolt test working conditions, and are matched with a vibration excitation test bed to check the performance of the bearing in a vibration and jolt environment.
Description
Technical Field
The invention belongs to the technical field of bearing testers, and particularly relates to a large-scale rolling bearing performance assessment tester.
Background
The bearing is a basic part of mechanical equipment, is an important key part, and the performance of the bearing determines the working reliability of the host to a certain extent. The bearing is checked according to the actual application working condition, so that the working performance of the tested bearing can be obtained, and the comprehensive performance of the tested bearing is effectively evaluated. The large rolling bearing for the ship and other heavy industries has the advantages of large working load, severe environment, severe vibration and impact, extremely high requirements on the reliability of the bearing, non-negligible influence of the use environment on the performance of the bearing, and the necessity of performance assessment of the bearing under the condition of considering actual vibration impact.
Disclosure of Invention
The invention aims to provide a testing machine suitable for evaluating various performances of a large rolling bearing, which has low gravity center and high rigidity, can be used for evaluating the performances of a conventional bearing, and can be matched with a vibration excitation test bed to evaluate the performances of the bearing in a vibration and jolt environment.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a large-scale rolling bearing performance assessment testing machine comprises a base, a testing shafting, a loading system, a driving device, a vibration damping device and a guide rail system; wherein,,
the base comprises a horizontal supporting surface and a vertical wall which are vertical to each other;
the test shafting comprises a main shaft, and a test bearing assembly and a support bearing assembly which are installed in a matched manner with the main shaft, wherein the support bearing assembly is fixed on the inner side of the vertical wall of the base, and one end of the test bearing assembly is connected with one end of the loading system;
the loading system comprises a loading oil cylinder and a loading frame, one end of the loading oil cylinder is fixed on the outer side of the vertical wall, the other end of the loading oil cylinder is connected with the stress end of the loading frame, the loading frame is movably arranged through the vertical wall, the force application end of the loading frame is connected with one side of the test bearing assembly opposite to the vertical wall, and the loading direction of the loading system is a horizontal direction;
the driving device is arranged on the vibration damper, and a power output shaft of the driving device is connected with the main shaft;
the vibration reduction device is fixed on the horizontal supporting surface of the base;
the guide rail system is arranged between the horizontal supporting surface of the base and the test bearing assembly and is used for guiding the installation of the test shafting and supporting the test shafting.
Further, a support bearing assembly consisting of a first support bearing assembly and a second support bearing assembly is arranged in the test shafting, and the test bearing assembly is located between the first support bearing assembly and the second support bearing assembly.
Furthermore, one support bearing is arranged in each of the first support bearing assembly and the second support bearing assembly, and the two support bearings are of the same model.
Specifically, a loading frame in the loading system comprises a first connecting plate, a second connecting plate and a pull rod for connecting the first connecting plate and the second connecting plate, wherein the pull rod penetrates through a pull rod hole of the vertical wall and is locked with the second connecting plate through a rod end nut; the first connecting plate is connected with the loading oil cylinder, and the second connecting plate is connected with the test bearing assembly.
Further, the position of the second connecting plate, which is contacted with the test bearing assembly, is arranged in an arc shape so as to be attached to the circumferential surface of the test bearing assembly.
Further, a force sensor is arranged between the first connecting plate and the loading oil cylinder.
Specifically, the driving device comprises a servo motor, a coupler, a torque sensor and an encoder, wherein the servo motor is fixed on the vibration damper, a power output shaft of the servo motor is connected with the main shaft through the coupler, and the torque sensor and the encoder are arranged on the power output shaft of the servo motor.
Further, the coupler is a diaphragm coupler.
Specifically, the vibration damper comprises a vibration damper seat and a vibration damper pad arranged on the surface of the vibration damper seat, and the driving device is arranged on the vibration damper pad.
Specifically, the guide rail system include guide rail, slider and cushion, the guide rail is installed on the horizontal support surface of base, and the slider slides and sets up on the guide rail, slider and cushion fixed connection are equipped with on the cushion with experimental bearing assembly excircle face complex arc stationary plane.
The beneficial effects of the invention are as follows: the L-shaped structure base and the horizontal loading mode of the testing machine enable the overall structure to have low gravity center, high rigidity and strong vibration resistance, have enough safety when bearing severe vibration, impact and jolt test working conditions, and are matched with a vibration excitation test bed to check the performance of the bearing in a vibration and jolt environment. The tester loading device is positioned on the vertical wall of the base, the working load is borne by the vertical wall of the base, and the vertical wall of the base has certain toughness due to the partial hollow structure, so that the safety is high, and the tester has high limit loading force.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a base structure of the present invention;
FIG. 3 is a schematic diagram of the composition of the test shafting of the present invention;
FIG. 4 is a schematic diagram of the loading system of the present invention;
FIG. 5 is a schematic view of the vibration damping device of the present invention;
FIG. 6 is an exploded view of the track system of the present invention;
fig. 7 is an exploded view of the drive device.
Reference numerals illustrate:
1. the base, 101, the horizontal supporting surface, 102, the vertical wall, 103, the pull rod hole, 104 and the hole;
2. the test shaft system comprises a test shaft system, 201, a main shaft, 202, a first support bearing assembly, 203, a second support bearing assembly, 204 and a test bearing assembly;
3. the device comprises a loading system 301, a loading oil cylinder 302, a force sensor 303, a first connecting plate 304, a pull rod 305, a rod end nut 306 and a second connecting plate;
4. the device comprises a driving device 401, a servo motor 402, an encoder 403, a torque sensor 404 and a diaphragm coupler;
5. damping device 501, damping seat 502, damping pad;
6. rail system 601, rail, 602, slider, 603, cushion.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples, which are not intended to be limiting.
As shown in fig. 1, the large-scale rolling bearing performance assessment testing machine comprises six parts, namely a base 1, a test shafting 2, a loading system 3, a driving device 4, a vibration damper 5 and a guide rail system 6.
The base 1 is L-shaped and comprises a horizontal supporting surface 101 and a vertical wall 102 which are perpendicular to each other, the horizontal supporting surface 101 is used for supporting the test shafting 2, the vertical wall 102 is used for installing the loading system 3, and a plurality of base plates are arranged on the horizontal supporting surface 101 and the vertical wall 102. The vertical wall 102 has a plurality of holes 104 therein to improve the toughness and safety of the vertical wall 102, so that the testing machine has a high limit loading force.
The test shafting 2 comprises a main shaft 201, two support bearing assemblies and a test bearing assembly 204, wherein the two support bearing assemblies are a first support bearing assembly 202 and a second support bearing assembly 203 respectively, the test bearing assembly 204 is positioned between the first support bearing assembly 202 and the second support bearing assembly 203, three bearing assemblies are arranged on the main shaft 201, and the main shaft 201 is in transmission connection with the driving device 4; the first support bearing assembly 202 and the second support bearing assembly 203 each comprise support bearings and bearing blocks of the same type, and the first support bearing assembly 202 and the second support bearing assembly 203 are fixed on the backing plate of the inner side face of the vertical wall 102 of the base 1 through the respective bearing blocks.
The loading system 3 comprises a loading oil cylinder 301, a force sensor 302, a pull rod 304, a first connecting plate 303 and a second connecting plate 306; the two pull rods 304 are movably arranged in the pull rod holes 103 formed in the vertical wall 102 of the base 1 in a penetrating manner, the first connecting plate 303 is connected with the same end of the pull rod 304, and the second connecting plate 306 is connected with the other end of the pull rod 304, so that a rectangular loading frame is formed; the cylinder body of the loading cylinder 301 is fixed on the outer side surface of the vertical wall 102 of the base 1, namely, the loading cylinder 301 and the test bearing assembly 204 are respectively located on two opposite sides of the vertical wall 102, the piston end of the loading cylinder 301 is connected with the first connecting plate 303 through the force sensor 302, the second connecting plate 306 is provided with a circular arc connecting surface which is in contact fit with the outer circular surface of the test bearing assembly 204, the end part of the pull rod 304 is locked with the second connecting plate 306 through the rod end nut 305, and the fit between the second connecting plate 306 and the test bearing assembly 204 is ensured. The loading direction of the loading system 3 is a horizontal direction, and when the loading system works, the loading oil cylinder 301 transfers load to the test bearing assembly 204 of the test shafting 2 through the loading frame.
The driving device 4 comprises a servo motor 401, an encoder 402, a torque sensor 403 and a diaphragm coupler 404, wherein the servo motor 401 is fixed on the vibration damper 5, a power output shaft of the servo motor 401 is connected with the main shaft 201 through the diaphragm coupler 404, and the diaphragm coupler 404 is used for transmitting the torque of the servo motor 401 to the main shaft 201 and resisting the shaft misalignment caused by vibration and jolt working conditions to a certain extent; the power output shaft of the servo motor 401 is provided with a torque sensor 403 and an encoder 402, wherein the torque sensor 403 is used for measuring friction torque of a test bearing, and the encoder 402 is used for monitoring output rotating speed.
Alternatively, the diaphragm coupler 404 may be a coupler of other configurations.
The vibration damper 5 comprises a vibration damper seat 501 and a vibration damper pad 502, the vibration damper seat 501 is fixed on a base plate of the horizontal supporting surface 101 of the base 1, four vibration damper pads 502 in rectangular layout are fixed on the top surface of the vibration damper seat 501, and the servo motor 401 is arranged on the vibration damper pads 502 to reduce the impact of vibration and jolt working conditions on the motor, so that the driving device is protected.
The guide rail system 6 comprises a guide rail 601, a sliding block 602 and a cushion block 603, wherein the guide rail 601 is fixed on a base plate of the horizontal supporting surface 101 of the base 1, the guide rail 601 is parallel to the pull rod 304, the upper surface of the cushion block 603 is provided with an arc surface attached to the outer circular surface of the lower part of the test bearing assembly 204, the lower surface of the cushion block 603 is fixedly connected with the sliding block 602, and the sliding block 602 can horizontally slide along the guide rail 601. It should be noted that: the width of the second connecting plate 306 is smaller than the axial width of the test bearing assembly 204, so that the cushion block 603 and the second connecting plate 306 are arranged in a staggered manner, and interference problems cannot occur. When the test shafting 2 is installed, the test bearing assembly 204 can be connected with the cushion block 603 and the sliding block 602, and the sliding block 602 slides along the guide rail 601 to provide guidance for the installation of the support bearing assembly and support the test shafting 2 in use.
The bearing testing machine disclosed by the invention can be obtained by carrying out stress analysis: when the loading system 3 outputs a larger working load, the load is mainly borne by the vertical wall 102 of the base 1, and the horizontal supporting surface 101 of the base 1 is prevented from being deformed due to the large load by the installation mode of the horizontal arrangement of the loading system 3, so that the coupling strength of the base of the testing machine and the coupling screw of the vibration excitation test bed is influenced.
When the test device works, three sets of bearing assemblies are firstly arranged on a main shaft 201 through a shaft sleeve, then the main shaft 201 is pushed to the vertical wall 102 of the base 1 along a guide rail 601, a test shafting 2 is fixed on the vertical wall 102 of the base 1 by a turnover angle, then performance monitoring devices such as a temperature sensor, a vibration sensor and the like can be arranged on the test bearing assemblies 204, then a loading system 3, a vibration reduction device 5 and a driving device 4 are arranged, and finally the whole test device is arranged on a vibration excitation test bed through screw holes on the horizontal supporting surface 101 of the base 1 for bearing performance assessment test.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present invention with reference to the above embodiments, and any modifications and equivalents not departing from the spirit and scope of the present invention are within the scope of the claims appended hereto.
Claims (10)
1. The utility model provides a large-scale antifriction bearing performance assessment testing machine which characterized in that: the test device comprises a base (1), a test shafting (2), a loading system (3), a driving device (4), a vibration damping device (5) and a guide rail system (6); wherein,,
the base (1) comprises a horizontal supporting surface (101) and a vertical wall (102) which are vertical to each other;
the test shafting (2) comprises a main shaft (201), and a test bearing assembly (204) and a support bearing assembly which are installed in a matched mode with the main shaft (201), wherein the support bearing assembly is fixed on the inner side of a vertical wall (102) of the base (1), and one end of the test bearing assembly (204) is connected with one end of the loading system (3);
the loading system (3) comprises a loading oil cylinder (301) and a loading frame, one end of the loading oil cylinder (301) is fixed on the outer side of the vertical wall (102), the other end of the loading oil cylinder (301) is connected with the stress end of the loading frame, the loading frame movably penetrates through the vertical wall (102) to be arranged, the force application end of the loading frame is connected with one side of the test bearing assembly (204) opposite to the vertical wall (102), and the loading direction of the loading system (3) is a horizontal direction;
the driving device (4) is arranged on the vibration damper (5), and a power output shaft of the driving device (4) is connected with the main shaft (201);
the vibration reduction device (5) is fixed on a horizontal supporting surface (101) of the base;
the guide rail system (6) is arranged between the horizontal supporting surface (101) of the base (1) and the test bearing assembly (204) and is used for guiding the installation of the test shafting (2) and supporting the test shafting (2).
2. The large-sized rolling bearing performance assessment testing machine according to claim 1, wherein: the test shafting (2) is internally provided with a support bearing assembly consisting of a first support bearing assembly (202) and a second support bearing assembly (203), and the test bearing assembly (204) is positioned between the first support bearing assembly (202) and the second support bearing assembly (203).
3. The large-sized rolling bearing performance assessment testing machine according to claim 2, wherein: one support bearing is arranged in each of the first support bearing assembly (202) and the second support bearing assembly (203), and the two support bearings are of the same model.
4. The large-sized rolling bearing performance assessment testing machine according to claim 1, wherein: the loading frame in the loading system (3) comprises a first connecting plate (303), a second connecting plate (306) and a pull rod (304) for connecting the first connecting plate (303) and the second connecting plate (306), wherein the pull rod (304) passes through a pull rod hole (103) of the vertical wall (102) and locks the second connecting plate (306) through a rod end nut (305); the first connecting plate (303) is connected with the loading oil cylinder (301), and the second connecting plate (303) is connected with the test bearing assembly (204).
5. The large-sized rolling bearing performance assessment testing machine according to claim 4, wherein: the position of the second connecting plate (306) contacted with the test bearing assembly (204) is arranged in an arc shape so as to be attached to the circumferential surface of the test bearing assembly (204).
6. The large-sized rolling bearing performance assessment testing machine according to claim 4, wherein: a force sensor (302) is further arranged between the first connecting plate (303) and the loading oil cylinder (301).
7. The large-sized rolling bearing performance assessment testing machine according to claim 1, wherein: the driving device (4) comprises a servo motor (401), a coupler, a torque sensor (403) and an encoder (402), wherein the servo motor (401) is fixed on the vibration damper (5), a power output shaft of the servo motor (401) is connected with the main shaft (201) through the coupler, and the torque sensor (403) and the encoder (402) are arranged on the power output shaft of the servo motor (401).
8. The large-sized rolling bearing performance assessment testing machine according to claim 7, wherein: the coupling is a diaphragm coupling (404).
9. The large-sized rolling bearing performance assessment testing machine according to claim 1, wherein: the vibration damper (5) comprises a vibration damper seat (501) and a vibration damper pad (502) arranged on the surface of the vibration damper seat (501), and the driving device (4) is arranged on the vibration damper pad (502).
10. The large-sized rolling bearing performance assessment testing machine according to claim 1, wherein: the guide rail system (6) comprises a guide rail (601), a sliding block (602) and a cushion block (603), wherein the guide rail (601) is arranged on a horizontal supporting surface (101) of the base (1), the sliding block (602) is arranged on the guide rail (601) in a sliding mode, the sliding block (602) is fixedly connected with the cushion block (603), and an arc-shaped fixing surface matched with the outer circular surface of the test bearing assembly (204) is arranged on the cushion block (603).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310829411.0A CN116773200A (en) | 2023-07-07 | 2023-07-07 | Large-scale antifriction bearing performance examination testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310829411.0A CN116773200A (en) | 2023-07-07 | 2023-07-07 | Large-scale antifriction bearing performance examination testing machine |
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|---|---|
| CN116773200A true CN116773200A (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310829411.0A Pending CN116773200A (en) | 2023-07-07 | 2023-07-07 | Large-scale antifriction bearing performance examination testing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119147202A (en) * | 2024-11-13 | 2024-12-17 | 天津航天瑞莱科技有限公司 | Cam type jolt test device |
-
2023
- 2023-07-07 CN CN202310829411.0A patent/CN116773200A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119147202A (en) * | 2024-11-13 | 2024-12-17 | 天津航天瑞莱科技有限公司 | Cam type jolt test device |
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