CN219657455U - Bearing electric corrosion test device of multiple test shafting - Google Patents
Bearing electric corrosion test device of multiple test shafting Download PDFInfo
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- CN219657455U CN219657455U CN202320641482.3U CN202320641482U CN219657455U CN 219657455 U CN219657455 U CN 219657455U CN 202320641482 U CN202320641482 U CN 202320641482U CN 219657455 U CN219657455 U CN 219657455U
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Abstract
The utility model relates to the technical field of bearing tests, in particular to the technical field of bearing electric corrosion tests, and specifically relates to a bearing electric corrosion test device of a multi-test shafting. The utility model aims to provide a bearing electric corrosion test device for a multi-test shafting, which comprises a test base, a plurality of test shafting, a motor and a multi-output gear box, wherein an insulating protection plate is arranged on the test base, the test shafting, the motor and the multi-output gear box are positioned on the test base, a rotating shaft of the motor is connected with an input shaft of the multi-output gear box, and a plurality of output shafts of the multi-output gear box are respectively connected with test rotating shafts of the plurality of test shafting through insulating couplings. The utility model skillfully realizes an arrangement method for simultaneously simulating different working conditions by a plurality of test shafting by means of the multi-output gear box, thereby reducing test cost and test period.
Description
Technical Field
The utility model relates to the technical field of bearing tests, in particular to the technical field of bearing electric corrosion tests, and specifically relates to a bearing electric corrosion test device of a multi-test shafting.
Background
Along with the rapid development of high-speed railways, urban rail transit and new energy wind power generation markets and the low-carbon development requirements of China, high efficiency, energy conservation and greenness become the development center of the industries. The PWM frequency conversion control technology and the application of new power components such as silicon carbide, gallium nitride and the like can reduce the motor loss, improve the power, reduce the equipment weight and assist the lightweight development of products, but the inherent pulse property of the PWM technology ensures that the output voltage has high change ratedu/dt) Meanwhile, the voltage phase difference of U, V, W phases at the output end is 120 degrees, the sum of the voltage phase difference and the voltage phase difference is not 0, a high common-mode voltage exists, the high-frequency common-mode voltage formed under the combined action of the voltage phase difference and the voltage phase difference acts on the motor, the shaft voltage is coupled on the motor rotating shaft, the voltage of the novel power component and the voltage of the main power supply loop are increased, the effect is further enhanced, and the frequency and the amplitude of the shaft voltage are improved.
When the motor operates, the inner ring of the rolling bearing and the rolling bodies, and the rolling bodies and the outer ring are capacitive, and the high-frequency shaft voltage directly acts on the bearing as the outer ring of the motor bearing is connected with the motor base and the inner ring is connected with the rotating shaft. When the shaft voltage is far greater than the insulation threshold value of the bearing, a capacitor discharge phenomenon is generated, a discharge current, namely a shaft current, is generated, the current breaks through a lubricating oil film and causes local high temperature to be generated between the rolling body and the inner ring and the outer ring of the bearing, a melting pit is formed on the surface of the rolling body, after a period of operation, serious washboard lines appear on the outer ring raceway surface of the bearing, abnormal operation noise and abrasion of the bearing are caused, namely the bearing forms electric corrosion, and therefore the service life and equipment reliability of the bearing are reduced.
In the experimental study of the electric corrosion of bearings, the value of the current density is mainly used as the standard for evaluating whether the electric corrosion of the bearings occurs in early stages, namely when the current density is less than 0.1A/mm 2 If the bearing is not corroded electrically, the value isThe research foundation is mainly based on an early power frequency alternating current environment, the method is not suitable for the power frequency of up to 1M Hz at the present stage, and meanwhile, after the bearing runs, the contact area of a rolling body and a roller way surface is continuously changed, and the change condition of the current density of the bearing cannot be accurately estimated, so that the current industry and various students focus the eyes on the running service life of the bearing under a certain shaft current environment gradually, namely, the shaft current needs to be restrained, the reduction of the mechanical performance of the bearing or the increase of the operation and maintenance cost caused by excessively restraining the shaft current is avoided, and meanwhile, the expected service life of the bearing in the electric field environment can be ensured, so that a test machine capable of relatively truly simulating the running state of the bearing is required, namely, the bearing structure, the load born by the bearing, the oil film state, the shaft voltage and other boundary conditions can be reasonably applied to a test.
The first prior art is: the electric corrosion damage test device applicable to the bearings with multiple types applied by Beijing university of transportation Liu Ruifang can effectively simulate electric corrosion damage failure caused by current flowing through the bearings in the running process of a motor, has the relevant test requirements of bearing electric parameters, discharge breakdown rules, electric corrosion morphology evolution and the like, but can only develop test researches aiming at a single test shafting, cannot develop bearing electric corrosion tests with more types and different current frequencies at the same time, and has certain resource waste if a plurality of test devices are adopted for developing test researches; meanwhile, the scheme uses the carbon brush structure, the carbon brush has certain abrasion in the running process, the accuracy of a measuring result is affected, carbon brush powder also easily enters a bearing chamber, the test result is interfered, and the accuracy of the test result is reduced.
And the second prior art is as follows: the device comprises a loading device and a measurement and control device, and can be used for conveniently and effectively simulating the damage condition of the bearing caused by the shaft current under different working conditions by combining the loading device and the measurement and control device, but the scheme can only be used for carrying out experimental study of a single experimental shafting.
Because bearing electric corrosion is a phenomenon which gradually develops along with time, the test time is long, and if only a single test shafting can be tested and researched each time, the test research efficiency is low, so that a device capable of carrying out bearing electric corrosion tests of a plurality of test shafting is urgently needed at present, and the device has higher value for improving the research efficiency and reducing the research cost.
Disclosure of Invention
The utility model aims to provide a bearing electric corrosion test device for a multi-test shafting.
The utility model is realized by adopting the following technical scheme: the bearing electric corrosion test device of the multi-test shafting comprises a test base provided with an insulating protection plate, a plurality of test shafting, a motor and a multi-output gear box, wherein the test base is positioned on the test base, the plurality of test shafting, the motor and the multi-output gear box are positioned on the test base, a rotating shaft of the motor is connected with an input shaft of the multi-output gear box, and a plurality of output shafts of the multi-output gear box are respectively connected with test rotating shafts of the plurality of test shafting through insulating couplings.
Description of working principle: the test base is a supporting part of the whole test device, so that the test device is ensured to be reliable in structure; the insulating protection plate can prevent current from leaking to other places such as the ground through the test base, so that the safety of test staff is protected; the output shaft of the multi-output gear box is connected with the test rotating shaft of the test shafting through an insulating coupler, so that current is prevented from entering the gear box through the coupler; through the multi-output gear box, the torque of the motor is respectively output to the test rotating shafts of a plurality of test shafting, so that a plurality of test shafting can be simultaneously arranged on one test device, one motor can drive the plurality of test shafting to operate, and the plurality of shafting can be configured with different working conditions, thereby realizing the bearing electric corrosion test of the plurality of shafting under the environment of one equipment for simultaneously simulating different working conditions, improving test efficiency and reducing research cost.
Further, each test shafting comprises a test rotating shaft, a test bearing sleeved and fixed in the middle of the test rotating shaft, a test bearing lubrication sealing structure matched with the test bearing, two test bearings respectively positioned at two ends of the test bearing, two test bearing lubrication sealing structures matched with the two test bearings, and a variable frequency power supply, wherein the lower part of each test bearing lubrication sealing structure is connected with a test base through a conductive support column, binding posts are arranged on each conductive support column, and the two binding posts are respectively connected with two poles of the variable frequency power supply. The two test bearings can be selected from bearings of different models or test bearing schemes identical to motor configuration schemes according to requirements, the lubrication sealing structures of the two test bearings can be designed by referring to the actual structure of the motor, during test, binding posts on the two conductive support posts are respectively connected with two poles of a variable frequency power supply, and then a current transmission path sequentially comprises one binding post, one conductive support post, one test bearing lubrication sealing structure, one test bearing, a test rotating shaft, the other test bearing lubrication sealing structure, the other conductive support post and the other binding post, so that the running condition of the two test bearings in an electrified environment is simulated; secondly, the variable frequency power supply is convenient for simulating different shaft voltages born by the test bearing in actual operation; in addition, the variable frequency power supply is introduced into the test shafting through the two binding posts, so that the problem of poor contact caused by the carbon brush scheme is avoided, and meanwhile, the problem of distortion of test results caused by carbon brush powder entering bearing lubricating grease after long-time running is also avoided, so that normal test performance is ensured.
Further, each test shafting further comprises a radial loading device which is arranged above the test bearing lubrication sealing structure and used for loading radial force to the test bearing and the test bearing lubrication sealing structure, and a door-shaped protective cover plate which is respectively fixed above the two test bearing lubrication sealing structures and used for supporting and installing the radial loading device, wherein insulating protective pads are respectively arranged between the upper part of the test bearing lubrication sealing structure and the radial loading device, between the upper parts of the two test bearing lubrication sealing structures and the two ends of the protective cover plate. By the radial loading device, acting forces such as rotor gravity, magnetic tension and force acting on the bearing by line impact in the operation of the motor can be simulated, so that the actual operation state of the bearing can be restored more truly, and the reliability of the test is further improved. Working principle: when the test starts, the motor outputs the torque of the motor to the output rotating shafts of a plurality of test shafting through the multi-shaft output gear box, at the moment, the motor drives the test rotating shafts of the test shafting to rotate, the radial loading device gives radial force to the test bearing and the test bearing sealing structure, the radial force can be calculated through the mass of the motor rotor, unilateral magnetic tension, external vibration and the like, the radial force respectively generates two reaction forces at the two test bearings and the two test bearing lubrication sealing structures through the test rotating shafts and the two conductive support columns, the magnitude of the force is similar to the support reaction force born by the test bearings when the motor actually runs, and meanwhile, the lubricating grease is injected into the structure in advance by means of the test bearing lubrication sealing structure designed by 1:1, so that the running state of the bearing in the motor can be more truly restored; in addition, insulating protection pads are arranged between the upper parts of the accompanying test bearing lubrication sealing structures and the radial loading devices, and between the upper parts of the two test bearing lubrication sealing structures and the two ends of the protection cover plate, so that current cannot flow upwards to ensure that the current flows according to a given route, the action mechanism of shaft voltage on bearing electric corrosion is truly reflected, and the safety of test personnel is ensured.
The beneficial effects of the utility model are as follows: 1) The utility model skillfully realizes an arrangement method for simultaneously simulating different working conditions by a plurality of test shafting by means of the multi-output gear box, thereby reducing test cost and test period; 2) According to the utility model, a power supply is introduced into a test shafting through two binding posts, so that the problem of poor contact in a carbon brush scheme is avoided, and the problem of test result distortion caused by carbon brush powder entering bearing lubricating grease after long-time operation is also avoided; 3) The utility model can check the performances of bearings of different factories and different processes under the condition of electric corrosion, provides references for enterprises to select proper bearings, and reduces the later maintenance loss of the enterprises.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic structural diagram of a test shafting;
FIG. 3 is an enlarged view of the upper half of FIG. 2;
FIG. 4 is a schematic diagram of a test bearing and a test bearing lubrication seal structure;
fig. 5 is a schematic diagram of a temperature sensor arrangement.
In the figure: 1-speed regulating motor, 2-protective cover, 3-test shafting, 301-test rotating shaft, 302-test bearing, 303-test bearing lubrication sealing structure, 304-protective cover plate, 305-radial loading device, 306-spindle nose compression ring, 307-test accompanying bearing, 308-test accompanying bearing lubrication sealing structure, 309-conductive support column, 310-binding post, 311-insulation protection pad, 312-bearing outer cover, 313-bearing inner cover, 314-bearing sealing ring, 315-vibration sensor, 316-temperature sensor, 317-connecting bolt, 4-insulation protection plate, 5-test base, 6-multi-output gear box, 7-rotation speed sensor and 8-variable frequency power supply.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be made. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the description, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms described above will be understood by those of ordinary skill in the art as the case may be.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the utility model.
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a bearing electric corrosion test device for multiple test shafting comprises a test base 5 (in specific implementation, the test base 5 and the insulation protection plate 4 are fixedly connected through insulation bolts) provided with an insulation protection plate 4, and multiple test shafting 3, a motor and multiple output gear boxes 6 which are positioned on the test base 5, wherein a rotating shaft of the motor is connected with an input shaft of the multiple output gear boxes 6, and multiple output shafts of the multiple output gear boxes 6 are respectively connected with test rotating shafts 301 of the multiple test shafting 3 through insulation couplings.
Description of working principle: the test base 5 is a supporting part of the whole test device, so that the structure of the test device is ensured to be reliable; the insulating protection plate 4 can prevent current from leaking to other places such as the ground through the test base 5, so that the safety of test staff is protected; the output shaft of the multi-output gear box 6 is connected with the test rotating shaft 301 of the test shafting 3 through an insulating coupling, so that current is prevented from entering the gear box through the coupling; through the multi-output gear box 6, the torque of the motor is respectively output to the test rotating shafts 301 of the plurality of test shafting 3, so that the plurality of test shafting 3 can be simultaneously arranged on one test device, one motor can drive the plurality of test shafting 3 to operate, and the plurality of shafting can be configured with different working conditions, thereby realizing the bearing electric corrosion test of the plurality of shafting under the environment of one equipment which can simultaneously simulate different working conditions, improving the test efficiency and reducing the research cost.
In specific implementation, the motor is a speed regulating motor 1. In specific implementation, the test device further comprises a protective cover 2 which is arranged on the test base 5 and is covered on the plurality of test shafting 3, the speed regulating motor 1 and the multi-output gear box 6, so that the safety of test personnel is further ensured.
In specific implementation, as shown in fig. 2, each test shafting 3 includes a test rotating shaft 301, a test accompanying bearing 307 sleeved and fixed in the middle of the test rotating shaft 301, a test accompanying bearing lubrication sealing structure 308 matched with the test accompanying bearing 307, two test bearings 302 respectively located at two ends of the test accompanying bearing 307, two test bearing lubrication sealing structures 303 respectively matched with the two test bearings 302, and a variable frequency power supply 8, wherein the lower part of each test bearing lubrication sealing structure 303 is supported and connected with the test base 5 through a conductive support column 309, each conductive support column 309 is provided with a binding post 310, and the two binding posts 310 are respectively connected with two poles of the variable frequency power supply 8. The two test bearings 302 may be selected from the same type of different manufacturer bearings or the same test bearing 302 scheme as the motor configuration scheme according to the requirements, the lubrication sealing structure of the two test bearings 302 may be designed with reference to the actual structure of the motor, during the test, the binding posts 310 on the two conductive support posts 309 are respectively connected with two poles of the variable frequency power supply 8, so that the current transmission path is sequentially one binding post 310, one conductive support post 309, one test bearing lubrication sealing structure 303, one test bearing 302, the test rotating shaft 301, the other test bearing 302, the other test bearing lubrication sealing structure 303, the other conductive support post 309, and the other binding post 310, thereby simulating the running condition of the two test bearings 302 in the charged environment; secondly, the variable frequency power supply 8 facilitates simulating different shaft voltages born by the test bearing 302 in actual operation; in addition, the variable frequency power supply 8 is introduced into the test shafting 3 through the two binding posts 310, so that the problem of poor contact existing in the carbon brush scheme is avoided, and meanwhile, the problem that the test result is distorted due to carbon brush powder entering the bearing lubricating grease after long-time operation is also avoided, so that normal test performance is ensured.
In specific implementation, as shown in fig. 3, each test shafting 3 further includes a radial loading device 305 located above the test-accompanying bearing lubrication sealing structure 308 and used for loading radial forces on the test-accompanying bearing 307 and the test-accompanying bearing lubrication sealing structure 308, and a gate-shaped protective cover plate 304 with two ends respectively fixed above the two test-bearing lubrication sealing structures 303 and used for supporting and installing the radial loading device 305, and insulating protective pads 311 are respectively arranged between the upper part of the test-accompanying bearing lubrication sealing structure 308 and the radial loading device 305, and between the upper parts of the two test-bearing lubrication sealing structures 303 and the two ends of the protective cover plate 304. By the radial loading device 305, acting forces such as rotor gravity, magnetic tension and force acting on the bearing by line impact in motor operation can be simulated, so that the actual running state of the bearing can be restored more truly, and the reliability of the test can be further improved. Working principle: at the beginning of the test, the motor outputs the torque to the output rotating shafts of a plurality of test shafting 3 through a multi-shaft output gear box respectively, at the moment, the motor drives the test rotating shaft 301 of the test shafting 3 to rotate, the radial loading device 305 gives a radial force to the test bearing 307 and the test bearing 307 sealing structure, the radial force can be calculated through the motor rotor mass, single-side magnetic pulling force, external vibration and the like, the radial force respectively generates two reaction forces at the two test bearings 302 and the two test bearing lubrication sealing structures 303 through the test rotating shaft 301 and the two conductive support columns 309, the force is similar to the branch reaction force born by the test bearings 302 when the motor actually runs, and meanwhile, the lubricating grease is injected into the structure in advance by virtue of the test bearing lubrication sealing structures 303 designed by 1:1, so that the running state of the bearing in the motor can be more truly reduced; in addition, insulating protective pads 311 are arranged between the upper part of the accompanying test bearing lubrication sealing structure 308 and the radial loading device 305, and between the upper parts of the two test bearing lubrication sealing structures 303 and the two ends of the protective cover plate 304, so that current cannot flow upwards to ensure that the current flows according to a given route, the action mechanism of shaft voltage on bearing electric corrosion is truly reflected, and the safety of test personnel is ensured.
In specific implementation, the test rotating shaft 301 of each test shafting 3 is a stepped shaft, and two non-opposite end surfaces of the two test bearings 302 are respectively positioned and fastened through shaft shoulders on the stepped shaft and a shaft head compression ring 306 sleeved and fixed on the rotating shaft, so that the stability of the test structure is improved.
In the specific implementation, as shown in fig. 4, each test bearing lubrication sealing structure 303 includes a bearing seal ring 314 located at two ends of the test bearing 302 and respectively sleeved and fixed on the test rotating shaft 301, a bearing outer cover 312 sleeved and fixed on the outer circumferential surface of the test bearing 302, and a bearing inner cover 313 located at two ends of the test bearing 302 and respectively fixedly connected with two ends of the bearing top cover (in the specific implementation, the two ends of the bearing top cover are fixedly connected with the bearing inner cover 313 by adopting a connecting bolt 317), wherein a radial labyrinth sealing structure is arranged between the bearing inner cover 313 and the bearing seal ring 314. In actual testing, the test bearing lubrication seal 303 may be configured according to actual test requirements.
In specific implementation, each test bearing lubrication sealing structure 303 further includes a temperature sensor 316 for monitoring the temperature of the outer ring of the test bearing 302, as shown in fig. 5, and a detection hole for installing the temperature sensor 316 is provided on the test bearing lubrication sealing structure 303, each test shafting 3 further includes a current sensor for detecting the current of the test bearing 302, a voltage sensor for detecting the voltage of the test bearing 302, a vibration sensor 315 installed on the outer cover 312 of the bearing, and a rotation speed sensor 7 fixed on the insulation protection plate 4 below the vibration sensor, which are used for monitoring the current and the voltage and the rotation speed of the test rotation shaft 301, and vibration and temperature data of the test bearing 302 in real time.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Although described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and they should be construed as covering the scope of the appended claims.
Claims (10)
1. The bearing electric corrosion test device of the multi-test shafting is characterized by comprising a test base (5) provided with an insulating protection plate (4) and a plurality of test shafting (3), a motor and a multi-output gear box (6) which are arranged on the test base (5), wherein a rotating shaft of the motor is connected with an input shaft of the multi-output gear box (6), and a plurality of output shafts of the multi-output gear box (6) are respectively connected with test rotating shafts (301) of the plurality of test shafting (3) through insulating couplings.
2. The bearing electric corrosion test device of a multi-test shafting according to claim 1, wherein the motor is a speed-regulating motor (1).
3. The bearing electric corrosion test device of the multi-test shafting according to claim 2, wherein the test base (5) and the insulating protection plate (4) are fixedly connected through insulating bolts.
4. A bearing galvanic corrosion test device according to claim 3, further comprising a protective cover (2) on the test base (5) and covering the plurality of test shafting (3), the speed regulating motor (1) and the multi-output gear box (6).
5. The bearing electric corrosion test device for the multi-test shafting according to claim 1, 2, 3 or 4, wherein each test shafting (3) comprises a test rotating shaft (301), a test bearing (307) sleeved and fixed in the middle of the test rotating shaft (301), a test bearing lubrication sealing structure (308) matched with the test rotating shaft, two test bearings (302) respectively positioned at two ends of the test bearing (307), two test bearing lubrication sealing structures (303) respectively matched with the two test bearings (302), a variable frequency power supply (8), the lower part of each test bearing lubrication sealing structure (303) is in supporting connection with a test base (5) through a conductive support column (309), each conductive support column (309) is provided with a binding post (310), and the two binding posts (310) are respectively connected with two poles of the variable frequency power supply (8).
6. The bearing electric corrosion test device for multiple test shafting according to claim 5, wherein each test shafting (3) further comprises a radial loading device (305) which is arranged above the test bearing lubrication sealing structure (308) and is used for loading radial force on the test bearing (307) and the test bearing lubrication sealing structure (308), two ends of the radial loading device are respectively fixed above the two test bearing lubrication sealing structures (303) and are used for supporting a gate-shaped protective cover plate (304) for installing the radial loading device (305), and insulating protective pads (311) are arranged between the upper part of the test bearing lubrication sealing structure (308) and the radial loading device (305) and between the upper parts of the two test bearing lubrication sealing structures (303) and two ends of the protective cover plate (304).
7. The bearing electric corrosion test device for the multiple test shafting according to claim 6, wherein the test rotating shaft (301) of each test shafting (3) is a stepped shaft, and two non-opposite end surfaces of the two test bearings (302) are respectively positioned and fastened through shaft shoulders on the stepped shaft and shaft head pressing rings (306) sleeved and fixed on the rotating shaft.
8. The bearing electric corrosion test device for the multi-test shafting according to claim 7, wherein each test bearing lubrication sealing structure (303) comprises bearing sealing rings (314) which are positioned at two ends of a test bearing (302) and are respectively sleeved and fixed on the test rotating shaft (301), a bearing outer cover (312) which is sleeved and fixed on the outer circumferential surface of the test bearing (302), and bearing inner covers (313) which are respectively positioned at two ends of the test bearing (302) and are respectively fixedly connected with two ends of the bearing top cover, and a radial labyrinth sealing structure is arranged between the bearing inner covers (313) and the bearing sealing rings (314).
9. The bearing electric corrosion test apparatus of a multi-test shafting according to claim 8, wherein each test bearing lubrication seal structure (303) further includes a temperature sensor (316) for monitoring the temperature of the outer ring of the test bearing (302) and a detection hole provided on the test bearing lubrication seal structure (303) for mounting the temperature sensor (316).
10. The bearing galvanic corrosion test device according to claim 9, wherein each test shaft system (3) further comprises a current sensor for detecting the current of the test bearing (302), a voltage sensor for detecting the voltage of the test bearing (302), a vibration sensor (315) mounted on the bearing outer cover (312), and a rotation speed sensor (7) fixed on the insulating protection plate (4) below the vibration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320641482.3U CN219657455U (en) | 2023-03-28 | 2023-03-28 | Bearing electric corrosion test device of multiple test shafting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320641482.3U CN219657455U (en) | 2023-03-28 | 2023-03-28 | Bearing electric corrosion test device of multiple test shafting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219657455U true CN219657455U (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320641482.3U Active CN219657455U (en) | 2023-03-28 | 2023-03-28 | Bearing electric corrosion test device of multiple test shafting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219657455U (en) |
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2023
- 2023-03-28 CN CN202320641482.3U patent/CN219657455U/en active Active
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