CN114362419A - Motor bearing measuring device and method under controllable magnetic field environment - Google Patents
Motor bearing measuring device and method under controllable magnetic field environment Download PDFInfo
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- CN114362419A CN114362419A CN202210150404.3A CN202210150404A CN114362419A CN 114362419 A CN114362419 A CN 114362419A CN 202210150404 A CN202210150404 A CN 202210150404A CN 114362419 A CN114362419 A CN 114362419A
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- magnetic field
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- motor bearing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
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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
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/04—Arrangements for controlling or regulating the speed or torque of more than one motor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The application relates to a motor bearing measuring device under controllable magnetic field environment, include: the device comprises a bottom plate, a support frame, a magnetic field generator, a temperature sensor, a vibration sensor, a laser rotating speed sensor, a driving device, a control unit and a magnetic field control device. The application also discloses a measuring method using the device, the structure is simple, the measurement is simple and convenient, and the vibration, the temperature and the rotating speed of the retainer of the motor bearing can be accurately measured.
Description
Technical Field
The invention relates to the technical field of motor bearing measurement, in particular to a device and a method for measuring a motor bearing in a controllable magnetic field environment.
Background
The bearing is one of the more widely applied parts in modern mechanical equipment, the high-frequency alternating current motor is more widely applied in the field of mechanical industry along with the development of the high-frequency alternating current motor technology, for equipment such as a high-power, variable-frequency and high-voltage explosion-proof motor, a high-speed rail train traction motor and the like, a magnetic field generated in the working process is an important factor influencing the dynamic characteristic of the bearing, the influence of the magnetic field on the internal operation of the bearing can directly influence the dynamic performance of the bearing, and further, the operation performance of host equipment is greatly influenced.
The motor generates a magnetic field which can not be avoided in the operation process, the magnetic field can enable metal parts in the motor to generate magnetization attraction or mutual repulsion so as to cause larger vibration of the bearing and reduction of the rotating speed of the retainer, immeasurable destructive influence can be generated on the motor and even mechanical equipment, meanwhile, low-frequency shaft current can be caused by unbalanced magnetic circuits, the bearing operates under the condition, the current can generate damages such as corrosion pits, melting marks, electric corrosion filing, color change, micro abrasion and the like on the rotating surface, if the bearing operates continuously, the bearing can fail due to abrasion, even huge economic loss is caused, the research on the dynamic performance of the motor insulation bearing is developed, and the research has very important significance for improving the insulation performance and high reliability of the motor bearing.
At present, for a motor bearing working in a magnetic field environment, because a magnetic field generated by the rotation of a motor is difficult to detect, the influence of current on the bearing is generally monitored, and at present, a measuring method for the change influence generated in the magnetic field of the motor bearing and the bearing does not exist.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device and a method for measuring a motor bearing under a controllable magnetic field environment, which have the advantages of simple structure and convenience in measurement, and can accurately measure the vibration and temperature of the motor bearing and the rotating speed of a retainer.
The technical scheme adopted by the invention for solving the technical problems is as follows: a motor bearing measuring device under a controllable magnetic field environment comprises:
the lower end of the bottom plate is uniformly provided with a plurality of supporting legs, a supporting plate fixedly connected with the supporting legs is horizontally arranged below the bottom plate, and a driving device, a magnetic field control device and a control unit electrically connected with the driving device are arranged on the supporting plate at intervals;
the supporting frame is arranged on the bottom plate, a main shaft parallel to the bottom plate is rotatably arranged on the supporting frame, one end of the main shaft is provided with a motor bearing to be tested, the other end of the main shaft is in transmission connection with the driving device, a laser reflection sheet is arranged on a retainer of the motor bearing to be tested, and a bearing seat matched with an outer ring of the motor bearing to be tested is arranged on the bottom plate;
the magnetic field generator is arranged on the bottom plate, is electrically connected with the magnetic field control device and is used for generating a magnetic field covering the bearing of the motor to be detected;
the temperature sensor is arranged on the bearing seat and used for detecting the temperature of the motor bearing to be detected;
the vibration sensor is arranged on the bearing seat and used for detecting the vibration of the motor bearing to be detected;
and the laser rotating speed sensor is arranged on the bottom plate, and the working end of the laser rotating speed sensor faces the laser reflecting plate. This application has realized the measurement of motor bearing vibration, temperature and holder rotational speed under the controllable magnetic field through setting up bearing frame, magnetic field generator, temperature sensor, vibration sensor and laser speed sensor, simple structure, and it is convenient and the reliability is high to measure.
Furthermore, the bottom plate upper end is equipped with the mounting panel, support frame, bearing frame, magnetic field generator and laser speed sensor.
Further, drive arrangement includes driving motor, connecting axle and fixing base, driving motor sets up in the backup pad upper end, the fixing base sets up in the mounting panel upper end, fixing base and main shaft fixed connection are run through to connecting axle one end, and the other end is equipped with first synchronizing wheel, and the connecting axle rotates with the fixing base to be connected, be equipped with the second synchronizing wheel on driving motor's the output shaft, first synchronizing wheel and second synchronizing wheel pass through the hold-in range and connect. This application driving motor sets up in magnetic field generator below, links with hold-in range through first synchronizing wheel and second synchronizing wheel and transmits power to the main shaft to reduced the influence that the magnetic field produced driving motor, improved measuring accuracy.
Further, the control unit comprises a first single chip microcomputer, and the first single chip microcomputer is electrically connected with the driving motor.
Further, magnetic field generator is including setting up the L shaped plate on the mounting panel and setting up the one-dimensional Helmholtz coil on the vertical end of L shaped plate, one-dimensional Helmholtz coil includes first coil and second coil, first coil and second coil are located the bearing frame left and right sides.
Further, be equipped with the magnetic field intensity measuring apparatu on the L shaped plate, the magnetic field intensity measuring apparatu deviates from the bearing frame setting. Through setting up the magnetic field intensity measuring apparatu, the size of the magnetic field intensity of convenient real-time measurement applyed to be convenient for adjust.
Further, the magnetic field control device comprises a second single chip microcomputer, a power switch, a magnetic field direction control switch, an emergency stop button, a current adjusting knob and a current display screen which are electrically connected in sequence.
In addition, the application also provides a measuring method of the motor bearing measuring device under the controllable magnetic field environment, which comprises the following steps:
the method comprises the following steps: mounting a motor bearing to be tested on a main shaft, and matching a bearing seat with an outer ring of the motor bearing to be tested;
step two: aligning the working end of a laser rotating speed sensor to a laser reflector on a motor bearing retainer to be measured, directly contacting and measuring a temperature sensor and the outer ring of a motor bearing to be measured, and directly contacting and measuring a vibration sensor and the outer ring of the motor bearing to be measured;
step three: controlling the magnetic field intensity and the magnetic field line direction of the magnetic field generator by a magnetic field control device;
step four: the control unit controls the driving device to drive the main shaft to rotate, the laser rotating speed sensor obtains the real-time rotating speed of the retainer of the motor bearing to be detected, and the temperature sensor and the vibration sensor respectively obtain the real-time temperature and vibration change of the motor bearing to be detected.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of FIG. 1 as seen at B;
FIG. 4 is a schematic view of the structure of FIG. 3 as seen at C;
FIG. 5 is a top view of FIG. 1;
fig. 6 is a schematic structural view of the spindle of the present invention.
The labels in the figure are: 1. the landing leg, 2, the bottom plate, 3, laser tachometer, 4, the main shaft, 401, the linkage segment, 402, first changeover portion, 403, first installation segment, 404, the interlude, 405, the second installation segment, 406, the screw thread section, 5, the bearing frame, 6, temperature sensor, 7, the support frame, 8, the shaft coupling, 9, the fixing base, 10, first synchronizing wheel, 11, the hold-in range, 12, the L shaped plate, 13, the magnetic field intensity measuring apparatu, 14, the mounting panel, 1401, the spout, 15, the connecting plate, 1501, the second kidney-shaped through hole, 16, the vibration sensor, 17, the connecting shaft, 18, the backup pad, 19, first singlechip, 20, magnetic field controlling means, 21, driving motor, 22, one-dimensional Helmholtz coil, 2201, first coil, 2202, the second coil, 23, the L shaped support, 2301, the first kidney-shaped through hole, 24, the mounting nut, 25, the second synchronizing wheel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that in the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-6, the present invention provides a motor bearing measuring device under a controllable magnetic field environment, including: the device comprises a bottom plate 2, a support frame 7, a magnetic field generator, a temperature sensor 6, a vibration sensor 16 and a laser rotating speed sensor 3, wherein a plurality of supporting legs 1 are uniformly distributed at the lower end of the bottom plate 2, a supporting plate 18 fixedly connected with the supporting legs 1 is horizontally arranged below the bottom plate 2, and a driving device, a magnetic field control device 20 and a control unit electrically connected with the driving device are arranged on the supporting plate 18 at intervals;
the supporting frame 7 is arranged on the bottom plate 2, the supporting frame 7 is rotatably provided with a main shaft 4 parallel to the bottom plate 2, one end of the main shaft 4 is provided with a motor bearing to be tested, the other end of the main shaft 4 is in transmission connection with a driving device, the driving device is used for driving the main shaft 4 to rotate, a laser reflection sheet is arranged on a holding frame of the motor bearing to be tested, and a bearing seat 5 matched with an outer ring of the motor bearing to be tested is arranged on the bottom plate 2;
the magnetic field generator is arranged on the bottom plate 2 and electrically connected with the magnetic field control device 20 and used for generating a magnetic field covering a motor bearing to be detected, the temperature sensor 6 is arranged on the bearing seat 5 and used for detecting the temperature of the motor bearing to be detected, the vibration sensor 16 is arranged on the bearing seat 5 and used for detecting the vibration of the motor bearing to be detected, and the laser rotating speed sensor 3 is arranged on the bottom plate 2 and the working end faces the laser reflection sheet.
As shown in fig. 1, fig. 2, fig. 3 and fig. 5, a mounting plate 14 is arranged at the upper end of the bottom plate 2, and the support frame 7, the bearing seat 5, the magnetic field generator and the laser rotation speed sensor 3 are all arranged on the mounting plate 14.
Specifically, as shown in fig. 1, fig. 2, fig. 3 and fig. 5, drive arrangement includes driving motor 21, connecting axle 17 and fixing base 9, driving motor 21 sets up in backup pad 18 upper end, fixing base 9 sets up in mounting panel 14 upper end, fixing base 9 and main shaft 4 fixed connection are run through to connecting axle 17 one end, and the other end is equipped with first synchronizing wheel 10, and connecting axle 17 passes through shaft coupling 8 with main shaft 4 to be connected, and connecting axle 17 rotates with fixing base 9 to be connected, be equipped with second synchronizing wheel 25 on driving motor 21's the output shaft, first synchronizing wheel 10 and second synchronizing wheel 25 pass through hold-in range 11 to be connected, the control unit includes first singlechip 19, first singlechip 19 and driving motor 21 electric connection. Driving motor 21 sets up in magnetic field generator below, links with hold-in range 11 through first synchronizing wheel 10 and second synchronizing wheel 25 and transmits power to main shaft 4 to reduced the influence that the magnetic field produced driving motor 21, improved the measuring accuracy, driving motor 21 is servo motor.
More specifically, as shown in fig. 6, the spindle 4 is stepped from the middle to both sides, the spindle 4 sequentially includes a connection section 401, a first transition section 402, a first installation section 403, an intermediate section 404, a second installation section 405 and a threaded section 406 from left to right, the diameters of the connection section 401, the first transition section 402, the first installation section 403 and the intermediate section 404 are sequentially increased, an external thread is arranged on the outer wall of the threaded section 406, the diameters of the intermediate section 404, the second installation section 405 and the threaded section 406 are sequentially decreased, a support bearing is arranged on the support frame 7, an inner ring of the support bearing is arranged on the first installation section 403, the connection section 401 is connected with the connection shaft 17 through a coupling 8, a motor bearing to be tested is arranged on the second installation section 405, the second installation section 405 and the intermediate section 404 form a shaft shoulder, a lock nut matched with the external thread is arranged on the threaded section 406, one end of the motor bearing to be tested is positioned by the shaft shoulder, the other end is positioned by the lock nut, the fixed seat 9, the support frame 7 and the bearing seat 5 are sequentially arranged on the mounting plate 14 from left to right at intervals.
Further, as shown in fig. 1 and 3, the magnetic field generator includes an L-shaped plate 12 provided on the mounting plate 14 and one-dimensional helmholtz coils 22 provided on the vertical ends of the L-shaped plate 12, the one-dimensional helmholtz coil 22 includes a first coil 2201 and a second coil 2202, the first coil 2201 and the second coil 2202 are located on the left and right sides of the bearing block 5, the one-dimensional helmholtz coil 22 is prior art and is not described in detail herein, the magnetic field control device 20 comprises a second single chip microcomputer, a power switch, a magnetic field direction control switch, an emergency stop button, a current adjusting knob and a current display screen which are electrically connected in sequence, wherein the current display screen is used for displaying the current, the current adjusting knob is used for adjusting the current, the magnetic field direction control switch is used for controlling the positive and negative poles of input current so as to change the direction of the magnetic field line. It should be noted that the detailed description of the present application is prior art.
The application also provides a measuring method of the motor bearing measuring device under the controllable magnetic field environment, which comprises the following steps:
the method comprises the following steps: mounting a motor bearing to be tested on a main shaft 4, and matching a bearing seat 5 with an outer ring of the motor bearing to be tested;
step two: aligning the working end of the laser rotating speed sensor 3 to a laser reflector on a bearing holder of a motor to be measured, directly contacting and measuring the temperature sensor 6 with the outer ring of the bearing of the motor to be measured, and directly contacting and measuring the vibration sensor 16 with the outer ring of the bearing to be measured;
step three: the magnetic field intensity and the magnetic field line direction of the magnetic field generator are controlled by a magnetic field control device 20;
step four: the control unit controls the driving device to drive the main shaft 4 to rotate, the laser rotating speed sensor 3 obtains the real-time rotating speed of the retainer of the motor bearing to be detected, and the temperature sensor 6 and the vibration sensor 16 respectively obtain the real-time temperature and vibration change of the motor bearing to be detected.
The measuring device further comprises a data acquisition system, the data acquisition system comprises an NI high-speed data acquisition card, the laser rotating speed sensor 3, the temperature sensor 6 and the vibration sensor 16 are respectively and electrically connected with the NI high-speed data acquisition card, the NI high-speed data acquisition card is electrically connected with a computer, signals of the sensors are acquired by the NI high-speed data acquisition card, data are transmitted to the computer, and the computer is used for displaying results and processing the data.
Of course, the present invention is not limited to the above-described embodiments, and several other embodiments based on the design concept of the present invention are provided below.
For example, in other embodiments, different from the above-described embodiments, as shown in fig. 1, the L-shaped plate 12 is provided with the magnetic field strength measuring instrument 13, the magnetic field strength measuring instrument 13 is disposed away from the bearing housing 5, and the magnetic field strength measuring instrument 13 is disposed to facilitate real-time measurement of the magnitude of the applied magnetic field strength, thereby facilitating adjustment.
For example, in other embodiments, different from the above-described embodiments, the driving motor 21 is disposed in a magnetism-proof box disposed on the support plate 18, and the magnetism-proof box is composed of magnetic conductive sheets, so as to further prevent the influence of the magnetic field on the motor.
For example, in other embodiments, different from the above-described embodiments, as shown in fig. 1 and fig. 2, an L-shaped bracket 23 is provided on the mounting plate 14, a vertical portion of the L-shaped bracket 23 faces the bearing seat 5, the laser rotation speed sensor 3 is provided on the vertical portion of the L-shaped bracket 23, a first kidney-shaped through hole is provided on the vertical portion of the L-shaped bracket 23, a housing of the laser rotation speed sensor 3 is threaded, the laser rotation speed sensor 3 is inserted into the first kidney-shaped through hole 2301 and locked on the vertical portion of the L-shaped bracket 23 by two mounting nuts 24, the laser rotation speed sensor 3 can move up and down along the first kidney-shaped through hole 2301, the first kidney-shaped through hole 2301 is vertically provided, the mounting nut 24 is in threaded connection with the housing of the laser rotation speed sensor 3, the laser rotation speed sensor 3 is a ROLS laser photoelectric rotation speed sensor, the measurement accuracy is high, the size is small, the ROLS laser photoelectric rotation speed sensor is prior art and is not described in detail herein.
Specifically, two parallel sliding grooves 1401 are arranged on the mounting plate 14, the cross sections of the sliding grooves 1401 are in a convex shape, a connecting plate 15 is arranged on the mounting plate 14, the connecting plate 15 is connected with the mounting plate 14 through screws and nuts, the screws are in a T shape and matched with the convex sliding grooves 1401, the screws can slide in the sliding grooves 1401 along the length direction of the sliding grooves 1401, and when the screws are locked, the screws are locked through the nuts; the connection mode of the bearing seat 5, the support frame 7, the fixing seat 9 and the mounting plate 14 is the same as that of the connecting plate 15, the bearing seat 5, the support frame 7, the fixing seat 9 and the mounting plate 14 are respectively connected with the mounting plate 14 through screws and nuts, and the bearing seat 5, the support frame 7 and the fixing seat 9 are all in a convex shape.
In addition, the connecting plate 15 is connected with the horizontal end of the L-shaped support 23 through a positioning bolt and a positioning nut, a second waist-shaped through hole 1501 used for the positioning bolt to pass through is formed in the connecting plate 15, the bolt can move left and right along the length direction of the second waist-shaped through hole 1501, and through the arrangement of the first waist-shaped through hole 2301 and the second waist-shaped through hole 1501, the laser rotating speed sensor 3 is convenient to adjust the height up and down and adjust the left and right directions, so that the adjustment is convenient, and the flexibility is strong.
For another example, in another embodiment, different from the above-described embodiment, the bearing seat 5 is provided with a first through hole for passing the detection end of the temperature sensor 6, and the bearing seat 5 is further provided with a second through hole for passing the detection end of the vibration sensor 16.
This application applys controllable magnetic field to being surveyed motor bearing through magnetic field generator, magnetic field controlling means 20 can control magnetic field generator's magnetic field intensity size and magnetic field line direction, drive the motor bearing operation that awaits measuring on main shaft 4 through drive arrangement, vibration sensor 16 measures the motor bearing vibration that awaits measuring, temperature sensor 6 measures the motor bearing temperature that awaits measuring, laser speed sensor 3 measures the motor bearing holder rotational speed that awaits measuring, thereby realize motor bearing vibration under the controllable magnetic field, the measurement of temperature and holder rotational speed, this application can the vibration of motor bearing under the controllable magnetic field of accurate measurement, the change of temperature and holder rotational speed, thereby the degree of influence of evaluation magnetic field environment to motor bearing operation performance is big or small, this application simple structure, it is convenient to measure, high reliability.
It should be noted that the above embodiments are only for illustrating the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the present invention.
Claims (8)
1. A motor bearing measuring device under controllable magnetic field environment, characterized by that includes:
the magnetic field control device comprises a bottom plate (2), wherein a plurality of supporting legs (1) are uniformly distributed at the lower end of the bottom plate (2), a supporting plate (18) fixedly connected with the supporting legs (1) is horizontally arranged below the bottom plate (2), and a driving device, a magnetic field control device (20) and a control unit electrically connected with the driving device are arranged on the supporting plate (18) at intervals;
the device comprises a supporting frame (7) arranged on a bottom plate (2), wherein a main shaft (4) parallel to the bottom plate (2) is rotatably arranged on the supporting frame (7), a motor bearing to be tested is arranged at one end of the main shaft (4), the other end of the main shaft is in transmission connection with a driving device, a laser reflection sheet is arranged on a retainer of the motor bearing to be tested, and a bearing seat (5) matched with the outer ring of the motor bearing to be tested is arranged on the bottom plate (2);
the magnetic field generator is arranged on the bottom plate (2), is electrically connected with the magnetic field control device (20) and is used for generating a magnetic field covering a bearing of the motor to be detected;
the temperature sensor (6) is arranged on the bearing seat (5) and used for detecting the temperature of the motor bearing to be detected;
the vibration sensor (16) is arranged on the bearing seat (5) and used for detecting the vibration of the motor bearing to be detected;
and the laser rotating speed sensor (3) is arranged on the bottom plate (2) and the working end faces the laser reflecting plate.
2. The motor bearing measuring device under the controllable magnetic field environment of claim 1, characterized in that: the device is characterized in that a mounting plate (14) is arranged at the upper end of the bottom plate (2), and the support frame (7), the bearing seat (5), the magnetic field generator and the laser rotating speed sensor (3) are arranged on the support frame.
3. The motor bearing measuring device under the controllable magnetic field environment of claim 2, characterized in that: drive arrangement includes driving motor (21), connecting axle (17) and fixing base (9), driving motor (21) set up in backup pad (18) upper end, fixing base (9) set up in mounting panel (14) upper end, connecting axle (17) one end is run through fixing base (9) and main shaft (4) fixed connection, and the other end is equipped with first synchronizing wheel (10), and connecting axle (17) rotate with fixing base (9) and are connected, be equipped with second synchronizing wheel (25) on the output shaft of driving motor (21), first synchronizing wheel (10) and second synchronizing wheel (25) are connected through hold-in range (11).
4. The device for measuring the bearing of the motor in the controllable magnetic field environment according to claim 3, is characterized in that: the control unit comprises a first single chip microcomputer (19), and the first single chip microcomputer (19) is electrically connected with a driving motor (21).
5. The motor bearing measuring device under the controllable magnetic field environment of claim 2, characterized in that: the magnetic field generator comprises an L-shaped plate (12) arranged on a mounting plate (14) and a one-dimensional Helmholtz coil (22) arranged at the vertical end of the L-shaped plate (12), the one-dimensional Helmholtz coil (22) comprises a first coil (2201) and a second coil (2202), and the first coil (2201) and the second coil (2202) are located on the left side and the right side of a bearing seat (5).
6. The device for measuring the bearing of the motor in the controllable magnetic field environment according to claim 5, is characterized in that: and a magnetic field intensity measuring instrument (13) is arranged on the L-shaped plate (12), and the magnetic field intensity measuring instrument (13) deviates from the bearing seat (5).
7. The motor bearing measuring device under the controllable magnetic field environment of claim 1, characterized in that: the magnetic field control device (20) comprises a second single chip microcomputer, a power switch, a magnetic field direction control switch, an emergency stop button, a current adjusting knob and a current display screen which are electrically connected in sequence.
8. The measuring method of the motor bearing measuring device under the controlled magnetic field environment according to any one of claims 1 to 7, characterized by comprising the following steps:
the method comprises the following steps: mounting a motor bearing to be tested on a main shaft (4), and matching a bearing seat (5) with an outer ring of the motor bearing to be tested;
step two: aligning the working end of a laser rotating speed sensor (3) to a laser reflector on a bearing retainer of a motor to be measured, directly contacting and measuring a temperature sensor (6) with the outer ring of the bearing of the motor to be measured, and directly contacting and measuring a vibration sensor (16) with the outer ring of the bearing to be measured;
step three: the magnetic field intensity and the magnetic field line direction of the magnetic field generator are controlled by a magnetic field control device (20);
step four: the control unit controls the driving device to drive the main shaft (4) to rotate, the laser rotating speed sensor (3) obtains the real-time rotating speed of the retainer of the motor bearing to be detected, and the temperature sensor (6) and the vibration sensor (16) respectively obtain the real-time temperature and vibration change of the motor bearing to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210150404.3A CN114362419B (en) | 2022-02-18 | 2022-02-18 | Motor bearing measuring device and method under controllable magnetic field environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210150404.3A CN114362419B (en) | 2022-02-18 | 2022-02-18 | Motor bearing measuring device and method under controllable magnetic field environment |
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| CN114362419A true CN114362419A (en) | 2022-04-15 |
| CN114362419B CN114362419B (en) | 2023-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1628142A1 (en) * | 1988-04-19 | 1991-02-15 | Харьковский политехнический институт им.В.И.Ленина | Test set for bearing assemblies of electric motors |
| JP2010175511A (en) * | 2009-02-02 | 2010-08-12 | Ntn Corp | Inspection method and inspection apparatus |
| CN104165768A (en) * | 2014-09-04 | 2014-11-26 | 大连理工大学 | Bearing integrated dynamic performance test device and method |
| CN105372069A (en) * | 2015-12-01 | 2016-03-02 | 大连工业大学 | Main bearing reduced scale performance test bench of large wind turbine |
| CN109900475A (en) * | 2017-12-08 | 2019-06-18 | 株式会社日立大厦系统 | Bearing check device |
| CN212321072U (en) * | 2020-06-05 | 2021-01-08 | 中国科学院金属研究所 | Bearing service performance and life testing device |
| CN113834653A (en) * | 2020-06-05 | 2021-12-24 | 中国科学院金属研究所 | Bearing test rack integration drive arrangement |
| CN215641768U (en) * | 2021-07-01 | 2022-01-25 | 河南师范大学 | Measuring device for magnetic field of (anti-) Helmholtz coil |
-
2022
- 2022-02-18 CN CN202210150404.3A patent/CN114362419B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1628142A1 (en) * | 1988-04-19 | 1991-02-15 | Харьковский политехнический институт им.В.И.Ленина | Test set for bearing assemblies of electric motors |
| JP2010175511A (en) * | 2009-02-02 | 2010-08-12 | Ntn Corp | Inspection method and inspection apparatus |
| CN104165768A (en) * | 2014-09-04 | 2014-11-26 | 大连理工大学 | Bearing integrated dynamic performance test device and method |
| CN105372069A (en) * | 2015-12-01 | 2016-03-02 | 大连工业大学 | Main bearing reduced scale performance test bench of large wind turbine |
| CN109900475A (en) * | 2017-12-08 | 2019-06-18 | 株式会社日立大厦系统 | Bearing check device |
| CN212321072U (en) * | 2020-06-05 | 2021-01-08 | 中国科学院金属研究所 | Bearing service performance and life testing device |
| CN113834653A (en) * | 2020-06-05 | 2021-12-24 | 中国科学院金属研究所 | Bearing test rack integration drive arrangement |
| CN215641768U (en) * | 2021-07-01 | 2022-01-25 | 河南师范大学 | Measuring device for magnetic field of (anti-) Helmholtz coil |
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| CN114362419B (en) | 2023-08-25 |
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