CN114485977A - Simulation device and method for measuring temperature distribution of motor bearing - Google Patents
Simulation device and method for measuring temperature distribution of motor bearing Download PDFInfo
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- CN114485977A CN114485977A CN202111625869.1A CN202111625869A CN114485977A CN 114485977 A CN114485977 A CN 114485977A CN 202111625869 A CN202111625869 A CN 202111625869A CN 114485977 A CN114485977 A CN 114485977A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
Abstract
The invention discloses a simulation device and a method for measuring the temperature distribution of a motor bearing, wherein the simulation device comprises a fixed seat (1), a simulation lower machine base (2) is arranged on the fixed seat (1), bearing chambers (4) are respectively arranged at two ends of the simulation lower machine base (2), a simulation upper machine base (3) is arranged between the bearing chambers (4) at two sides, a tested bearing (7) is arranged in the bearing chamber (4) through a simulation component I (5) and a simulation component II (6), a rotating shaft (8) is arranged between the tested bearings (7) at two sides, a simulation rotor (9) is arranged on the rotating shaft (8), and one end of the rotating shaft (8) penetrates through the bearing chamber (4) at one side and then is connected with an output shaft of a driving motor (12) through a coupler (11). According to the invention, the implementation method of bearing temperature and load regulation under different working conditions is simulated by the simulation measurement method of bearing temperature distribution, so that temperature distribution data near the motor bearing can be accurately acquired.
Description
Technical Field
The invention relates to the technical field of rail traction motor bearing testing, in particular to a simulation device and method for measuring temperature distribution of a motor bearing.
Background
The bearing of the motor is an important structural component of the motor, and in the operation of the motor, the bearing supports the weight of a mechanical rotating body (rotor) of the motor, and in order to reduce the friction coefficient in the movement process, the bearing of the motor generally needs to be provided with a good lubricating system. In the process of high-speed operation of the motor rotor, heat is inevitably generated, so that the temperature of a motor bearing is increased. If the temperature of the bearing exceeds a certain limit value, parameters such as the fit size, the lubrication state, the friction coefficient and the like of the bearing part can be influenced in the high-speed operation process, potential safety hazards of faults such as bearing lubrication failure, mechanical friction, locking, stripping and the like exist, serious consequences are caused, and life and property losses are formed.
At present, in the field of rail transit traction motors, particularly traction motors of high-speed motor train units, the condition monitoring of bearings in motor application is safe for the whole train application, so that the bearing fault is early warned in advance, and the occurrence of large safety faults can be avoided. In specific implementation, temperature sensors (PT 100 or PT1000 platinum thermal resistance) are arranged at bearing parts at two ends of the traction motor, and temperature monitoring is implemented. The network monitoring system of the vehicle monitors and judges the bearing temperature of the traction motor, and when the bearing temperature is found to exceed a certain range, set early warning and safety protection measures such as deceleration running or parking check are implemented.
In the prior measurement of the bearing temperature, the temperature value near the motor bearing is mainly read by a temperature sensor; in the motor temperature rise test, a method of pasting PT100 or an infrared thermometer is adopted, bearing temperature detection points are added to measure the temperature of the temperature bearing, and empirical data of a specific position near the bearing are obtained. There are the following disadvantages: the bearing temperature sensor set in the first embodiment can measure only the temperature of the portion, and is deviated from the temperature of the bearing itself, and the specific deviation degree is not clear. Secondly, the test working condition is single, the measured temperature coverage range is small, and the actual bearing temperature of the motor in operation is difficult to represent. Increased temperature test points are generally far away from the inside of the bearing, the bearing temperature test points are not arranged on bearing assembly parts, heat conduction needs to be measured through two or even more than two parts, the numerical value of the temperature sensor is more inaccurate than that of a set temperature sensor, and the work of formulating the bearing temperature protection value is difficult to guide.
However, the traction motors of the vehicles have different structures, the bearings are arranged and operated under different working conditions, and the positions where the temperature sensors are arranged and the proximity degree of the temperature sensors to the bearings are different. As shown in fig. 1, the assembly diagram of the sensor for detecting the temperature of the bearing by the rail transit traction motor is shown, and in practical application, a certain distance exists between the temperature sensor and the bearing, and the actual temperature of the bearing cannot be accurately measured, so that a certain deviation exists between the temperature in practical use of the bearing and the temperature value detected by the sensor, and no corresponding detection data is supported, which brings a certain difficulty to setting a bearing temperature protection limit value, and also causes a certain hidden danger to the safe operation of the vehicle traction motor.
Disclosure of Invention
The bearing temperature detection of the rail transit vehicle traction motor mainly adopts a PT100 (or PT 1000) platinum thermal resistance temperature sensor to implement temperature detection. The resistance value of the PT100 (or PT 1000) platinum thermal resistance temperature sensor is converted into a numerical value reflecting the bearing temperature through application software, and when the temperature exceeds a set protection value, the numerical value is transmitted to a driver (or a train traction control system) and guides the driver to carry out protective operation measures, so that the aim of ensuring the safe operation of a train is fulfilled. The invention aims to provide a novel distribution mode and a simulation device for measuring the temperature of a motor bearing.
The invention is realized by adopting the following technical scheme:
a simulation device for measuring the temperature distribution of a motor bearing comprises a fixed seat, wherein a simulation lower base is arranged on the fixed seat, bearing chambers are respectively arranged at two ends of the simulation lower base, a simulation upper base is arranged between the bearing chambers at two sides, a measured bearing is arranged in each bearing chamber through a simulation part I and a simulation part II, a rotating shaft is arranged between the measured bearings at two sides, a simulation rotor is arranged on the rotating shaft, and one end of the rotating shaft penetrates out of the bearing chamber at one side and then is connected with an output shaft of a driving motor through a coupler; the fixed seat is provided with a hot air supply device, and an air outlet of the hot air supply device is opposite to the bearing chamber on the other side; the simulation upper machine base is provided with a simulation load, and the simulation load acts on the simulation rotor; and a plurality of temperature sensors for measuring temperature distribution at different positions around the bearing are arranged on the simulation component I and the simulation component II.
More preferably, the measuring points are arranged in the same radial plane of the measured bearing, the distance between the probe of the temperature sensor and the starting point of the outer ring of the bearing is 0mm, and in the range of 0-50 mm (the same applies below), the measuring points are arranged at intervals of 5mm, 11 measuring points are arranged in total, and one temperature sensor is inserted in each measuring point. Or, the measuring points are positioned in different radial planes of the measured bearing, the distance from the probe of the temperature sensor to the starting point of the outer ring of the bearing is 0mm, one measuring point is arranged at intervals of 5mm, 11 measuring points are arranged in total (namely 11 measuring points are respectively positioned in different radial planes), and one temperature sensor is inserted into each measuring point. Or, the same arrangement mode of the measuring points is set in different radial planes of the measured bearing, namely, the distance between the probe of the temperature sensor and the starting point of the outer ring of the bearing is 0mm in each radial plane, one measuring point is set at intervals of 5mm, 11 measuring points are arranged in total, and one temperature sensor is inserted in each measuring point. The 11 measuring points located in the same radial plane or different radial planes are uniformly arranged along the circumference.
More preferably, 1 measurement point is provided at the bearing inner race position of the measured bearing, and one temperature sensor is inserted at the measurement point.
Further preferably, the measured bearing is respectively provided with temperature measuring points along different axial heights of the outer ring of the measured bearing, and each temperature measuring point is inserted with one temperature sensor.
In addition, in order to achieve the aim of the invention, the invention also provides a method for measuring the temperature distribution of the motor bearing according to the simulation device, wherein the driving motor is used for providing the rotating speed of the measured bearing, the simulation load is used for adjusting the load of the rotor, the hot air blowing device is used for simulating and providing the actual working environment temperature of the bearing, and the lubrication oil injection system is used for simulating the state of the bearing lubrication system.
Numbering the set temperature sensors, and taking the data of the temperature sensors on the surface of the outer ring of the bearing as a detection reference; simulating different application working conditions by adjusting the parameter combination of four variables of the bearing rotating speed, the rotor load, the grease adding amount and the hot air supply temperature, detecting the numerical value of each temperature sensor in real time, and recording and drawing a curve; when the temperature of the outer ring of the bearing reaches the designed limit of the bearing, stopping the test; setting test time according to actual operation conditions; and finally, measuring the actual temperature state of the motor bearing and the temperatures of different parts around the bearing under different working conditions, thereby definitely grasping the distribution conditions of the temperatures of different positions near the outer ring of the bearing, accurately judging the actual temperature of the bearing reflected by the detection data of the temperature sensor, and providing an accurate criterion for the protection logic of the safe operation of the vehicle.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention provides a method for measuring the temperature distribution of a motor bearing, which can simulate the operating condition of a motor and measure the actual temperature state of the motor bearing and the temperature of different parts around the bearing under different operating conditions, thereby clearly mastering the temperature distribution conditions of different positions.
2. According to the invention, by measuring the temperature distribution condition of the motor bearing, the actual temperature of the bearing reflected by the detection data of the temperature sensor can be accurately judged according to the measured temperature data of the bearing, and an accurate criterion is provided for the protection logic of the safe operation of the vehicle.
3. The method for adjusting the temperature of the bearing provided by the invention has a strong guiding significance for simulating the influence of the bearing operating condition and the maintenance method on the bearing temperature, and further, detection data with a guiding value can be obtained through a simulation test to support theoretical research.
The invention has reasonable design, can accurately acquire the temperature distribution near the bearing of the motor (especially a rail transit vehicle traction motor) by designing the simulation device and the method for measuring the temperature distribution of the motor bearing, especially accurately measure the data of the temperature near the bearing under different working conditions, and definitely determine the deviation degree of the value detected by the set temperature sensor and the actual temperature of the bearing according to the distribution condition, thereby formulating the more accurate bearing temperature protection value and control strategy, providing actual data support for the safe operation of the vehicle and having good actual application value.
Drawings
Fig. 1 is a schematic view showing a conventional method for measuring a bearing temperature of a motor.
In fig. 1: 101-measured temperature sensor, 102-mounting component I, 103-mounting component II, 104-actual bearing.
Fig. 2 shows a schematic diagram of a simulation device for measuring the temperature of a bearing of a motor according to the present invention.
In fig. 2: the method comprises the following steps of 1-a fixed seat, 2-a simulated lower machine base, 3-a simulated upper machine base, 4-a bearing chamber, 5-a simulated component I, 6-a simulated component II, 7-a measured bearing, 8-a rotating shaft, 9-a simulated rotor, 10-a simulated load, 11-a coupler, 12-a driving motor, 13-hot air supply equipment and 14-a temperature sensor.
Fig. 3 is a schematic view showing the distribution of temperature measurement points in a radial plane around the bearing.
In fig. 3: i-a first bearing outer ring measuring point, II-a second bearing outer ring measuring point, III-a third bearing outer ring measuring point, IV-a fourth bearing outer ring measuring point, V-a fifth bearing outer ring measuring point, VI-a sixth bearing outer ring measuring point, VII-a seventh bearing outer ring measuring point, VIII-a eighth bearing outer ring measuring point, IX-a ninth bearing outer ring measuring point, X-a tenth bearing outer ring measuring point, XI-a eleventh bearing outer ring measuring point, i-a bearing inner ring measuring point.
Fig. 4 shows that the bearing under test can have a plurality of measuring points arranged along its axial direction on a plurality of radial surfaces, in each of which a plurality of measuring points can be provided.
In fig. 4: a. b, c, d, e each represent the distribution position of the radial plane.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
A simulation device for measuring the temperature distribution of a motor bearing comprises a bearing chamber, a fixed seat, a rotor model, a simulation load, lubricating grease, a temperature sensor (a platinum thermal resistor such as PT100 or PT 1000), hot air blowing equipment and the like.
As shown in fig. 2, a simulated lower base 2 is provided on the fixing base 1, bearing chambers 4 are respectively provided at two ends of the simulated lower base 2, and a simulated upper base 3 is provided between the bearing chambers 4 at two sides, that is, one bearing chamber 4 is provided at two ends of the simulated upper and lower bases respectively through bolts. The bearing chamber 4 is provided with a bearing 7 to be measured (shown in figure 3) through a simulation component I5 and a simulation component II 6. According to the actual motor bearing structure, a corresponding bearing chamber and a simulation engine base are manufactured, and a lubricating and oiling system is required to be arranged on a bearing installation part such as the bearing chamber, wherein the lubricating and oiling system comprises a grease seal labyrinth, an oil storage chamber, an oil filling hole and an oil nozzle and is used for injecting lubricating grease into a bearing, so that the lubricating state of the bearing is simulated by adjusting the quantity of the lubricating grease, and the influence degree of the grease quantity on the temperature of the bearing is detected. A rotating shaft 8 is arranged between the measured bearings 7 at two sides, a simulation rotor 9 is arranged on the rotating shaft 8, and one end of the rotating shaft 8 penetrates through the bearing chamber 4 at one side and then is connected with an output shaft of a driving motor 12 through a coupler 11; the fixed seat 1 is provided with a hot air supply device 13, and an air outlet of the hot air supply device 13 is opposite to the bearing chamber 4 on the other side. The upper simulation engine base 3 is provided with a simulation load 10, and the simulation load 10 acts on the simulation rotor 9.
A plurality of temperature sensors 14 for measuring temperature distribution at different positions around the bearing 7 are mounted on the simulation component I5 and the simulation component II 6, and the temperature sensors 14 are PT100 or PT1000 platinum thermal resistance temperature sensors. And the sensor setting among different materials is fully considered, namely the positions of the temperature probes are distributed on the simulation component I and the simulation component II, so that the materials of the simulation component I and the simulation component II are the same as the practical application materials. Temperature measuring holes are respectively arranged in the radial direction and the axial direction of the bearing mounting part, the set position of each hole comprises the set position of an actual temperature sensor, and meanwhile, the sensor depth fully considers the positions with different depths to obtain the temperature distribution around the bearing. The temperature sensors are positioned in the same radial plane of the measured bearing, the distance from the probe of each temperature sensor to the starting point of the outer ring of the bearing is 0mm, a plurality of measuring points are arranged along the circumference at the same or different intervals, and each measuring point is inserted with one temperature sensor. This embodiment illustrates that 11 measurement points are arranged outside the bearing, but of course, each radial surface is not necessarily 11 measurement points, and the specific number of measurement points should be related to the size of the component and the actual requirements. As shown in fig. 3, the distance between the probe and the outer ring of the bearing after the temperature sensor is installed, which is a measurement point set at intervals of 5mm with the probe of the temperature sensor 14 being 0mm from the starting point of the outer ring of the bearing, in the same radial plane of the measured bearing 7, includes: 0mm and 5mm … … 50mm, and a total of 11 measurement points (I and II … … XI in the figure) are arranged, each measurement point is inserted with a temperature sensor 14, and the 11 measurement points positioned in the same radial plane are arranged along the circumference (the specific points can be determined according to the structure and are uniformly or non-uniformly arranged). Further, 1 measurement point (i in the figure) is provided at the bearing inner ring position of the measured bearing 7, and one temperature sensor 14 is inserted at the measurement point.
Furthermore, the measuring points are positioned in different radial planes of the measured bearing 7, the distance from the probe of the temperature sensor 14 to the starting point of the outer ring of the bearing is 0mm, the measuring points are arranged at intervals of 5mm, in the range of 0-50 mm, 11 measuring points are arranged in total, namely 11 measuring points are positioned in different radial planes, and each measuring point is inserted with one temperature sensor 14.
Furthermore, the same arrangement of the measuring points is arranged in different radial planes of the measured bearing 7, namely, each radial plane is 0mm from the starting point of the outer ring of the bearing by the probe of the temperature sensor 14, one measuring point is arranged at intervals of 5mm, 11 measuring points are arranged in total (for example, 11 measuring points are respectively arranged in three radial planes at two sides and the middle of the bearing), and each measuring point is inserted with one temperature sensor 14.
In addition, temperature measurement points are respectively arranged at different heights in the axial direction of the outer ring of the measured bearing 7, and one temperature sensor 14 is inserted into each temperature measurement point.
The simulation method for measuring the temperature distribution of the motor bearing by using the device comprises the following steps: the driving motor 12 is used for providing the rotating speed of the detected bearing 7, the simulation load 10 is used for adjusting the rotor load, and the hot air blowing device 13 is used for simulating and providing the actual working environment temperature of the bearing; the lubrication oil injection system is used for simulating the state of bearing lubricating grease, lubricating grease oil is injected into the bearing, the bearing lubrication state is simulated by adjusting the quantity of the lubricating grease, and the influence degree of the grease quantity on the adjustment of the bearing temperature is detected.
The set temperature sensors are numbered, and the data of the temperature sensors on the surface of the outer ring of the bearing are used as detection references. Simulating different application working conditions by adjusting the parameter combination of four variables of the bearing rotating speed, the rotor load, the grease adding amount and the hot air supply temperature, detecting the numerical value of each temperature sensor in real time, and recording and drawing a curve; when the temperature of the outer ring of the bearing reaches the designed limit of the bearing, stopping the test; setting test time according to actual operation conditions; and finally, measuring the actual temperature state of the motor bearing and the temperatures of different parts around the bearing under different working conditions, thereby definitely grasping the distribution conditions of the temperatures of different positions outside the bearing, accurately judging the actual temperature of the bearing reflected by the detection data of the temperature sensor, and providing an accurate criterion for the protection logic of the safe operation of the vehicle.
When specific measurement is carried out, different test working conditions are set by combining the practical application condition of the motor, and the load simulation of the motor is applied through a simulation load applied to a rotor model; the bearing temperature can be adjusted by adjusting the rotating speed of the bearing, the adding amount of grease and hot air supply equipment for simulating the heat radiation in the motor at a specific position.
The simulation device for measuring the bearing temperature distribution and the setting method for measuring the temperature simulate the implementation method for regulating the bearing temperature and the load under different working conditions, and can realize accurate acquisition of temperature distribution data near the bearing of a motor (especially a rail transit vehicle traction motor).
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the detailed description is made with reference to the embodiments of the present invention, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which shall be covered by the claims of the present invention.
Claims (10)
1. A simulation device for measuring the temperature distribution of a motor bearing is characterized in that: the device comprises a fixed seat (1), wherein a lower simulation engine base (2) is arranged on the fixed seat (1), bearing chambers (4) are respectively arranged at two ends of the lower simulation engine base (2), an upper simulation engine base (3) is arranged between the bearing chambers (4) at two sides, a tested bearing (7) is arranged in each bearing chamber (4) through a simulation component I (5) and a simulation component II (6), a rotating shaft (8) is arranged between the tested bearings (7) at two sides, a simulation rotor (9) is arranged on each rotating shaft (8), and one end of each rotating shaft (8) penetrates through the bearing chamber (4) at one side and then is connected with an output shaft of a driving motor (12) through a coupler (11); a hot air supply device (13) is arranged on the fixed seat (1), and an air outlet of the hot air supply device (13) is opposite to the bearing chamber (4) on the other side; the simulation upper base (3) is provided with a simulation load (10), and the simulation load (10) acts on the simulation rotor (9); and a plurality of temperature sensors (14) for measuring temperature distribution at different positions around the bearing (7) are arranged on the simulation component I (5) and the simulation component II (6).
2. A simulation apparatus for measuring a temperature distribution of a bearing of an electric machine according to claim 1, wherein: the temperature sensors are positioned in the same radial plane of the measured bearing (7), the distance from the probe of each temperature sensor (14) to the starting point of the outer ring of the bearing is 0mm, a plurality of measuring points are arranged along the circumference at the same or different intervals, and each measuring point is inserted with one temperature sensor (14).
3. A simulation apparatus for measuring a temperature distribution of a bearing of an electric machine according to claim 2, wherein: the spacing distance is 5mm, and 11 measurement points are arranged in total within the range of 0-50 mm of the vertical distance.
4. A simulation apparatus for measuring a temperature distribution of a bearing of a motor according to claim 2, wherein: the bearing inner ring position of the bearing (7) to be measured is provided with 1 measuring point, namely, one temperature sensor (14) is inserted into the measuring point.
5. A simulation apparatus for measuring a temperature distribution of a bearing of an electric machine according to claim 1, wherein: the temperature sensors are positioned in different radial surfaces of the measured bearing (7), the distance from the probe of each temperature sensor (14) to the starting point of the outer ring of the bearing is 0mm, a plurality of measuring points are arranged along the circumference at the same or different intervals, and each measuring point is inserted with one temperature sensor (14).
6. A simulation apparatus for measuring a temperature distribution of a bearing of an electric machine according to claim 1, wherein: the same arrangement mode of the measuring points is arranged in different radial planes of the measured bearing (7), namely, the distance from the probe of the temperature sensor (14) to the starting point of the outer ring of the bearing in each radial plane is 0mm, a plurality of measuring points are arranged along the circumference at the same or different intervals, and each measuring point is inserted with one temperature sensor (14).
7. A simulation apparatus for measuring a temperature distribution of a bearing of an electric machine according to any one of claims 2 to 6, wherein: the bearing (7) to be measured is respectively provided with temperature measuring points along different axial heights of the outer ring of the bearing, and each temperature measuring point is inserted with a temperature sensor (14).
8. A simulation apparatus for measuring a temperature distribution of a bearing of an electric machine according to claim 1, wherein: the temperature sensor (14) is a PT100 or PT1000 platinum thermal resistance temperature sensor.
9. A simulation apparatus for measuring a temperature distribution of a bearing of an electric machine according to claim 1, wherein: and a lubricating and oiling system is arranged at the bearing mounting part of the bearing chamber (4).
10. A simulation method for determining a temperature distribution of a bearing of an electric machine according to any one of claims 1 to 9, characterized in that: the driving motor (12) is used for providing the rotating speed of the bearing (7) to be tested, the simulation load (10) is used for adjusting the rotor load, and the hot air blowing equipment (13) is used for simulating and providing the actual working environment temperature of the bearing; the lubrication system is used for simulating the state of bearing lubricating grease;
numbering the set temperature sensors, and taking the data of the temperature sensors on the surface of the outer ring of the bearing as a detection reference; simulating different application working conditions by adjusting the parameter combination of four variables of the bearing rotating speed, the rotor load, the grease adding amount and the hot air supply temperature, detecting the numerical value of each temperature sensor in real time, and recording and drawing a curve; when the temperature of the outer ring of the bearing reaches the designed limit of the bearing, stopping the test; setting test time according to actual operation conditions; and finally, measuring the actual temperature state of the motor bearing and the temperatures of different parts around the bearing under different working conditions, thereby definitely grasping the distribution conditions of the temperatures of different positions outside the bearing, accurately judging the actual temperature of the bearing reflected by the detection data of the temperature sensor, and providing an accurate criterion for the protection logic of the safe operation of the vehicle.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111625869.1A CN114485977A (en) | 2021-12-29 | 2021-12-29 | Simulation device and method for measuring temperature distribution of motor bearing |
| PCT/CN2022/139112 WO2023125022A1 (en) | 2021-12-29 | 2022-12-14 | Simulation apparatus and method for measuring temperature distribution of motor bearing, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111625869.1A CN114485977A (en) | 2021-12-29 | 2021-12-29 | Simulation device and method for measuring temperature distribution of motor bearing |
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| CN114485977A true CN114485977A (en) | 2022-05-13 |
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| CN202111625869.1A Pending CN114485977A (en) | 2021-12-29 | 2021-12-29 | Simulation device and method for measuring temperature distribution of motor bearing |
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| WO (1) | WO2023125022A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125022A1 (en) * | 2021-12-29 | 2023-07-06 | 中车永济电机有限公司 | Simulation apparatus and method for measuring temperature distribution of motor bearing, and storage medium |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005004862A1 (en) * | 2005-02-02 | 2006-08-10 | Siemens Ag | Method for monitoring the temperature of at least one bearing of an electrical machine, a monitoring device corresponding thereto and an electrical machine having such a monitoring device |
| CN104165768B (en) * | 2014-09-04 | 2017-01-25 | 大连理工大学 | Bearing integrated dynamic performance test device and method |
| CN105699081B (en) * | 2016-01-21 | 2018-07-20 | 湖南科技大学 | Bearing shaft current damages comprehensive characteristic test device |
| CN105486506B (en) * | 2016-01-21 | 2019-03-26 | 湖南科技大学 | A kind of simulated machine bearing shaft current damage test device |
| CN105486505A (en) * | 2016-01-21 | 2016-04-13 | 湖南科技大学 | Single-pivot double row rolling bearing supporting type rotor comprehensive performance experiment device |
| CN107024353A (en) * | 2017-05-11 | 2017-08-08 | 浙江省机电设计研究院有限公司 | A kind of sealed bearings combination property simulation test machine |
| CN112242780B (en) * | 2020-09-29 | 2022-04-12 | 中车永济电机有限公司 | Permanent magnet synchronous motor with rotor temperature measuring device |
| CN114485977A (en) * | 2021-12-29 | 2022-05-13 | 中车永济电机有限公司 | Simulation device and method for measuring temperature distribution of motor bearing |
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2021
- 2021-12-29 CN CN202111625869.1A patent/CN114485977A/en active Pending
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2022
- 2022-12-14 WO PCT/CN2022/139112 patent/WO2023125022A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125022A1 (en) * | 2021-12-29 | 2023-07-06 | 中车永济电机有限公司 | Simulation apparatus and method for measuring temperature distribution of motor bearing, and storage medium |
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Inventor after: Shang Qianbo Inventor after: Zhang Lei Inventor after: Xue Xiuhui Inventor after: Zhao Yukun Inventor before: Zhang Lei Inventor before: Xue Xiuhui Inventor before: Shang Qianbo Inventor before: Zhao Yukun |
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