Deformation detection device and detection method for a rotor

Abstract

The application discloses a rotor deformation detection device and method, and relates to the technical field of rotor detection. The rotor deformation detection device provided by the application comprises a shell, a detection assembly and a heating assembly are arranged in the shell, the detection assembly comprises a bearing column which is rotatably arranged, a driving module which is used for driving the bearing column to rotate, a detection ring which surrounds the periphery of the bearing column, and a plurality of detection positions which are arranged on the detection ring, a sensing module is arranged on each detection position, the detection ring is concentrically arranged with the bearing column, and the plurality of detection positions are arranged at intervals around the circumference of the detection ring. The plurality of sensing modules on the detection ring of the deformation detection device can detect the deformation of the rotor from the periphery of the rotor, the rotation of the rotor is not disturbed during detection, and the detection precision is high. Meanwhile, the heating assembly can heat the inside of the shell, so that the detection assembly can detect the rotor under high-temperature working conditions, and the detection range is wide.

Description

Technical Field

[0001] The present application relates to the technical field of rotor detection, and in particular to a rotor deformation detection device and method. Background Art

[0002] With the widespread adoption of new energy vehicles, the use of electric motors as their power output components is increasing year by year. The structural strength of a motor's rotor affects its maximum speed, service life, and operating efficiency. Therefore, rotor deformation testing is necessary before motor assembly.

[0003] Existing rotor deformation detection equipment typically uses contact instruments such as dial indicators and micrometers to measure rotor deformation. However, these instruments can interfere with normal rotor operation during testing, leading to measurement errors. Furthermore, existing testing equipment is unable to detect rotors operating under high-temperature conditions. Summary of the Invention

[0004] One purpose of the present application is to overcome the deficiencies of the prior art and provide a rotor deformation detection device with high detection accuracy.

[0005] The present application provides a detection device that adopts the following technical solution:

[0006] A rotor deformation detection device includes a shell, in which a detection component and a heating component are arranged. The detection component includes a rotatable supporting column, a driving module for driving the supporting column to rotate, a detection ring surrounding the circumference of the supporting column, and multiple detection positions arranged on the detection ring, each detection position is respectively provided with a sensor module, the detection ring is concentrically arranged with the supporting column, and the multiple detection positions are arranged at intervals around the circumference of the detection ring.

[0007] By adopting the above technical solution, the multiple sensor modules on the detection ring can detect the deformation of the rotor from the circumferential side of the rotor without interfering with the rotation of the rotor during detection, and the detection accuracy is high; at the same time, the heating component can heat the inside of the shell, so that the detection component can detect the rotor under high temperature conditions, and the detection range is wide.

[0008] Preferably, bearings are respectively provided at both ends of the supporting column, and bearing seats for accommodating the bearings are respectively provided on the opposite sides of the shell, and at least one of the bearings is slidably connected to the corresponding bearing seat.

[0009] By adopting the above technical solution, the bearing can slide relative to the bearing seat when the bearing column is telescopically deformed, thereby preventing the bearing column and the bearing from being stuck relative to each other and affecting the rotation of the rotor.

[0010] Preferably, the bearing seat has a first cavity for accommodating the bearing, the outer wall of the bearing is slidably fitted with the inner wall of the first cavity, and an elastic member is provided on the side of the first cavity away from the bearing column.

[0011] By adopting the above technical solution, the elastic member can be pressed against the bearing, so that the bearing can have sufficient restoring force when the bearing column is deformed by telescopic deformation.

[0012] Preferably, a partition is provided in the shell, and a second chamber for accommodating the detection component and a third chamber for accommodating the heating component are formed on both sides of the partition respectively. The partition is provided with an air blowing port and an air return port arranged up and down, and a first baffle is provided on the partition between the air blowing port and the return air port, and the first baffle is connected to the detection ring.

[0013] By adopting the above technical solution, the first baffle can relatively isolate the gas blown out of the air outlet from the gas flowing back from the return air outlet, so as to prevent the two groups of gases from disturbing each other and affecting the temperature environment in the second chamber.

[0014] Preferably, the detection ring is mounted on the bottom of the second chamber, and a second baffle is provided on the upper part of the second chamber. The first baffle and the second baffle are respectively located on both sides of the air outlet and an air inlet channel is formed therebetween. The first baffle and the bottom wall of the second chamber are respectively located on both sides of the return air outlet and an air outlet channel is formed therebetween.

[0015] Preferably, an arc-shaped air induction plate is provided on the side of the detection ring away from the partition, one end of the air induction plate is connected to the second baffle, and the other end is connected to the bottom wall of the second chamber. The air induction plate and the detection ring are concentrically arranged and a hot air channel is formed between the two.

[0016] By adopting the above technical solution, the air guide plate can guide the hot air output from the air outlet, so that the hot air can surround the circumference of the detection ring as the rotor rotates, effectively improving the heating uniformity of the rotor.

[0017] Preferably, the detection device also includes a temperature measuring component, which is located on the side of the detection ring close to the partition, and includes a mounting plate provided on the detection ring, a temperature measuring module provided on the mounting plate, and a protective plate connected to the first baffle, and the protective plate includes a first plate body located above the temperature measuring module and a second plate body located between the temperature measuring module and the partition.

[0018] By adopting the above technical solution, the first plate and the second plate can respectively block the top and side of the temperature measurement module to prevent gas from directly flushing the temperature measurement module and affecting the temperature measurement accuracy of the temperature measurement module.

[0019] Preferably, the heating assembly includes a blower and a heating module arranged vertically, the blower is arranged close to the air blowing port, and the heating module is located between the air blowing port and the return air port.

[0020] Another object of the present application is to provide a method for detecting deformation of a rotor.

[0021] A detection method provided in this application adopts the following technical solution:

[0022] A rotor deformation detection method, based on the above-mentioned detection device, includes an elastic deformation detection method, and the elastic deformation detection method includes the following steps:

[0023] Step 1: Mount the rotor to be tested on the support column, start the heating assembly and the drive module, and the drive module drives the rotor to be tested to rotate at an initial speed of R. The sensor module outputs the distance parameter X (R) of the detection position at this time.

[0024] Step 2: The drive module drives the rotor to be tested to rotate at a speed of Rn. The sensor module outputs the distance parameter X(Rn) of the detection position at this time. Then the drive module drives the rotor to be tested to rotate at the initial speed R again. The sensor module outputs the distance parameter X(Rn-R) of the detection position at this time, where Rn is greater than R.

[0025] Step 3: Calculate the elastic deformation V(Rn) of the rotor to be tested, V(Rn)=X(Rn)-X(Rn-R).

[0026] By adopting the above technical solution, the sensing module can detect the deformation of the rotor at different speeds without interfering with the rotation of the rotor during detection, and the detection accuracy is high. At the same time, the heating component can heat the inside of the shell, so that the detection component can detect the rotor under high-temperature conditions, with a wide detection range. Moreover, when calculating the elastic deformation of the rotor, X (Rn-R) is used for calculation, which can ensure that the detection center of the rotor at high and low speeds is consistent, effectively improving the accuracy of the measured elastic deformation.

[0027] Preferably, the detection method further includes a plastic deformation detection method, and the plastic deformation detection method includes:

[0028] Step a: A high-precision solid rotor is mounted on the support column. The driving module drives the solid rotor to rotate at an initial speed R, and the sensing module outputs the distance parameter H (R) between the detection position and the solid rotor at this time.

[0029] Step b: the driving module drives the solid rotor to rotate at a speed of Rn, and then the driving module drives the solid rotor to rotate at the initial speed R again, and the sensing module outputs the distance parameter H (Rn) between the detection position and the solid rotor at this time;

[0030] Step c, calculate the system compensation amount Y(Rn-R), Y(Rn-R)=H(Rn-R)-H(R), and then calculate the plastic deformation amount P(Rn) of the rotor to be tested, P(Rn)=X(Rn-R)-Y(Rn-R).

[0031] By adopting the above technical solution, a system compensation amount is introduced based on the high-temperature deformation of the device when calculating the plastic deformation of the rotor, which effectively improves the accuracy of the measured plastic deformation amount.

[0032] In summary, the present invention includes at least one of the following beneficial technical effects:

[0033] 1. The multiple sensor modules on the detection ring can detect the deformation of the rotor from the circumferential side of the rotor without interfering with the rotation of the rotor, and the detection accuracy is high;

[0034] 2. The heating component can heat the inside of the shell, so that the detection component can detect the rotor under high temperature conditions, with a wide detection range;

[0035] 3. When calculating the elastic deformation of the rotor, X (Rn-R) is used to ensure that the detection center of the rotor at high and low speeds is consistent, effectively improving the accuracy of the measured elastic deformation;

[0036] 4. When calculating the plastic deformation of the rotor, a system compensation is introduced based on the high-temperature deformation of the device, which effectively improves the accuracy of the measured plastic deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic structural diagram of the deformation detection device in Example 1 of the present application;

[0038] Figure 2 This is a left side view of the deformation detection device in Example 1 of the present application;

[0039] Figure 3 yes Figure 2 AA cross-section diagram in;

[0040] Figure 4 is a front view of the deformation detection device in Example 1 of the present application;

[0041] Figure 5 yes Figure 4 BB cross-section diagram in;

[0042] Figure 6 yes Figure 5 Enlarged schematic diagram of point C in FIG.

[0043] Markings in the accompanying drawings:

[0044] 1. Shell; 1a. Partition; 1b. First baffle; 1c. Second baffle; 2. Detection assembly; 2a. Support column; 2b. Drive module; 2c. Detection ring; 2d. Sensor module; 3. Heating assembly; 3a. Blower; 3b. Heating module; 4. Bearing; 5. Bearing seat; 5a. First seat body; 5b. Second seat body; 5c. Third seat body; 6. First chamber; 7. Elastic member; 8. Second chamber; 9. Third chamber; 10. Air outlet; 11. Return air outlet; 12. Air inlet plate; 13. Temperature measurement assembly; 13a. Mounting plate; 13b. Temperature measurement module; 13c. Protective plate; 13c1. First plate body; 13c2. Second plate body; 14. Shell cover; 15. Cooling port; 16. First cooling channel; 17. Second cooling channel; 18. Cooling trough. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-6 The present invention is described in further detail.

[0046] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0047] Example 1: See Figure 1-6 As shown, a rotor deformation detection device is shown, which includes a shell 1, in which a detection component 2 and a heating component 3 are arranged. The detection component 2 and the heating component 3 are arranged along the length direction of the shell 1.

[0048] Combine Figure 3 and Figure 5 As shown, the detection component 2 includes a supporting column 2a that is rotatable around its own axis, a driving module 2b for driving the supporting column 2a to rotate, a detection ring 2c surrounding the circumference of the supporting column 2a, and three detection positions arranged on the detection ring 2c, each detection position is respectively provided with a sensor module 2d, the sensor module 2d is located inside the detection ring 2c and is arranged toward the supporting column 2a, the detection ring 2c is concentrically arranged with the supporting column 2a, and the three detection positions are arranged at intervals around the circumference of the detection ring 2c.

[0049] The housing 1 is fitted with a removable cover 14. The detection ring 2c comprises two relatively removable rings, making it easy to open the cover 14 and detection ring 2c and install the rotor on the support column 2a. The support column 2a extends along the width of the housing 1. The drive module 2b is a motor, whose output shaft is coaxially connected to one end of the support column 2a. There are two detection rings 2c, spaced apart along the length of the support column 2a. The sensor module 2d is a high-temperature-resistant eddy current displacement sensor located at the detection position.

[0050] During testing, the rotor is mounted on the support column 2a. The heating assembly 3 heats the interior of the housing 1 within a temperature range of 0-160°C. The motor drives the support column 2a to rotate at a speed range of 0-20,000 rpm. The six sensor modules 2d on the two detection rings 2c measure the axial and radial distances between the rotor and the detection point at different speeds. This distance between the rotor and the detection point at different speeds can be used to calculate the rotor's deformation at high temperatures and high speeds.

[0051] In this embodiment, combined with Figure 5 As shown, bearings 4 are sleeved on both ends of the support column 2a. Bearing seats 5 for accommodating bearings 4 are provided on both sides of the housing 1 in the width direction. The two bearings 4, one farther from the motor, are slidably connected to the corresponding bearing seat 5. Under high temperature conditions, the support column 2a is prone to expansion and contraction deformation. The bearings 4 can slide relative to the bearing seat 5 when the support column 2a expands and contracts to make way for the expansion and contraction of the support column 2a, preventing the support column 2a and the bearing 4 from getting stuck relative to each other and affecting the rotation of the rotor.

[0052] Combine Figure 6 As shown, the bearing housing 5 contains a first chamber 6 for accommodating the bearing 4. The first chamber 6 is concentric with the bearing housing 5. The outer wall of the one of the two bearings 4 farther from the motor slides with the inner wall of the corresponding first chamber 6. An elastic member 7, a corrugated spring, is located on the side of the first chamber 6 farther from the support column 2a. The elastic member 7 continuously presses against the bearing 4, ensuring sufficient restoring force when the support column 2a deforms.

[0053] In this embodiment, a cooling port 15 is further provided on the bearing seat 5. A first cooling channel 16 is provided in the bearing seat 5 and is connected to the cooling port 15. The first cooling channel 16 extends axially along the bearing seat 5 and its other end is connected to the first chamber 6. The cooling port 15 can output cooling gas, which enters the first chamber 6 through the first cooling channel 16 and cools the bearing 4.

[0054] The bearing seat 5 includes a first seat body 5a and a second seat body 5b that are coaxially arranged and relatively removable. A first chamber 6 is formed between the first and second seat bodies 5a, 5b. A plurality of first cooling channels 16 are provided on the first seat body 5a. A third seat body 5c is sleeved on the second seat body 5b, and a second cooling channel 17 is provided on the third seat body 5c. A cooling groove 18 is circumferentially provided on the outer wall of the second seat body 5b, and the second cooling channel 17 communicates with the cooling groove 18. Cooling gas is introduced into the cooling groove 18 through the second cooling channel 17, and the cooling gas can cool the second seat body 5b from the outside, thereby cooling the gas in the first chamber 6 through the second seat body 5b, further improving the cooling effect of the bearing 4.

[0055] In this embodiment, combined with Figure 3 As shown, a partition 1a is provided in the housing 1. The partition 1a extends in the vertical direction. A second chamber 8 for accommodating the detection component 2 and a third chamber 9 for accommodating the heating component 3 are formed on both sides of the partition 1a in the horizontal direction. Two bearing seats 5 are respectively provided on the two side walls of the second chamber 8. The partition 1a is provided with an air blowing port 10 and an air return port 11 arranged in an upper and lower manner. The air blowing port 10 is provided with a shutter to adjust the air outlet angle. A first baffle 1b is provided on the partition 1a between the air blowing port 10 and the air return port 11. The first baffle 1b is connected to the detection ring 2c. The heating component 3 can blow hot air out of the air blowing port 10 and inhale the heat exchanged gas from the return port 11. The first baffle 1b can relatively isolate the hot air blown out of the air blowing port 10 from the gas flowing back from the return port 11 to prevent the hot air and gas from disturbing each other and affecting the temperature environment in the second chamber 8.

[0056] Among them, the detection ring 2c is mounted on the bottom of the second chamber 8, and a second baffle 1c is provided on the upper part of the second chamber 8. The first baffle 1b and the second baffle 1c are both inclined upward along the direction close to the partition 1a. The first baffle 1b and the second baffle 1c are respectively located on both sides of the air outlet 10 and an air inlet channel is formed therebetween. The first baffle 1b and the bottom wall of the second chamber 8 are respectively located on both sides of the return air outlet 11 and an air outlet channel is formed therebetween.

[0057] In this embodiment, a curved air guide plate 12 is installed on the side of the test ring 2c facing away from the partition 1a. The upper end of the air guide plate 12 is connected to the second baffle 1c, and the lower end is connected to the bottom wall of the second chamber 8. The air guide plate 12 and the test ring 2c are arranged concentrically, forming a hot air channel between them. After the hot air is discharged from the air outlet 10, the air guide plate 12 guides the hot air so that it is evenly distributed around the test ring 2c, effectively improving the uniformity of rotor heating. During the rotor testing process, the temperature fluctuation within the second chamber 8 is ≤±2°C.

[0058] In this embodiment, the detection device also includes a temperature measuring component 13, which is located on the side of the detection ring 2c close to the partition 1a. It includes a mounting plate 13a provided on the detection ring 2c, a temperature measuring module 13b provided on the mounting plate 13a, and a protective plate 13c connected to the first baffle 1b. The mounting plate 13a is located between the detection ring 2c and the supporting column 2a. The protective plate 13c is L-shaped, and includes a first plate body 13c1 arranged horizontally and located above the temperature measuring module 13b, and a second plate body 13c2 arranged vertically and located between the temperature measuring module 13b and the partition 1a.

[0059] The temperature measuring module 13b is an infrared temperature sensor, and the first plate 13c1 and the second plate 13c2 can respectively block the top and side of the temperature measuring module 13b to prevent hot air from directly washing the temperature measuring module 13b and affecting the temperature measurement accuracy of the temperature measuring module 13b.

[0060] In this embodiment, the heating component 3 includes a blower 3a and a heating module 3b arranged in an upper and lower manner. The blower 3a is arranged close to the blowing port 10. The heating module 3b is an electric heating wire, which is located between the blowing port 10 and the return air port 11. The electric heating wire heats the air in the third chamber 9. The blower 3a outputs the hot air from the blowing port 10 to the outside. The gas after heat exchange returns to the third chamber 9 from the return air port 11. The heating module 3b heats the reflux gas, and then the blower 3a outputs the heated gas to the outside again, thereby realizing hot air circulation.

[0061] Example 2: This example discloses a deformation detection method based on the deformation detection device of Example 1. The detection method includes an elastic deformation detection method and a plastic deformation detection method.

[0062] The elastic deformation detection method includes the following steps:

[0063] Step 1: Install the rotor to be tested on the supporting column 2a, start the heating component 3 and the driving module 2b, the driving module 2b drives the rotor to be tested to rotate at an initial speed R, and the sensing module 2d outputs the distance parameter X (R) of the detection position at this time.

[0064] The temperature in the second chamber 8 is detected by the temperature measuring module 13b, and then the heating parameters of the heating component 3 are adjusted according to the detection value of the temperature measuring module 13b so that the temperature in the second chamber 8 reaches the set requirements, and the temperature range is 0~160℃.

[0065] In step 2, the driving module 2b drives the rotor to be tested to rotate at a speed of Rn, and the sensing module 2d outputs the distance parameter X(Rn) of the detection position at this time. Then, the driving module 2b drives the rotor to be tested to rotate at the initial speed of R again, and the sensing module 2d outputs the distance parameter X(Rn-R) of the detection position at this time.

[0066] Among them, Rn is greater than R. According to specific testing requirements, multiple different Rn can be selected to calculate the elastic deformation of the rotor at different speeds. The range of Rn and R is 0~20000rpm.

[0067] Step 3: Calculate the elastic deformation V(Rn) of the rotor to be tested, V(Rn)=X(Rn)-X(Rn-R).

[0068] In this embodiment, each sensing module 2d can detect multiple points along the rotor's circumference. Therefore, it outputs multiple distance parameters X(Rn) and X(Rn-R). To calculate the elastic deformation, the multiple parameters along the rotor's circumference output by each sensing module 2d must be fitted to obtain a least-squares fitting value. The fitted values ​​output by the three driving modules 2b are then averaged, and the resulting average value is used to calculate the rotor's elastic deformation. The specific fitting calculation principles and formulas are known from the prior art and are not detailed here.

[0069] During the testing process, the rotor's rotational center changes as the speed increases, resulting in deviations between the rotor's detection centers at low and high speeds. To address this, this embodiment does not use the initial distance parameter X(R) when calculating the elastic deformation. Instead, after testing the rotor at a speed of Rn, the rotor under test is driven again at a speed of R and the low-speed distance parameter X(Rn-R) is output. This ensures that the detection centers of the high-speed and low-speed distance parameters X(Rn-R) are consistent, thereby improving the accuracy of the measured elastic deformation.

[0070] In this embodiment, the plastic deformation detection method includes:

[0071] In step a, a high-precision solid rotor is installed on the supporting column 2a. The heating component 3 heats the second chamber 8 and maintains the temperature inside the second chamber 8 at 160°. The driving module 2b drives the solid rotor to rotate at a speed of 20,000 rpm for 20 minutes. Then, the driving module 2b drives the solid rotor to rotate at an initial speed of R. The sensor module 2d outputs the distance parameter H (R) between the detection position and the solid rotor at this time.

[0072] Among them, the high-precision solid rotor is an existing qualified rotor. Rotating it at high speed at a temperature of 160° for 20 minutes can better calculate the subsequent system compensation amount.

[0073] In step b, the driving module 2b drives the solid rotor to rotate at a speed of Rn, and then the driving module 2b drives the solid rotor to rotate at the initial speed of R again. The sensing module 2d outputs the distance parameter H (Rn) between the detection position and the solid rotor at this time.

[0074] Step c, calculate the system compensation amount Y(Rn-R), Y(Rn-R)=H(Rn-R)-H(R), and then calculate the plastic deformation amount P(Rn) of the rotor to be tested, P(Rn)=X(Rn-R)-Y(Rn-R).

[0075] During the detection process, the detection ring 2c and the supporting column 2a will be affected by the high temperature environment and deformed, causing the position of the rotor and the sensor module 2d to shift. However, this deformation is not the deformation of the rotor itself. When calculating the plastic deformation of the rotor, the system compensation amount is introduced based on the high-temperature deformation of the detection ring 2c and the supporting column 2a, which can effectively improve the accuracy of the measured plastic deformation.

[0076] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotor deformation detection device, comprising a housing (1), characterized in that: A detection component (2) and a heating component (3) are provided in the housing (1); the detection component (2) comprises a rotatably arranged supporting column (2a), a driving module (2b) for driving the supporting column (2a) to rotate, a detection ring (2c) surrounding the circumference of the supporting column (2a), and a plurality of detection positions arranged on the detection ring (2c), each detection position being provided with a sensor module (2d); the detection ring (2c) is concentrically arranged with the supporting column (2a), and the plurality of detection positions are arranged at intervals around the circumference of the detection ring (2c); A partition (1a) is provided in the shell (1), and a second chamber (8) for accommodating the detection component (2) and a third chamber (9) for accommodating the heating component (3) are respectively formed on both sides of the partition (1a), and an air blowing port (10) and an air return port (11) arranged up and down are provided on the partition (1a), and a first baffle (1b) is provided on the partition (1a) between the air blowing port (10) and the air return port (11), and the first baffle (1b) is connected to the detection ring (2c); The detection ring (2c) is mounted on the bottom of the second chamber (8); a second baffle (1c) is provided on the upper portion of the second chamber (8); the first baffle (1b) and the second baffle (1c) are respectively located on both sides of the air outlet (10) and an air inlet channel is formed therebetween; the first baffle (1b) and the bottom wall of the second chamber (8) are respectively located on both sides of the return air outlet (11) and an air outlet channel is formed therebetween; An arc-shaped air induction plate (12) is provided on a side of the detection ring (2c) away from the partition (1a); one end of the air induction plate (12) is connected to the second baffle (1c), and the other end is connected to the bottom wall of the second chamber (8); the air induction plate (12) and the detection ring (2c) are concentrically arranged, and a hot air channel is formed between the two. The detection device also includes a temperature measuring component (13), which is located on a side of the detection ring (2c) close to the partition (1a), and includes a mounting plate (13a) provided on the detection ring (2c), a temperature measuring module (13b) provided on the mounting plate (13a), and a protective plate (13c) connected to the first baffle (1b), wherein the protective plate (13c) includes a first plate body (13c1) located above the temperature measuring module (13b) and a second plate body (13c2) located between the temperature measuring module (13b) and the partition (1a).

2. The rotor deformation detection device according to claim 1, characterized in that: Bearings (4) are respectively provided at both ends of the bearing column (2a), and bearing seats (5) for accommodating the bearings (4) are respectively provided on the opposite sides of the housing (1), and at least one of the bearings (4) is slidably connected to the corresponding bearing seat (5).

3. The rotor deformation detection device according to claim 2, characterized in that: The bearing seat (5) has a first chamber (6) for accommodating the bearing (4), the outer wall of the bearing (4) is slidably engaged with the inner wall of the first chamber (6), and an elastic member (7) is provided on the side of the first chamber (6) away from the supporting column (2a).

4. The rotor deformation detection device according to claim 1, characterized in that: The heating assembly (3) comprises a blower (3a) and a heating module (3b) arranged vertically, the blower (3a) being arranged close to the air blowing port (10), and the heating module (3b) being located between the air blowing port (10) and the return air port (11).

5. A method for detecting rotor deformation, characterized in that: The detection method is based on the detection device according to any one of claims 1 to 4, and includes an elastic deformation detection method, and the elastic deformation detection method includes the following steps: Step 1: Mount the rotor to be tested on the supporting column (2a), start the heating component (3) and the driving module (2b), the driving module (2b) drives the rotor to be tested to rotate at an initial speed R, and the sensing module (2d) outputs the distance parameter X (R) of the detection position at this time; Step 2: the driving module (2b) drives the rotor to be tested to rotate at a speed of Rn, and the sensing module (2d) outputs the distance parameter X (Rn) of the detection position at this time. Then, the driving module (2b) drives the rotor to be tested to rotate at an initial speed of R again, and the sensing module (2d) outputs the distance parameter X (Rn-R) of the detection position at this time, wherein Rn is greater than R. Step 3: Calculate the elastic deformation V(Rn) of the rotor to be tested, V(Rn)=X(Rn)-X(Rn-R).

6. The rotor deformation detection method according to claim 5, characterized in that: The detection method also includes a plastic deformation detection method, and the plastic deformation detection method includes: Step a: a high-precision solid rotor is mounted on a bearing column (2a); a driving module (2b) drives the solid rotor to rotate at an initial speed R; and a sensing module (2d) outputs a distance parameter H (R) between the detection position and the solid rotor at this time; In step b, the driving module (2b) drives the solid rotor to rotate at a speed of Rn, and then the driving module (2b) drives the solid rotor to rotate at an initial speed of R again, and the sensing module (2d) outputs a distance parameter H (Rn) between the detection position and the solid rotor at this time; Step c, calculate the system compensation amount Y(Rn-R), Y(Rn-R)=H(Rn-R)-H(R), and then calculate the plastic deformation amount P(Rn) of the rotor to be tested, P(Rn)=X(Rn-R)-Y(Rn-R).

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