Motor abnormal sound detection equipment

Abstract

The utility model discloses motor abnormal sound detection equipment, and relates to the technical field of voiceprint detection, the motor abnormal sound detection equipment comprises a box body, a positioning structure and an abnormal sound detection device, the box body is provided with a sound insulation chamber, and the sound insulation chamber is provided with an inlet and outlet which can be opened and closed; the positioning structure is arranged in the sound insulation chamber and is used for fixing a to-be-detected motor; the abnormal sound detection device comprises a plurality of sound sensors located in the sound insulation chamber, the plurality of sound sensors are adjustably arranged and define a sound receiving area used for collecting voiceprints of the motor to be detected, and the plurality of sound sensors and at least two different surfaces of the motor to be detected are oppositely arranged. A to-be-detected motor can be put in and taken out through opening and closing of the sound insulation cavity, a good detection environment can be formed, abnormal sound detection of multiple types of motor products can be met through the adjustably-arranged sound sensor, and the sound receiving effect can be flexibly adjusted and improved; corresponding to a plurality of side surfaces of the motor, a good sound receiving effect is ensured, further abnormal sound detection analysis is facilitated, and a detection reliability result is improved.

Description

Technical Field

[0001] This utility model relates to the field of voiceprint detection technology, and in particular to a device for detecting abnormal noise in motors. Background Technology

[0002] Equipment acoustic signature detection technology determines whether there is an abnormal state in the equipment based on the frequency of the sound emitted during operation. Therefore, it is used in equipment processing and manufacturing, equipment maintenance and other processes, such as detecting abnormal noises in products on the production line and noise detection during equipment operation. It can help detect whether there are abnormal sounds in the product, so that operators can find problems in time and take corresponding measures, thereby improving product quality and production efficiency.

[0003] As one of the main components that generate abnormal noise during product use, motors are often tested separately during the manufacturing process. Existing methods for detecting abnormal noise usually involve setting up a special quiet room, using machines to assist in product operation, and relying on manual listening to identify the noise. This method requires highly skilled technicians and is prone to false positives. Utility Model Content

[0004] The main purpose of this invention is to provide a motor noise detection device that can detect abnormal noises during motor operation with high accuracy.

[0005] To achieve the above objectives, this utility model proposes a motor noise detection device for detecting abnormal noises in motors, comprising:

[0006] The enclosure has a soundproof chamber with an opening and closing entrance / exit.

[0007] A positioning structure, disposed within the soundproof cavity, is used to fix the motor to be tested; and,

[0008] The noise detection device includes multiple sound sensors located in the soundproof chamber. The multiple sound sensors are adjustable and arranged to form a sound-receiving area for collecting the sound signature of the motor under test. The multiple sound sensors are arranged opposite to at least two different surfaces of the motor under test.

[0009] In one embodiment, the positioning structure includes a positioning seat fixed to the soundproof cavity. The upper end face of the positioning seat is provided with a positioning groove for a portion of the motor to be tested to extend into. Two opposite side walls of the positioning groove are support walls. Both support walls are provided with upward-facing notches that penetrate the positioning seat. The two notches are used to accommodate the output shaft of the motor to be tested.

[0010] In one embodiment, the positioning groove further has two mating walls adjacent to the two support walls, the two mating walls extending from bottom to top in a direction away from each other, the two mating walls being used to contact the outer surface of the motor to be tested.

[0011] In one embodiment, the width of the notch is gradually increased from bottom to top.

[0012] In one embodiment, at least one vibration sensor is provided inside the soundproof cavity, and the vibration sensor is located at the opening.

[0013] In one embodiment, a buffer structure is provided between the positioning structure and the bottom wall of the soundproof chamber.

[0014] In one embodiment, the number of sound sensors is three sets, the sound receiving area surrounds the outer periphery of the motor to be tested, and each set of sound sensors is respectively set to correspond to the front end cover, rear end cover and outer side of the motor to be tested.

[0015] In one embodiment, the motor noise detection device further includes an adjustment structure, which includes a plurality of mounting parts that can be movably arranged in the horizontal direction and / or the vertical direction;

[0016] The plurality of sound sensors are respectively disposed on the plurality of mounting parts.

[0017] In one embodiment, the adjustment structure includes a support frame fixed to the soundproof cavity, and the adjustment structure further includes:

[0018] At least one first adapter assembly includes at least two first support rods, a first adapter member, and a first mounting member. The first adapter member has two connecting arms arranged at an included angle. The two connecting arms are slidably connected to the two first support rods respectively. One of the first support rods is fixed to the support frame, and the other first support rod is mounted on the first mounting member, which forms the mounting portion; and / or...

[0019] At least one second adapter assembly includes a second support rod and a second mounting member, the second mounting member being inclined and connected to the second support rod to form the mounting portion, the second support rod being movably mounted to the support frame.

[0020] In one embodiment, the first mounting member and / or the second mounting member are rotatably disposed.

[0021] In one embodiment, the housing includes:

[0022] A housing having a cavity with a side opening, the opening of which forms the inlet / outlet; and,

[0023] A cover is movably mounted to the housing so as to cover or open the opening of the cavity;

[0024] At least one of the housing and the cover is provided with a sound insulation structure, such that the cover covers the cavity to form a sealed sound insulation chamber.

[0025] In one embodiment, the cover includes two first sound-insulating panels nested together, with a first hollow cavity formed between the two first sound-insulating panels, and the two first sound-insulating panels and the first hollow cavity together forming the sound insulation structure; and / or,

[0026] At least one side wall of the housing includes two second sound insulation plates spaced apart, forming a second hollow cavity between the two second sound insulation plates, and the two second sound insulation plates and the second hollow cavity together form the sound insulation structure.

[0027] In this invention, the placement and removal of the motor under test are achieved by opening and closing the soundproof chamber, facilitating the integration of the equipment into the production line process of the corresponding components. When the inlet and outlet are closed, the soundproof chamber is sealed, creating a favorable testing environment and ensuring clear acquisition of acoustic signatures during motor operation. The motor is fixed in place by a positioning structure, ensuring its stability. The motor under test is located within the sound-collecting area, and acoustic signature information is collected by multiple sound sensors. The adjustable sound sensors can detect abnormal noises from various motor models and can be flexibly adjusted to improve sound collection. Multiple sound sensors are positioned on multiple surfaces of the motor, ensuring good sound collection and facilitating further abnormal sound detection and analysis, thus improving the reliability of the test results. This structure provides extensive sound collection coverage for motors. The multiple sound sensors are arranged according to the possible causes of abnormal noises in the motor, covering various fault types in different locations. Furthermore, the data obtained through sensor detection can be stored for subsequent traceability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of a structure of an embodiment of the motor noise detection device provided by this utility model;

[0030] Figure 2 for Figure 1A schematic diagram showing the opening of the inlet and outlet of the noise detection equipment for motors.

[0031] Figure 3 for Figure 2 A schematic diagram showing the coordination between the positioning component and the adjustment structure;

[0032] Figure 4 for Figure 2 A schematic diagram of the positioning component.

[0033] Explanation of icon numbers:

[0034] 100. Motor noise detection equipment; 1. Housing; 11. Shell; 12. Cover; 13. Entrance / exit; 1a. Soundproof chamber; 2. Positioning structure; 21. Positioning seat; 211. Positioning groove; 211a. Support wall; 211b. Mating wall; 212. Notch; 3. Noise detection device; 31. Sound sensor; 32. Vibration sensor; 4. Adjustment structure; 41. Support frame; 42. First adapter assembly; 421. First support rod; 422. First adapter piece; 423. First mounting piece; 43. Second adapter assembly; 431. Second support rod; 432. Second mounting piece; 5. Buffer structure; 200. Motor.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] Equipment acoustic signature detection technology determines whether there is an abnormal state in the equipment based on the frequency of the sound emitted during operation. Therefore, it is used in equipment processing and manufacturing, equipment maintenance and other processes, such as detecting abnormal noises in products on the production line and noise detection during equipment operation. It can help detect whether there are abnormal sounds in the product, so that operators can find problems in time and take corresponding measures, thereby improving product quality and production efficiency.

[0040] As one of the main components generating abnormal noise during product use, the motor is often inspected separately during the manufacturing process. Taking the motor as an example, as one of the main components generating abnormal noise, the existing methods for identifying abnormal noise are:

[0041] Manual listening: This method is highly subjective and requires a high level of skill from the personnel. It does not generate specific data for technical staff to review and make judgments. Changing the testing personnel or the environment can significantly affect the test results.

[0042] Sound pressure level / characteristic frequency assessment: This method avoids the subjective influence of manual listening, but the testing method is relatively simple and cannot distinguish between various defects in the motor, resulting in generally lower accuracy. It requires highly skilled technicians, and the set range has a significant impact on the results.

[0043] In view of this, the present invention provides a motor noise detection device that can detect abnormal noises during motor operation with high accuracy.

[0044] Please refer to Figures 1 to 2 The motor noise detection device 100 includes a housing 1, a positioning structure 2, and a noise detection device 3. The housing 1 has a soundproof chamber 1a, and the soundproof chamber 1a has an openable and closable entrance and exit 13. The positioning structure 2 is located in the soundproof chamber 1a and is used to fix the motor to be tested. The noise detection device 3 includes a plurality of sound sensors 31 located in the soundproof chamber 1a. The plurality of sound sensors 31 are adjustable and arranged to form a sound-receiving area for collecting the sound patterns of the motor 200 to be tested. The plurality of sound sensors 31 are arranged opposite to at least two different surfaces of the motor 200 to be tested.

[0045] In this invention, the opening and closing of the soundproof chamber 1a allows for the placement and removal of the motor under test, facilitating its integration into the production line process of the corresponding components. When the inlet / outlet 13 is closed, the soundproof chamber 1a is sealed, creating a favorable testing environment and ensuring clear sound signature collection during motor operation. The positioning structure 2 secures the motor, ensuring its stability. The motor under test is located within the sound-collecting area, and multiple sound sensors 31 collect sound signature information. The adjustable sound sensors 31 can detect abnormal noise from various motor models and can be flexibly adjusted to improve sound collection. Multiple sound sensors 31 correspond to multiple surfaces of the motor, ensuring good sound collection and facilitating further abnormal sound detection and analysis, thus improving the reliability of the detection results. This structure provides extensive sound coverage for the motor. The multiple sound sensors 31 are arranged according to the possible causes of abnormal noise in the motor, covering various fault types in different locations. Furthermore, the data obtained through sensor detection can be stored for subsequent traceability.

[0046] It should be noted that the multiple surfaces of the motor in this application can be defined as the front cover surface, the rear cover surface, and the outer surface. Multiple sound sensors 31 can be used to correspond to the front cover surface, the rear cover surface, and the outer surface of the motor 200, so that the distribution of the sound sensors 31 can cover the front axle, the rear axle, the rear cover, and the stator and rotor of the motor 200 during detection.

[0047] It should be noted that the sound sensor 31 does not contact the surface of the motor 200. It mainly outputs low-frequency signals by receiving sound signals. If it were in contact with the surface of the motor 200, the detection results would be affected by the overall vibration of the motor 200 during operation.

[0048] This utility model does not limit the specific form of the positioning structure 2. It can be achieved by setting a clamping structure to clamp or release the motor under test. In this embodiment, please refer to Figures 3 to 4The positioning structure 2 includes a positioning seat 21 fixed to the soundproof chamber 1a. The upper surface of the positioning seat 21 has a positioning groove 211 for partial insertion of the motor 200 to be tested. Two opposing sidewalls of the positioning groove 211 are support walls 211a, each with an upward-facing notch 212 penetrating the positioning seat 21. The two notches 212 are used to accommodate the output shaft of the motor to be tested. It should be understood that the front and rear shafts of the motor 200 extend from the two notches 212, and the corresponding positions of the motor housing 11 can abut against the walls of the notches 212, thus allowing the motor 200 to be suspended and supported within the positioning groove 211. This structure eliminates the need for an additional drive structure; manual placement and removal are sufficient. For products of different specifications, only the positioning seat 21 needs to be replaced.

[0049] This invention does not limit the specific shape of the notch 212; it can be a U-shaped notch 212, a V-shaped notch 212, etc. In this embodiment, the width of the notch 212 gradually increases from bottom to top, forming a V-shape, which facilitates support and fit.

[0050] It should be understood that, considering that notch 212 is a major load-bearing point, in order to prevent the tip of notch 212 from breaking due to long-term use, a reinforcing structure can be added to notch 212 to improve its strength.

[0051] Furthermore, a replacement plate that can be detachably installed onto the positioning seat 21 can be provided. Part of the replacement plate is contoured to the notch 212 to facilitate installation. The replacement plate is also provided with the notch 212 to adapt to motors 200 of different sizes. It can be adapted by removing and installing the replacement plate.

[0052] It should be understood that the positioning groove 211 can be configured as a contour groove to fit the shape of the motor 200. In this embodiment, the positioning groove 211 also has two mating walls 211b adjacent to the two supporting walls 211a. The two mating walls 211b extend from bottom to top in a direction away from each other, and are used to contact the outer surface of the motor 200 to be tested. The two mating walls 211b are inclined to adapt to the size of the motor 200. The mating walls 211b are tangent to the housing 11 of the motor 200, thereby providing auxiliary support.

[0053] Based on the above embodiments, at least one vibration sensor 32 is installed in the soundproof chamber 1a. The vibration sensor 32 needs to be able to contact the motor 200 to achieve vibration sensing. This contact can be direct or indirect. For example, the vibration sensor 32 can be directly attached to the outside of the motor 200 or fixed to the positioning structure 2. The vibration is transmitted from the motor 200 to the positioning structure 2 and then to the vibration sensor 32. In this embodiment, the vibration sensor 32 is placed at the notch 212, which allows for vibration transmission while maintaining a relatively close proximity to the motor 200. It should be understood that after the motor 200 is installed, the vibration sensor 32 may or may not be in contact with the motor 200. The adjustable arrangement of the sound sensor 31 and the relatively fixed arrangement of the vibration sensor 32 ensures the collection of vibration signals.

[0054] Specifically, when the abnormal noise detection device 3 includes both a sound sensor 31 and a vibration sensor 32, the sound pattern is collected by the sound sensor 31 and the vibration sensor 32. The low-frequency and high-frequency signals collected by the sound sensor 31 and the vibration sensor 32 are uploaded to the control terminal and can be integrated and calculated to obtain the sound pattern detection result. This result can be used to determine whether the sound pattern of the current motor meets the design requirements, i.e., whether there is an abnormal noise. The detection process does not require manual intervention and has high accuracy.

[0055] To avoid the influence of external environmental vibrations, a buffer structure 5 is provided between the positioning structure 2 and the bottom wall of the soundproof chamber 1a. This invention does not limit the specific form of the buffer structure 5; it can be a buffer sponge. In this embodiment, multiple connecting columns are provided below the positioning seat 21. These connecting columns are hollow and contain buffer springs. The connecting columns themselves are made of flexible material and have a certain amount of compression, thereby achieving vibration buffering of the positioning seat 21, preventing the vibration of the motor 200 from being transmitted to external equipment, and also preventing the external environment from affecting the vibration detection of the motor 200.

[0056] This invention does not limit the installation form of the sound sensor 31. In some embodiments, the abnormal noise detection device 32 further includes an adjustment structure 4 corresponding to the sound sensor 31. The adjustment structure 4 includes multiple mounting parts that can be movably arranged in the horizontal direction and / or the vertical direction. The multiple sound sensors 31 are mounted on the multiple mounting parts so that they can move to be close to the surface of the product to be detected, or to be moved to abut the surface of the motor 200. By setting the adjustment structure 4, the sound sensor 31 can change position under the drive of the mounting parts, thereby adapting to motors 200 of different specifications.

[0057] For details, please refer to Figure 3The adjustment structure 4 includes a support frame 41 fixed to the soundproof chamber 1a. The support frame 41 serves as a support structure, which can be U-shaped, L-shaped, or other structures, thereby enabling the simultaneous installation of multiple sound sensors 31 at different positions of the corresponding motor 200.

[0058] In some embodiments, the adjustment structure 4 further includes at least one first adapter assembly 42. The first adapter assembly 42 includes at least two first support rods 421, a first adapter 422, and a first mounting member 423. The first adapter 422 has two connecting arms arranged at an angle. The two connecting arms are slidably connected to the two first support rods 421 respectively. One of the first support rods 421 is fixed to the support frame 41, and the other first support rod 421 is installed on the first mounting member 423. The first mounting member 423 forms a mounting part. The two first support rods 421 can slide and cooperate through the first adapter 422, thereby driving the first mounting member 423 to adjust its position in the horizontal direction and / or vertical direction, realizing the adjustment of the sound sensor 31, thereby adapting to different detection positions of the motor 200. It should be noted that the structural form of the first adapter block is not limited. The first support rod 421 can be installed on the two connecting arms by clamping or shaft hole cooperation.

[0059] In some embodiments, the adjustment structure 4 further includes at least one second adapter assembly 43, which includes a second support rod 431 and a second mounting member 432. The second mounting member 432 is inclined and connected to the second support rod 431 to form a mounting portion. The second support rod 431 is movably mounted on the support frame 41. It should be understood that the second mounting member 432 can be aligned with the motor 200 by installing the second support rod 431 at a reasonable position on the support frame 41. The second support rod 431 can extend vertically or horizontally, and the second mounting member 432 is inclined, thereby enabling the sound sensor 31 to correspond to the motor 200 at a certain angle.

[0060] It should be understood that the first adapter component 42 and the second adapter can be set simultaneously, corresponding to different positions of the motor 200. The types of sensors carried on the first adapter component 42 and the second adapter component 43 can be the same or different. For example, the first adapter component 42 and the second adapter component 43 are both used to house the sound sensor 31, or the first adapter component 42 and the second adapter component 43 are used to house the sound sensor 31 and the vibration sensor 32, respectively. When different sensors are installed, the corresponding mounting part is controlled to drive the sound sensor 31 to move closer to the motor 200 and spaced apart, thereby realizing the voiceprint detection function.

[0061] Please refer to Figure 3In this embodiment, there are three sets of sound sensors 31. The sound receiving area is arranged around the outer periphery of the motor 200 to be tested, and each set of sound sensors 31 is respectively set with the front end cover, rear end cover and outer side of the motor to be tested.

[0062] Correspondingly, two first adapter components 42 are provided opposite to each other on the side of the motor 200, corresponding to the front and rear axles of the motor 200. A second connecting component is provided above the motor 200, corresponding to the stator and rotor positions of the motor 200. Sound sensors 31 are mounted on both the first adapter component 42 and the second adapter component 43.

[0063] Both first support rods 421 in the two first connecting assemblies extend horizontally and intersect horizontally. One of them connects to a support frame 41 at one end in the horizontal direction, and the other is used to mount a first mounting member 423. The detection end of the sound sensor 31 on the first mounting member 423 is positioned horizontally. The second support rod 431 in the second connecting assembly extends horizontally and is mounted on an extension frame at the upper end of the support frame 41 to meet the height requirement. The detection end of the sound sensor 31 on the second mounting frame is positioned vertically.

[0064] Furthermore, the first mounting member 423 and / or the second mounting member 432 are rotatable. This allows for angle adjustment to change the orientation of the sensor, facilitating the search for a suitable sound pickup position.

[0065] This utility model does not limit the structural form of the box 1. Considering the convenience of controlling the entrance / exit 13 switch, in some embodiments, please refer to... Figures 1 to 2 The housing 1 includes a shell 11 and a cover 12. The shell 11 has a cavity with a side opening, forming an inlet / outlet 13. The cover 12 is movably mounted on the shell 11 to cover or open the cavity opening. At least one of the shell 11 and the cover 12 is provided with a sound insulation structure, so that the cover 12 covers the cavity to form a sealed soundproof chamber 1a. Through the spliced ​​structural design, the opening and closing of the inlet / outlet 13 can be achieved by controlling the cover 12, and the sound insulation structure ensures that the soundproof chamber 1a has a good sound insulation effect, thereby guaranteeing the testing environment.

[0066] It should be noted that the cover 12 can be positioned above or on the side of the shell 11, or the cover can be designed as a structure with a certain shape, thereby corresponding to multiple sides of the shell 11 at the same time.

[0067] This invention does not limit the movement of the cover 12. In one embodiment, one end of the cover 12 is hinged to the housing 11, and the other end is rotatable. In this embodiment, the two opposite ends of the cover 12 are connected to the housing 11 by two hydraulic rods, thereby enabling automatic opening and closing. The hydraulic drive ensures a good sealing fit between the cover 12 and the housing 11.

[0068] In this embodiment, the cover 12 has an irregular shape and has four interconnected side walls. Each pair of adjacent side walls is set at an angle to form a shell-like shape. The cover 12 corresponds to the left, right, front and top sides of the shell 11.

[0069] This utility model does not limit the specific form of the sound insulation structure. In some embodiments, the cover 12 includes two first sound insulation panels that are sequentially nested together, forming a first hollow cavity between the two first sound insulation panels. The two first sound insulation panels and the first hollow cavity together form a sound insulation structure. The first sound insulation panels can be made of glass, thereby forming a hollow glass sealed structure. This structure has good sound insulation performance. At the same time, the glass material has good transparency and light transmittance, which allows operators to directly observe the status of the motor in the sound insulation chamber 1a through the cover.

[0070] In some embodiments, at least one sidewall of the housing 11 includes two spaced-apart second sound-insulating panels, with a second hollow cavity formed between the two second sound-insulating panels, and the two second sound-insulating panels and the second hollow cavity together form a sound insulation structure. It should be understood that a portion of the sidewall of the housing 11 may be configured as a double-layer second sound-insulating panel structure, or the entire wall of the housing 11 may be configured as a double-layer second sound-insulating panel structure. The second sound-insulating panels may be sound-insulating cotton with a thickness of 100 mm, thereby achieving a good sound insulation effect.

[0071] The enclosure 1 is positioned to facilitate observation of the interior of the soundproof chamber 1a. A portion of the enclosure 1 can be made transparent to form an observation window, allowing the power equipment inside the soundproof chamber 1a to be visible. When the enclosure 1 consists of a shell 11 and a cover 12, an observation window can be formed by providing openings in portions of the shell 11 and / or the cover 12, with transparent plastic or glass plates installed at the openings. Alternatively, the cover 12 can be made entirely of glass, thus forming an observation window as a whole.

[0072] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An electric machine abnormal sound detection device characterized by comprising: The motor abnormal sound detection device comprises: a box body having a soundproof chamber with an openable and closable entrance; a positioning structure arranged in the soundproof chamber for fixing a motor to be detected; and an abnormal sound detection device comprising a plurality of sound sensors arranged in the soundproof chamber, the plurality of sound sensors are adjustably arranged and surround a sound collecting area for collecting the sound print of the motor to be detected, and the plurality of sound sensors are arranged opposite to at least two different surfaces of the motor to be detected. The positioning structure comprises a positioning seat fixed to the soundproof chamber, an upper end surface of the positioning seat is provided with a positioning groove for partially inserting the motor to be detected, and two opposite side walls of the positioning groove are support walls, both of which are provided with upwardly penetrating notches of the positioning seat for accommodating the output shaft of the motor to be detected.

2. The motor anomaly detection device of claim 1, wherein The positioning groove further comprises two abutting walls adjacent to the two support walls, which extend away from each other from bottom to top, and the two abutting walls are used to contact the outer side of the motor to be detected.

3. The motor anomaly detection device of claim 2, wherein The width of the notches gradually increases from bottom to top.

4. The motor abnormal sound detection apparatus according to claim 2, wherein At least one vibration sensor is arranged in the soundproof chamber, and the vibration sensor is arranged at the notch.

5. The motor abnormal sound detection apparatus according to any one of claims 2 to 4, characterized by A buffer structure is arranged between the positioning structure and the bottom wall of the soundproof chamber.

6. The motor anomaly detection device of claim 1, wherein The number of sound sensors is three groups, the sound collecting area surrounds the outer periphery of the motor to be detected, and each group of sound sensors is arranged corresponding to the front end cover, rear end cover and outer side of the motor to be detected.

7. The motor anomaly detection device of claim 1, wherein The motor abnormal sound detection device further comprises an adjusting structure, the adjusting structure comprises a plurality of mounting parts which can be movably arranged in horizontal direction and / or upward and downward direction; 8. The motor anomaly detection device of claim 1, wherein, The plurality of sound sensors are arranged on the plurality of mounting parts respectively. The adjusting structure comprises a support frame fixed in the soundproof chamber, and further comprises:

9. The motor anomaly detection device of claim 8, wherein, at least one first adapter assembly comprising at least two first supporting rods, a first adapter and a first mounting part, the first adapter has two connection arms arranged at an angle, the two connection arms are respectively connected with the two first supporting rods in sliding mode, one of the first supporting rods is fixed to the support frame, and the other first supporting rod is provided for mounting the first mounting part, and the first mounting part forms the mounting part; and / or at least one second adapter assembly comprising a second supporting rod and a second mounting part, the second mounting part is arranged at an angle and connected to the second supporting rod to form the mounting part, and the second supporting rod is movably mounted to the support frame. The first mounting part and / or the second mounting part are rotatably arranged.

10. The motor anomaly detection device of claim 9, wherein, The box body comprises:

11. The motor anomaly detection device of claim 1, wherein, a shell having a cavity with a side opening, and the opening of the cavity forms the entrance; and a cover movably mounted to the shell to cover or open the opening of the cavity; At least one of the shell and the cover is provided with a soundproof structure, so that the cover covers the cavity to form a sealed soundproof chamber. ​ 12. The motor anomaly detection device of claim 11, wherein, The cover comprises two first sound insulation plates which are sequentially sleeved, a first hollow cavity is formed between the two first sound insulation plates, and the two first sound insulation plates and the first hollow cavity jointly form the sound insulation structure; and / or, At least one side wall of the shell comprises two second sound insulation plates which are spaced apart, a second hollow cavity is formed between the two second sound insulation plates, and the two second sound insulation plates and the second hollow cavity jointly form the sound insulation structure.

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