A motor noise and vibration detection device

Abstract

The utility model belongs to the field of noise detection, concretely relates to a motor noise vibration detection equipment, including the cabinet, be provided with detection cavity in the cabinet, detection platform is provided to the detection cavity bottom surface, and the other inner wall except the bottom surface of detection cavity is provided with sound absorption material, be provided with detection unit on the detection platform, and detection unit is used for providing the load for the motor of being detected, be provided with clamping positioning mechanism on the detection platform, and clamping positioning mechanism is used for clamping the motor of being detected and detection unit cooperation or separation, the utility model sets up the sound insulation box, provides the environment for detection working condition, through setting up detection unit and clamping positioning mechanism, forms reliable positioning and detection cooperation to the motor of being measured.

Description

Technical Field

[0001] This utility model belongs to the field of noise detection, specifically relating to a motor noise and vibration detection device. Background Technology

[0002] For motors with high precision and performance requirements, such as those used in new energy vehicles (sunroofs, seat adjustments, wipers, rearview mirror folding motors) or home appliances (adjustable motors, compressors, electronic water pumps), there is a need to test parameters such as noise and vibration.

[0003] Existing technologies such as CN202310724855.8 propose methods for testing such motors, but the structural design is relatively general and lacks the specific structure of testing equipment that is actually put into use. Therefore, it is necessary to design such a method to provide a reliable environment for motor testing. Utility Model Content

[0004] To address the lack of practical and usable equipment for motor testing, this utility model provides a motor noise and vibration testing device.

[0005] The purpose of this utility model is achieved in the following manner: a motor noise and vibration detection device, including a cabinet 1, a detection cavity 11 is provided inside the cabinet 1, a detection platform 2 is provided on the bottom surface of the detection cavity 11, and sound-absorbing material is provided on the other inner walls of the detection cavity 11 except for the bottom surface.

[0006] The testing platform 2 is equipped with a testing unit 3, which is used to provide a load for the motor being tested;

[0007] The testing platform 2 is equipped with a clamping and positioning mechanism 4, which is used to clamp the motor being tested and to cooperate with or separate it from the testing unit 3.

[0008] Furthermore, the testing unit 3 includes a first bracket 31, a second bracket 32, and a third bracket 33 that are sequentially fixedly connected to the testing platform 2. The first bracket 31 is fixedly connected to a hysteresis load 34. The output end of the hysteresis load 34 is fixedly connected to one end of a first coupling 35. The other end of the first coupling 35 is fixedly connected to one end of an encoder 36. The encoder 36 is fixedly connected to the second bracket 32. The other end of the encoder 36 is fixedly connected to one end of a second coupling 37. The other end of the second coupling 37 is fixedly connected to one end of a shaft 38. The shaft 38 is rotatably connected to the third bracket 33. The other end of the shaft 37 is fixedly connected to a coupling connector 381.

[0009] Furthermore, a cavity forming a water channel is provided inside the first bracket 31, and the cavity is connected to the water cooling circulation device 39 through an inlet pipe and an outlet pipe.

[0010] Furthermore, the clamping and positioning mechanism 4 includes a sliding platform 41, a slider 42 fixedly connected to the bottom of the sliding platform 41, the slider 42 slidably engaging with a slide rail 21, and the slide rail 21 fixedly connected to the detection platform 2; a positioning groove 43 for placing the motor to be tested is fixedly connected to the sliding platform 41, and a quick clamp 44 is fixedly connected to the sliding platform 41 on the side of the positioning groove 43, the quick clamp 44 being used to clamp the motor to be tested placed in the positioning groove 43.

[0011] Furthermore, a positioning pin 45 is slidably provided on the sliding platform 41 in the vertical direction. The bottom end of the positioning pin 45 passes through the sliding platform 41 and extends downward. A positioning block 22 is fixedly connected to the detection platform 2. The positioning block 22 is provided with a positioning hole that cooperates with the positioning pin 45. The positioning hole includes a positioning hole that cooperates with the positioning pin 45 when the motor being tested is in the testing position, and also includes a positioning hole that cooperates with the positioning pin 45 when the motor being tested is in the placement or removal position. A limiting bracket 23 is fixedly connected to the front and rear of the detection platform 2 along the sliding direction of the sliding platform 41, and a limiting bolt 231 is threadedly connected to each limiting bracket 23. One end of the limiting bolt 231 is used to abut against the side of the sliding platform 41.

[0012] Furthermore, a triaxial accelerometer 441 is provided at the output end of the quick clamp 44.

[0013] Furthermore, at least two ribs 24 are fixedly connected to the bottom of the detection platform 2, and a mesh bracket 25 is fixedly connected to the bottom of the ribs 24. The bottom of the mesh bracket 25 is fixedly connected to the bottom surface of the detection cavity 11 through a support leg.

[0014] Furthermore, the detection cavity 11 is formed by the cabinet 1 and the cabinet door 12 hinged to the side of the cabinet 1, and the sound-absorbing material is a sound-absorbing wedge 13.

[0015] Furthermore, a camera 14 and a microphone 15 are also provided inside the detection cavity 11.

[0016] Furthermore, a perforated plate 16 is fixedly connected to the cabinet 1 below the detection cavity 11, and a controller 17 is fixedly connected to the perforated plate 16.

[0017] Compared with the existing technology, this utility model is equipped with a soundproof enclosure to provide an environment for the testing process. By setting up a testing unit and a clamping and positioning mechanism, a reliable positioning and testing cooperation is formed for the motor under test. Attached Figure Description

[0018] Figure 1 This is one of the schematic diagrams of the cabinet structure;

[0019] Figure 2 This is the second schematic diagram of the cabinet structure;

[0020] Figure 3 This is one of the structural diagrams of the testing platform;

[0021] Figure 4 This is the second structural diagram of the testing platform.

[0022] The components include: cabinet 1, detection chamber 11, cabinet door 12, sound-absorbing wedge 13, camera 14, microphone 15, mesh plate 16, and controller 17.

[0023] Detection platform 2, slide rail 21, positioning block 22, limit bracket 23, limit bolt 231, rib 24, mesh bracket 25.

[0024] Testing unit 3, first support 31, second support 32, third support 33, hysteresis load 34, first coupling 35, encoder 36, second coupling 37, connecting shaft 38, coupling joint 381, water cooling circulation equipment 39.

[0025] Clamping and positioning mechanism 4, sliding platform 41, slider 42, positioning groove 43, quick clamp 44, triaxial accelerometer 441, positioning pin 45. Detailed Implementation

[0026] 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.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] As attached Figure 1-2 As shown, a motor noise and vibration testing device includes a cabinet 1, which is preferably made of thickened metal. A testing cavity 11 is provided inside the cabinet 1, a testing platform 2 is provided on the bottom surface of the testing cavity 11, and sound-absorbing material is provided on the other inner walls of the testing cavity 11 except for the bottom surface.

[0029] The testing platform 2 is equipped with a testing unit 3, which is used to provide a load for the motor being tested;

[0030] The testing platform 2 is equipped with a clamping and positioning mechanism 4, which is used to clamp the motor being tested and to cooperate with or separate it from the testing unit 3.

[0031] Further details are attached. Figure 3-4 As shown, the testing unit 3 includes a first bracket 31, a second bracket 32, and a third bracket 33 sequentially fixedly connected to the testing platform 2. The first bracket 31 is fixedly connected to a hysteresis load 34, specifically a hysteresis motor or a hysteresis brake, used to provide a load simulating actual usage scenarios for the motor under test. The output end of the hysteresis load 34 is fixedly connected to one end of a first coupling 35, and the other end of the first coupling 35 is fixedly connected to one end of an encoder 36. The encoder 36 is fixedly connected to the second bracket 32. Preferably, a torque sensor is coaxially connected in series with the encoder 36, and the other end of the encoder 36 is fixedly connected to one end of a second coupling 37. The encoder 36 with its input shaft extending from both ends is a current... Technically, the other end of the second coupling 37 is fixedly connected to one end of the connecting shaft 38, which is rotatably connected to the third bracket 33. The other end of the connecting shaft 37 is fixedly connected to the coupling connector 381. The first coupling 35 and the second coupling 37 are both existing couplings. The coupling connector 381 is half the shape of a conventional coupling. For conventional shafted motors, the coupling connector 381 is used to clamp and fix the motor shaft of the motor under test. For special shaftless motors as shown in the figure, the coupling connector 381 is pre-fixed to one end of a connecting shaft that mates with the shaftless motor. The other end of the connecting shaft is used to connect to the output end of the shaftless motor. The above design makes it easy to replace each part of the testing unit 3.

[0032] Furthermore, since the hysteresis load 34 is prone to heat generation during operation and is in a closed environment, a cavity is provided inside the first bracket 31 to form a water channel. The cavity is connected to the water cooling circulation device 39 through an inlet pipe and an outlet pipe.

[0033] Furthermore, the clamping and positioning mechanism 4 includes a sliding platform 41, which is located on the side of the coupling joint 381 and slides in a direction away from and towards the coupling joint 381. A slider 42 is fixedly connected to the bottom of the sliding platform 41, and the slider 42 slides in conjunction with a slide rail 21, which is fixedly connected to the detection platform 2. A positioning groove 43 for placing the motor to be tested is fixedly connected to the sliding platform 41. A quick clamp 44 is fixedly connected to the sliding platform 41 on the side of the positioning groove 43. The quick clamp 44 is a prior art technology, which uses the lever principle to pull the handle to make the output end press down stably to one side. The quick clamp 44 is used to clamp the motor to be tested placed in the positioning groove 43.

[0034] Furthermore, a positioning pin 45 is slidably provided on the sliding platform 41 in the vertical direction. Specifically, a sliding sleeve penetrating the platform plate is fixedly connected to the sliding platform 41, and the positioning pin 45 is slidably connected inside the sliding sleeve. The top of the positioning pin 45 extends out to one side as a handle, and the bottom end of the positioning pin 45 passes through the sliding platform 41 and extends downward. A positioning block 22 is fixedly connected to the detection platform 2. The positioning block 22 is provided with positioning holes that cooperate with the positioning pin 45. The positioning holes include positioning holes that cooperate with the positioning pin 45 when the motor being tested is in the detection position, and positioning holes that cooperate with the positioning pin 45 when the motor being tested is in the placement or removal position. The positioning pin 45 has a positioning hole that allows for quick switching and locking of work positions by pulling the positioning pin 45 and pushing the sliding platform 41. A limit bracket 23 is fixedly connected to the front and rear detection platform 2 along the sliding direction of the sliding platform 41, and a limit bolt 231 is threaded onto each limit bracket 23. One end of the limit bolt 231 is used to abut against the side of the sliding platform 41. Through the cooperation between the limit bolt 231 and the limit bracket 23, the stroke of the sliding platform 41 is limited. The optimal limit stroke of the sliding platform 41 at the front and rear ends corresponds to the detection work position and the placement or removal work position, respectively.

[0035] Furthermore, a triaxial acceleration sensor 441 is provided at the output end of the quick clamp 44. The triaxial acceleration sensor 441 can be installed in a housing for cooperating with the top surface of the motor under test. When the motor under test is in a fixed state, the triaxial acceleration sensor 441 is pressed onto the surface of the motor by the output end of the quick clamp 44.

[0036] Furthermore, the detection platform 2 is preferably a perforated plate structure. The first support 31, the second support 32, the third support 33, the positioning block 22, and the limiting support 23 are all fixed to the detection platform 2 by bolts. At least two ribs 24 are fixedly connected to the bottom of the detection platform 2 by bolts. The bottom of the ribs 24 is fixedly connected to the mesh support 25 by bolts. The bottom of the mesh support 25 is fixedly connected to the bottom surface of the detection cavity 11 by four side legs. Vibration isolation pads are preferably provided between the four legs and the detection cavity 11 to reduce the outward transmission of vibration and reduce the inward interference of external vibration. The advantages of this structure are: easy maintenance and disassembly, easy heat dissipation, and the gap left is convenient for wiring.

[0037] Furthermore, the detection cavity 11 is formed by the cabinet body 1 and the cabinet door 12 hinged to the side of the cabinet body 1. An openable and closable door lock structure is provided between the cabinet door 12 and the cabinet body 1. The sound-absorbing material is a sound-absorbing wedge 13, which is existing technology and is used to create a soundproof room.

[0038] Furthermore, a camera 14 and a microphone 15 are also provided inside the detection cavity 11. The camera 14 and the microphone 15 are preferably located on the top of the detection cavity 11 for observing the detection process and collecting the amount of motor noise.

[0039] Furthermore, a perforated plate 16 is fixedly connected to the cabinet 1 below the detection chamber 11, and a controller 17 and a water-cooling circulation device 39 are fixedly connected to the perforated plate 16. The water path passes through the bottom surface of the detection chamber 11 and is connected to the water-cooling circulation device 39.

[0040] Working process: Open cabinet door 12, pull up positioning pin 45, pull sliding platform 41 to move backward to the pick-and-place station, put the motor into positioning slot 43, pull quick clamp 44 handle to press the output end of triaxial accelerometer 441 onto the top of the motor, and fix the motor at the same time; pull up positioning pin 45, pull sliding platform 41 forward to the detection station, and make the motor coaxially connected with coupling connector 381, and make positioning pin 45 fall into the corresponding positioning hole, power the motor through the line, close cabinet door 12, and start the motor and corresponding acquisition equipment for detection.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A motor noise and vibration detection device, characterized in that: Includes a cabinet (1), a detection cavity (11) is provided inside the cabinet (1), a detection platform (2) is provided on the bottom surface of the detection cavity (11), and sound-absorbing material is provided on the other inner walls of the detection cavity (11) except for the bottom surface; The testing platform (2) is equipped with a testing unit (3), which is used to provide a load for the motor being tested; The testing platform (2) is equipped with a clamping and positioning mechanism (4), which is used to clamp the motor being tested and to cooperate or separate it from the testing unit (3).

2. The motor noise and vibration detection device as described in claim 1, characterized in that: The testing unit (3) includes a first bracket (31), a second bracket (32), and a third bracket (33) that are fixedly connected to the testing platform (2) in sequence. The first bracket (31) is fixedly connected to a hysteresis load (34). The output end of the hysteresis load (34) is fixedly connected to one end of a first coupling (35). The other end of the first coupling (35) is fixedly connected to one end of an encoder (36). The encoder (36) is fixedly connected to the second bracket (32). The other end of the encoder (36) is fixedly connected to one end of a second coupling (37). The other end of the second coupling (37) is fixedly connected to one end of a shaft (38). The connecting shaft (38) is rotatably connected to the third bracket (33). The other end of the connecting shaft (38) is fixedly connected to a coupling connector (381).

3. The motor noise and vibration detection device as described in claim 2, characterized in that: The first bracket (31) is provided with a cavity to form a water channel, and the cavity is connected to the water cooling circulation equipment (39) through the water inlet pipe and the water outlet pipe.

4. The motor noise and vibration detection device as described in claim 1, characterized in that: The clamping and positioning mechanism (4) includes a sliding platform (41), a slider (42) fixedly connected to the bottom of the sliding platform (41), the slider (42) slidingly engaging with a slide rail (21), the slide rail (21) being fixedly connected to the detection platform (2); a positioning groove (43) for placing the motor to be tested is fixedly connected to the sliding platform (41), and a quick clamp (44) is fixedly connected to the sliding platform (41) on the side of the positioning groove (43), the quick clamp (44) being used to clamp the motor to be tested placed in the positioning groove (43).

5. The motor noise and vibration detection device as described in claim 4, characterized in that: A positioning pin (45) is slidably provided on the sliding platform (41) along the up and down direction. The bottom end of the positioning pin (45) passes through the sliding platform (41) and extends downward. A positioning block (22) is fixedly connected to the detection platform (2). The positioning block (22) is provided with a positioning hole that cooperates with the positioning pin (45). The positioning hole includes a positioning hole that cooperates with the positioning pin (45) when the motor being tested is in the detection position, and also includes a positioning hole that cooperates with the positioning pin (45) when the motor being tested is in the placement or removal position. A limiting bracket (23) is fixedly connected to the detection platform (2) in front of and behind the sliding platform (41) along the sliding direction. A limiting bolt (231) is threaded onto each limiting bracket (23). One end of the limiting bolt (231) is used to abut against the side of the sliding platform (41).

6. The motor noise and vibration detection device as described in claim 4, characterized in that: The output end of the quick clamp (44) is equipped with a three-axis accelerometer (441).

7. The motor noise and vibration detection device as described in claim 1, characterized in that: The bottom of the detection platform (2) is fixedly connected to at least two ribs (24), and the bottom of the ribs (24) is fixedly connected to a mesh bracket (25). The bottom of the mesh bracket (25) is fixedly connected to the bottom surface of the detection cavity (11) by a support leg.

8. The motor noise and vibration detection device as described in claim 1, characterized in that: The detection cavity (11) is formed by the cabinet (1) and the cabinet door (12) hinged to the side of the cabinet (1), and the sound-absorbing material is a sound-absorbing wedge (13).

9. The motor noise and vibration detection device as described in claim 1, characterized in that: The detection cavity (11) is also equipped with a camera (14) and a microphone (15).

10. The motor noise and vibration detection device as described in claim 1, characterized in that: A perforated plate (16) is fixedly connected to the cabinet (1) below the detection chamber (11), and a controller (17) is fixedly connected to the perforated plate (16).

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