Vibration testing device

Abstract

The utility model provides a vibration testing device, which comprises a clamping assembly and an axial fixing assembly, and is characterized in that the clamping assembly comprises a clamping part and a pushing part; the multiple clamping parts are arranged, and a clamping space is defined by the multiple clamping parts. The pushing part is connected with the clamping part and can push the multiple clamping assemblies to move in the direction close to each other or the direction away from each other so as to change the size of the clamping space in the radial direction. The axial fixing assemblies are arranged between the adjacent clamping parts. The driving motor stator can be fixed in the radial direction through the clamping assembly, the clamping part can tightly abut against the shell of the driving motor stator, and a gap between the clamping part and the shell of the driving motor stator is eliminated. Similarly, the axial fixing assembly is used for limiting and fixing the stator of the driving motor on the shaft, and an axial gap is eliminated, so that the accuracy of the experiment process is ensured, the reliability is high, and the data is accurate.

Description

Technical Field

[0001] This application relates to the field of vibration detection technology, and in particular to vibration testing devices. Background Technology

[0002] In the new energy hybrid vehicle industry, the motor is the core component of the power system. The structural performance of the motor mainly depends on the type and stability of the components. Among them, the stator winding binding method, the stator star point copper busbar connection method, and the stator busbar connection method are diverse. In order to ensure the safety and reliability of the stator, it is necessary to conduct a large number of vibration tests on various types of stators.

[0003] Currently, most methods use vibration testing of the hybrid gearbox assembly to provide feedback on the relevant performance of the motor stator. However, due to the long manufacturing cycle and high manufacturing cost of the assembly, the long testing cycle, the scarcity of testing resources, and the inability to provide timely feedback on the test results of various structures of the motor stator, this method is problematic.

[0004] Another Chinese patent, CN218381507U, discloses a general-purpose motor stator vibration testing fixture, which includes a vibration table adapter plate, a cylindrical stator mounting base, an upper cover plate, a three-phase line adapter block, radial and axial adjustment bushings, etc. However, this technical solution will generate gaps in the axial and radial directions during the testing process, which will ultimately lead to inaccurate test results.

[0005] Therefore, there is an urgent need for vibration testing devices to address, to some extent, the technical problems existing in the current technology. Utility Model Content

[0006] The purpose of this application is to provide a vibration testing device that improves the accuracy of test results to a certain extent.

[0007] This application provides a vibration testing device, comprising:

[0008] A clamping assembly includes a clamping part and a pushing part; multiple clamping parts are provided, and the multiple clamping parts surround a clamping space; the pushing part is connected to the clamping parts and can push the multiple clamping assemblies to move toward each other or toward each other, so as to change the size of the clamping space in the radial direction.

[0009] An axial fixing assembly is disposed between adjacent clamping portions;

[0010] A vibration detection assembly is provided with the clamping assembly and the axial fixing assembly; the vibration detection assembly includes a vibration transmission part that can transmit vibration through the clamping assembly to the workpiece to be tested, and a vibration detection part disposed on the workpiece to be tested and capable of detecting the vibration of the workpiece to be tested.

[0011] In the above technical solution, the clamping part further includes a clamping plate; the pushing part includes a rotating handle, a support base, and a locking member;

[0012] The rotating handle passes through the support base and is connected to the clamping plate. The rotating handle can drive the clamping plates to move toward each other or away from each other.

[0013] The locking member is disposed on the rotating handle. When the clamping plate moves to a preset position, the locking member can lock the rotating handle to the support base.

[0014] In the above technical solution, a limiting groove is further provided on the clamping plate, and a limiting end is formed at one end of the rotating handle facing the clamping plate, which can be limited to the limiting groove;

[0015] The limiting groove extends from the side wall near the rotating handle toward the interior of the clamping plate, and the limiting groove has a gradually expanding structure from the rotating handle to the clamping plate;

[0016] The limiting end has a tapered structure from the clamping plate to the rotating handle, which is adapted to the limiting groove.

[0017] In the above technical solution, the pushing part further includes a guide plate for guiding the clamping plate;

[0018] The guide plate is disposed between the clamping plate and the support base;

[0019] One of the guide plate and the clamping plate is provided with a guide groove, and the other has a guide rail that is adapted to the guide groove and extends along the moving direction of the clamping plate.

[0020] In the above technical solution, the vibration transmission part further includes a base plate, a support column, and a support plate;

[0021] The support column supports the support plate on the base plate, so that there is a gap between the support plate and the base plate;

[0022] The support plate has a placement hole for placing the test piece and extending through its axial sidewall;

[0023] Multiple clamping components are spaced apart on the support plate along the circumferential edge of the placement hole.

[0024] In the above technical solution, the axial fixing assembly further includes a clamping screw and a locking nut;

[0025] One end of the clamping screw is fixed to the base plate, and the other end extends upward along the axial direction of the support plate; the locking nut is threadedly connected to the end of the clamping screw away from the base plate.

[0026] In the above technical solution, the vibration testing device further includes an auxiliary fixing component;

[0027] The auxiliary fixing component is disposed on the support plate, and the auxiliary fixing component has a fixing position for fixing the lead wire of the test piece.

[0028] In the above technical solution, the auxiliary fixing component further includes an auxiliary fixing frame;

[0029] The auxiliary fixing bracket is disposed on the support plate, and the fixing position is formed on the end face opposite to the support plate.

[0030] In the above technical solution, a wear-resistant layer is further provided on the end face of the clamping plate facing the test piece and on the end face of the auxiliary fixing frame away from the support plate.

[0031] In the above technical solution, the clamping part further includes a clamping plate, and the pushing part includes a drive motor;

[0032] The output end of the drive motor is connected to the clamping plate to drive the clamping plate to move in a direction that is close to each other or in a direction that is far apart from each other.

[0033] Compared with the prior art, this application has the following beneficial effects:

[0034] This application utilizes a clamping assembly to fix the drive motor stator in the radial direction. The clamping part can tightly abut against the housing of the drive motor stator, eliminating the gap between the clamping part and the housing of the drive motor stator. Similarly, an axial fixing assembly is used to limit and fix the drive motor stator on the shaft, eliminating axial clearance. Therefore, it ensures the accuracy, high reliability, and precise data of the experimental process. In addition, the cooperation between the clamping part and the pushing part can improve the efficiency of changing different models of drive motor stators, thereby improving the efficiency of experimental testing. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the vibration testing device provided in this application from a first-view perspective;

[0037] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0038] Figure 3 A schematic diagram of the vibration testing device provided in this application from a second-view perspective;

[0039] Figure 4 for Figure 3 Enlarged view of point B in the image;

[0040] Figure 5 for Figure 3 Enlarged view of point C in the image;

[0041] Figure 6 A schematic diagram of the vibration testing device provided in this application from a third-person perspective;

[0042] Figure 7 A schematic diagram of the vibration transmission part in the vibration testing device provided in this application;

[0043] Figure 8 A schematic diagram of the clamping plate in the vibration testing device provided in this application;

[0044] Figure 9 A schematic diagram of the guide plate in the vibration testing device provided in this application from a first-view perspective;

[0045] Figure 10 A schematic diagram of the guide plate in the vibration testing device provided in this application from a second perspective;

[0046] Figure 11 A schematic diagram of the support base in the vibration testing device provided in this application from a first-view perspective;

[0047] Figure 12 A schematic diagram of the support base in the vibration testing device provided in this application from a second perspective;

[0048] Figure 13 A schematic diagram of the auxiliary fixing frame in the vibration testing device provided in this application from a first-view perspective;

[0049] Figure 14 A schematic diagram of the auxiliary fixing frame in the vibration testing device provided in this application from a second perspective;

[0050] Figure 15 A schematic diagram of the auxiliary fixing frame in the vibration testing device provided in this application from a second perspective;

[0051] Figure 16 for Figure 15 Enlarged view of point D in the image.

[0052] Reference numerals: 1-Clamping assembly; 101-Pushing part; 102-Clamping part; 103-Clamping space; 104-Clamping plate; 105-Rotating handle; 106-Support base; 107-Locking element; 108-Limiting groove; 109-Limiting end; 110-Guide plate; 111-Guide groove; 112-Guide rail; 113-Front locking nut; 114-Rear locking nut; 115-Positioning pin; 116-Positioning slot; 117-Bolt; 118-Positioning hole; 119-Fixing hole;

[0053] 2-Axial fixing assembly; 201-Clamping screw;

[0054] 301-Vibration transmission unit; 302-Vibration detection unit; 303-Base plate; 304-Support column; 305-Support plate; 306-Placement hole; 307-Vibration acceleration sensor;

[0055] 4-Auxiliary fixing component; 401-Fixing position; 402-Auxiliary fixing bracket; 403-Wear-resistant layer; 404-Circular positioning hole; 405-Oval positioning hole;

[0056] 5-Drive motor stator; 501-Stator three-phase connector. Detailed Implementation

[0057] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order presented herein; rather, changes that will be apparent upon understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity. The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application. Throughout this specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. Conversely, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between. As used herein, the term "and / or" includes any one of the relevant items listed and any combination of any two or more of them. Although terms such as "first," "second," and "third" may be used herein to describe individual components, assemblies, regions, layers, or portions, these components, assemblies, regions, layers, or portions are not limited by these terms. More precisely, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as such in the examples may also be referred to as the second component, assembly, region, layer, or part. For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element.Therefore, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., oscillating 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly. The terminology used herein is for describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. Variations in the shapes shown in the figures may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the figures but include changes in shape that occur during manufacturing. The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible as will be apparent upon understanding the disclosure of this application.

[0058] When testing the vibration performance of a motor, if the existing technology of testing the entire hybrid gearbox assembly is used, the testing cycle is long. If the patented equipment with publication number CN218381507U is used for testing, the test results are inaccurate. Based on the above-mentioned defects, this application provides a vibration testing device, taking the stator 5 of the drive motor as the part to be tested as an example. The following is a detailed description... Figures 1-16 This vibration testing device is described in detail.

[0059] The vibration testing device includes a clamping assembly 1, which includes a clamping part 102, such as... Figure 1 As shown, three clamping parts 102 are provided, which are arranged at intervals and surround a clamping space 103 for clamping the drive motor stator 5. Considering that the drive motor stator 5 has a cylindrical structure, the three clamping parts 102 are arranged in a ring at intervals to surround a circular clamping space 103, thereby adapting to the cylindrical structure of the drive motor stator 5 (in the actual test, the drive motor stator 5 is placed in the clamping space 103).

[0060] The clamping assembly 1 also includes a pushing part 101, such as Figure 2As shown, each clamping part 102 is connected to a corresponding pushing part 101. The pushing part 101 can push the clamping part 102 to move radially, so that the three clamping parts 102 can move toward each other, thereby reducing the size of the clamping space 103 in the radial direction. This allows the inner wall of the clamping part 102 to tightly abut against the drive motor stator 5, thereby achieving clamping and fixing of the drive motor stator 5 in the radial direction; or it can allow the three clamping parts 102 to move toward each other, thereby expanding the size of the clamping space 103 in the radial direction. The above configuration allows the clamping assembly 1 to adapt to vibration testing of drive motor stators 5 of different models and sizes. Furthermore, when placing the drive motor stator 5, the pushing part 101 first drives the clamping part 102 to move in opposite directions, expanding the size of the clamping space 103 to facilitate the placement of the drive motor stator 5. After the drive motor stator 5 is placed, the pushing part 101 again drives the clamping part 102 to move in a direction closer together, reducing the size of the clamping space 103, so that the drive motor stator 5 is tightly clamped in the clamping space 103. In summary, the clamping assembly 1 achieves the clamping and fixing of the drive motor stator 5 in the radial direction.

[0061] The vibration testing device also includes an axial fixing component 2, combined with... Figure 1 As shown, the axial fixing component 2 is disposed between adjacent clamping portions 102; therefore, for the above three clamping portions 102, three axial fixing components 2 are provided. In actual operation, the axial fixing component 2 extends along the axial direction of the drive motor stator 5 and passes through the housing of the drive motor stator, thereby achieving axial fixation of the drive motor stator 5.

[0062] In summary, the clamping assembly 1 enables the radial fixation of the drive motor stator 5, and the clamping part 102 tightly abuts against the housing of the drive motor stator 5, eliminating the gap between the clamping part 102 and the housing of the drive motor stator 5. Similarly, the axial fixing assembly 2 achieves the limiting fixation of the drive motor stator 5 on the shaft, eliminating axial clearance, thus ensuring the accuracy, high reliability, and precise data of the experimental process. Furthermore, the cooperation between the clamping part 102 and the pushing part 101 improves the efficiency of changing different models of drive motor stators 5, thereby improving the efficiency of experimental testing.

[0063] It is worth noting that this application can not only detect vibration of the drive motor stator 5, but also detect the engine stator, and can also detect vibration of various structures that require vibration detection, such as the drum vibration detection of a washing machine.

[0064] The vibration testing device also includes a vibration detection component, which is equipped with a clamping component 1 and an axial fixing component 2. The vibration detection component includes a vibration transmission unit 301 that transmits vibration through the clamping component 1 to the workpiece under test, and a vibration detection unit 302 disposed on the workpiece under test and capable of detecting the vibration of the workpiece. In actual use, after the drive motor stator 5 is fixed using the clamping component 1 and the axial fixing component 2, the vibration transmission unit 301 transmits vibration acceleration to the drive motor stator 5 through the clamping component 1, and the vibration detection unit 302 detects the vibration generated by the drive motor stator 5.

[0065] In this embodiment, the clamping part 102 includes a clamping plate 104; the pushing part 101 includes a rotating handle 105, a support base 106, and a locking member 107. Specifically, in conjunction with Figure 2 and refer to Figure 8 As shown, the end face of the clamping plate 104 facing the drive motor stator 5 is curved, which is adapted to the outer shell of the drive motor stator 5, so that the clamping plate 104 can fit tightly against the outer shell of the drive motor stator 5.

[0066] Specifically, combined Figure 2 As shown, the rotating handle 105 passes through the support base 106 and is connected to the clamping plate 104. Optionally, the support base 106 and the rotating handle 105 are connected by a thread. Rotating the rotating handle 105 can change the length of the rotating handle 105 extending out of the support base 106. Since the rotating handle 105 passes through the support base 106 and is connected to the clamping plate 104, rotating the rotating handle 105 can drive the clamping plate 104 to move toward each other or away from each other. That is, rotating the rotating handle 105 can drive the clamping plate 104 to move in the radial direction, thereby realizing the adjustment of the clamping space 103.

[0067] Specifically, it still combines Figure 2 As shown, the locking component 107 includes a front locking nut 113 and a rear locking nut 114. The front locking nut 113 is threaded onto the rotating handle 105 and is located between the support base 106 and the clamping plate 104. The rear locking nut 114 is threaded onto the rotating handle 105 and is located on the side of the support base 106 away from the clamping plate 104. In actual use, when the clamping plate 104 moves to a preset position (the preset position refers to the position where the size of the clamping space 103 enclosed by multiple clamping plates 104 reaches the standard value), the front locking nut 113 and the rear locking nut 114 are screwed on and locked against the support base 106, thus positioning the rotating handle 105. Since the rotating handle 105 is connected to the clamping plate 104, the position of the clamping plate 104 is also positioned, thereby ensuring that the drive motor stator 5 is positioned in the clamping space 103.

[0068] In this embodiment, combined with Figure 2 And refer to Figure 8 As shown, a limiting groove 108 is formed on the clamping plate 104, and a limiting end 109 is formed at one end of the rotating handle 105 facing the clamping plate 104, which can be limited within the limiting groove 108. Specifically, the limiting groove 108 extends from the side wall near the rotating handle 105 toward the interior of the clamping plate 104, and the limiting groove 108 has a gradually expanding structure from the rotating handle 105 to the clamping plate 104. Optionally, the limiting groove 108 includes a first groove and a second groove communicating with the first groove. The first groove penetrates the end face of the clamping plate 104 near the support base 106, and the width of the first groove is smaller than the width of the second groove. Specifically, the limiting end 109 has a gradually narrowing structure from the clamping plate 104 to the rotating handle 105 that matches the limiting groove 108. Optionally, the limiting end 109 includes a first end and a second end connected to the first end. The diameter of the first end is smaller than the diameter of the second end, and the diameter of the first end is slightly smaller than the width of the first groove, and the diameter of the second end is slightly smaller than the width of the second groove.

[0069] During installation, the limiting end 109 of the rotating handle 105 is inserted from above the limiting groove 108, the second end is inserted into the second groove, and the first end is inserted into the first groove. Since the limiting groove 108 has a gradually expanding structure from the rotating handle 105 to the clamping plate 104, and the limiting end 109 has a gradually contracting structure from the clamping plate 104 to the rotating handle 105 that matches the limiting groove 108, the limiting end 109 will be positioned within the limiting groove 108. Therefore, when the rotating handle 105 moves radially, it will simultaneously move the clamping plate 104 radially.

[0070] In this embodiment, to prevent the clamping plate 104 from deviating when driven to move radially by a rotating shaft, the pushing unit 101 further includes a guide plate 110 for guiding the clamping plate 104. Specifically, the guide plate 110 is disposed between the clamping plate 104 and the support base 106 and extends radially. One of the guide plate 110 and the clamping plate 104 has a guide groove 111, and the other has a guide rail 112 that matches the guide groove 111 and extends along the moving direction of the clamping plate 104. Figure 2 and refer to Figure 8 and Figure 9As shown, a guide inverted T-shaped groove is provided below the limiting groove 108 of the clamping plate 104, and guide rails 112 are formed on both sides of the guide plate 110 in the width direction. The guide inverted T-shaped groove is adapted to the guide rails 112. That is to say, when the rotating handle 105 drives the clamping plate 104 to move in the radial direction, the lower part of the clamping plate 104 can move on the guide plate 110, ensuring the accuracy of the movement direction of the clamping plate 104.

[0071] In this embodiment, combined with Figure 6 and Figures 9-10 As shown, the vibration transmission unit 301 includes a base plate 303, support columns 304, and a support plate 305. The support columns 304 support the support plate 305 on the base plate 303, creating a gap between the support plate 305 and the base plate 303. Optionally, multiple support columns 304 are provided, spaced apart to improve support stability. The support plate 305 has a placement hole 306 at its center, penetrating its axial sidewall, for placing the drive motor stator 5. Multiple clamping assemblies 1 are spaced apart along the circumferential edge of the placement hole 306 on the support plate 305.

[0072] In actual use, since the drive motor stator 5 includes windings and a housing, and the height of the windings is greater than the height of the housing, when placing the drive motor stator 5, the windings will pass through the placement hole 306, and the housing will abut against the support plate 305. Therefore, adjusting the height of the support column 304 can adjust the distance between the support plate 305 and the base plate 303, thereby allowing the placement of drive motor stator 5 windings with different heights.

[0073] Furthermore, combined Figure 15 As shown, positioning pins 115 are provided on the support plate 305 at positions corresponding to the support base 106 and the guide plate 110. Positioning holes 118 are provided on the end faces of the support base 106 and the guide plate 110 facing the support plate 305. During installation, the positioning holes 118 correspond to the positioning pins 115, and the positioning pins 115 are used to position the support base 106 and the guide plate 110.

[0074] In addition, both the support base 106 and the guide plate 110 are provided with fixing holes 119. After the support base 106 and the guide plate 110 are positioned, the support base 106 and the guide plate 110 are fixed to the support base 106 by passing the bolts 117 through the fixing holes 119.

[0075] In this embodiment, the axial fixing assembly 2 includes a clamping screw 201; one end of the clamping screw 201 is fixed to the base plate 303, and the other end extends upward along the axial direction of the support plate 305. Furthermore, the support plate 305 has a positioning slot 116 corresponding to the position of the clamping screw 201. When the drive motor stator 5 is placed, the protrusion on the outer shell of the drive motor stator 5 corresponds to the positioning slot 116 and is fitted onto the clamping screw 201.

[0076] When the protrusion on the housing of the drive motor stator 5 is fitted onto the clamping screw 201 (which can be understood as the clamping screw 201 passing through the protrusion on the housing of the drive motor stator 5), the locking nut is screwed onto the protrusion on the housing of the drive motor stator 5 through which the clamping screw 201 passes. This achieves the purpose of fixing the drive motor stator 5 to the clamping screw 201 using the locking nut, thereby positioning the drive motor stator 5 in the axial direction using the clamping screw 201.

[0077] In this embodiment, combined with Figure 16 and Figure 13 As shown, the vibration testing device also includes an auxiliary fixing component 4; the auxiliary fixing component 4 is disposed on the support plate 305 and is used to fix the stator three-phase wire connector 501 of the drive motor stator 5.

[0078] Specifically, the auxiliary fixing component 4 includes an auxiliary fixing frame 402; the auxiliary fixing frame 402 is disposed on the support plate 305, and a fixing position 401 is formed on the end face opposite to the support plate 305. Optionally, the auxiliary fixing frame 402 is inverted L-shaped.

[0079] Furthermore, referring to Figure 14 and Figure 15 As shown, the auxiliary fixing bracket 402 has a circular positioning hole 404 and an elliptical positioning hole 405 at one end facing the support base 106; a positioning pin 115 is provided at the position of the support base 106 facing the auxiliary fixing bracket 402. When installing the auxiliary fixing bracket 402, ensure that the circular positioning hole 404 corresponds to the circular positioning pin 115, and the elliptical positioning hole 405 is positioned with the elliptical positioning pin 115, thereby achieving the positioning of the auxiliary fixing bracket 402. Furthermore, the auxiliary fixing bracket 402 also has a fixing hole 119, through which a bolt 117 can pass to fix the auxiliary fixing bracket 402 to the support base 106.

[0080] In this embodiment, since this application relates to a vibration testing device, in order to prevent damage to the housing of the drive motor stator 5 due to vibration friction between the clamping plate 104 and the housing of the drive motor stator 5 during vibration, a wear-resistant layer 403 is provided on the end face of the clamping plate 104 facing the test piece. Optionally, the wear-resistant layer 403 is made of black polyurethane grease. Similarly, a wear-resistant layer 403 is provided on the end face of the auxiliary fixing frame 402 facing away from the support plate 305 to prevent damage to the stator three-phase wire connector 501 due to vibration friction.

[0081] In this embodiment, another feasible structure is provided for the clamping part 102. Specifically, the clamping part 102 includes a clamping plate 104, and the pushing part 101 includes a drive motor; the output end of the drive motor is connected to the clamping plate 104, and can drive the clamping plate 104 to move in a direction that is close to each other or in a direction that is far away from each other.

[0082] In this embodiment, combined with ​ As shown, the vibration detection unit 302 includes multiple vibration acceleration sensors 307, which are spaced apart on the housing of the drive motor stator 5. It is worth noting that the vibration acceleration sensors 307 are existing technology and can be directly purchased and applied.

[0083] In summary, the vibration testing process using this application is as follows:

[0084] Step 100: According to the requirements of national standard 18488, extract the vibration acceleration of the stator under the corresponding working conditions. The vibration acceleration in the X direction is 151.4g, the vibration acceleration in the Y direction is 126.6g, and the vibration acceleration in the Z direction is 128.3g.

[0085] Step 200: The drive motor stator 5 is installed on the support base plate 303, pre-tightened with the clamping screw 201, and pre-clamped with the clamping plate 104;

[0086] Step 300: Tighten the rotating handle 105 with a torque wrench to a torque of 140 Nm, and tighten the clamping screw 201 with a torque wrench to a torque of 45 Nm;

[0087] Step 400: Arrange multiple vibration acceleration sensors 307 on the housing of the drive motor stator 5;

[0088] Step 500: Connect a resistance wire to the stator three-phase wire connector 501 of the stator 5 of the drive motor. Connect the resistance wire to the monitor to monitor the state of the stator during vibration. If damage occurs, the monitor will alarm, the test will be stopped, the cause will be analyzed, and the test will be repeated after optimization and improvement.

[0089] Step 600: After the signal connection is completed, the test bench (the test bench is an external device, which can be understood as a test bench) is powered on and accelerations in all directions are applied one by one according to the test conditions; the vibration can be transmitted to the stator 5 of the drive motor through the clamping assembly 1 and the axial fixing assembly 2.

[0090] Step 700: After the test is completed, turn off the power to the test bench, loosen the rotating handle 105, loosen the clamping screw 201, and remove the drive motor stator 5.

[0091] In summary, adopting this application can achieve the following expected effects:

[0092] (1) Saves test time: Compared with the test method for motor stator vibration of the assembly, the test efficiency of this application is improved by more than 70%, which significantly shortens the time required for each test and enables a more comprehensive evaluation of the vibration characteristics of the motor stator.

[0093] (2) Save on testing costs: Compared with the method of testing the vibration of the motor stator of the assembly, it reduces the demand for other components of the assembly. At the same time, this device is versatile and reusable, which greatly reduces material costs and testing costs.

[0094] (3) Improve testing efficiency: By connecting resistance wires to the stator three-phase busbars, the stator vibration process status is monitored. Once damage occurs, the monitor alarms and the test is stopped. The cause is analyzed, and the test is repeated after optimization and improvement. Compared with the stator assembly test, the stator test efficiency is greatly improved.

[0095] (4) Rapid feedback of test results: Through precise collection and in-depth analysis of vibration data, the device can quickly reveal the specific performance of the stator under different working conditions, provide timely feedback on potential weaknesses, and help engineers quickly understand the structural performance of the stator. This information can be directly used to guide the design team to improve and optimize the structure, thereby improving the safety and reliability of the product.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vibration testing device, characterized in that, include: A clamping assembly includes a clamping part and a pushing part; multiple clamping parts are provided, and the multiple clamping parts surround a clamping space; the pushing part is connected to the clamping parts and can push the multiple clamping assemblies to move toward each other or toward each other, so as to change the size of the clamping space in the radial direction. An axial fixing assembly is disposed between adjacent clamping portions; A vibration detection assembly is provided with the clamping assembly and the axial fixing assembly; the vibration detection assembly includes a vibration transmission part that can transmit vibration through the clamping assembly to the workpiece to be tested, and a vibration detection part disposed on the workpiece to be tested and capable of detecting the vibration of the workpiece to be tested.

2. The vibration testing device according to claim 1, characterized in that, The clamping part includes a clamping plate; the pushing part includes a rotating handle, a support base, and a locking element. The rotating handle passes through the support base and is connected to the clamping plate. The rotating handle can drive the clamping plates to move toward each other or away from each other. The locking member is disposed on the rotating handle. When the clamping plate moves to a preset position, the locking member can lock the rotating handle to the support base.

3. The vibration testing device according to claim 2, characterized in that, The clamping plate has a limiting groove, and the end of the rotating handle facing the clamping plate has a limiting end that can be limited to the limiting groove. The limiting groove extends from the side wall near the rotating handle toward the interior of the clamping plate, and the limiting groove has a gradually expanding structure from the rotating handle to the clamping plate; The limiting end has a tapered structure from the clamping plate to the rotating handle, which is adapted to the limiting groove.

4. The vibration testing device according to claim 2, characterized in that, The pushing part also includes a guide plate for guiding the clamping plate; The guide plate is disposed between the clamping plate and the support base; One of the guide plate and the clamping plate is provided with a guide groove, and the other has a guide rail that is adapted to the guide groove and extends along the moving direction of the clamping plate.

5. The vibration testing device according to claim 2, characterized in that, The vibration transmission part includes a base plate, a support column, and a support plate; The support column supports the support plate on the base plate, so that there is a gap between the support plate and the base plate; The support plate has a placement hole for placing the test piece and extending through its axial sidewall; Multiple clamping components are spaced apart on the support plate along the circumferential edge of the placement hole.

6. The vibration testing device according to claim 5, characterized in that, The axial fixing assembly includes a clamping screw and a locking nut; One end of the clamping screw is fixed to the base plate, and the other end extends upward along the axial direction of the support plate; the locking nut is threadedly connected to the end of the clamping screw away from the base plate.

7. The vibration testing device according to claim 5, characterized in that, The vibration testing device also includes auxiliary fixing components; The auxiliary fixing component is disposed on the support plate, and the auxiliary fixing component has a fixing position for fixing the lead wire of the test piece.

8. The vibration testing device according to claim 7, characterized in that, The auxiliary fixing component includes an auxiliary fixing frame; The auxiliary fixing bracket is disposed on the support plate, and the fixing position is formed on the end face opposite to the support plate.

9. The vibration testing device according to claim 8, characterized in that, Wear-resistant layers are provided on the end face of the clamping plate facing the workpiece to be tested and on the end face of the auxiliary fixing frame away from the support plate.

10. The vibration testing device according to claim 2, characterized in that, The clamping part includes a clamping plate, and the pushing part includes a drive motor; The output end of the drive motor is connected to the clamping plate to drive the clamping plate to move in a direction that is close to each other or in a direction that is far apart from each other.

Images