Six-dimensional vibration test structure

Abstract

The utility model discloses a six -dimensional vibration test structure, this test structure includes a vibration support, sets up the test platform on vibration support, installs the vibration test subassembly in one side of test platform, sets up at least a first sensor of the test platform opposite side of vibration test subassembly, sets up at least a second sensor respectively in the other two sides of test platform and sets up the limiting component on test platform, and the limiting component is used for limiting the article to be measured on the test platform, and the vibration test subassembly and first sensor, each second sensor constitute the multidimensional test structure of the real -time vibration of each test point on the detection test platform, the utility model effectively improved the accuracy of the utility model vibration test, guaranteed that vibration test normally and effectively carried out.

Description

Technical Field

[0001] This utility model relates to the technical field of testing instruments, and specifically to a six-dimensional vibration testing structure. Background Technology

[0002] With the development of technology, cooling fans are increasingly widely used in computers, home appliances, machinery, new energy vehicles, energy storage, and other fields, especially in new energy vehicles, where they are used in large quantities, such as in car seats. However, if a cooling fan rotates unstablely or vibrates excessively during operation, it will affect its heat dissipation effect. Moreover, if a cooling fan is in a state of vibration for a long time, it may accelerate the wear and tear of hardware (such as bearings and motors), shortening the lifespan of the cooling fan and other related hardware. In extreme cases, excessive vibration may even damage the physical structure of the cooling fan, such as blade breakage. This not only affects heat dissipation efficiency but may also damage the equipment and other components. Therefore, vibration testing is often required during the production of cooling fans to ensure the yield rate and to facilitate the removal of defective products for repair / rework.

[0003] Currently, most manufacturers rely on manual vibration testing of their products. However, this method is only effective for products with high vibration levels, and can easily lead to misjudgments for products with low vibration levels. To improve the accuracy of vibration testing, there are existing vibration testing benches that test two- or three-dimensional vibrations on a single platform. However, these benches cannot accurately reflect the true vibration levels of a product. Furthermore, the rapid development of the new energy vehicle industry has led to increasingly stringent requirements for cooling fans used in ventilated seats. Defective products can reduce the user experience and damage the reputation of car brands. Therefore, it is necessary to conduct full inspections on all products before they leave the factory to ensure the accuracy of vibration testing for cooling fans and guarantee a high yield rate. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a six-dimensional vibration testing structure. This testing structure effectively improves the accuracy of vibration testing and ensures that vibration testing can be carried out normally and effectively.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A six-dimensional vibration testing structure includes a vibration support, a test platform mounted on the vibration support, a vibration testing component mounted on one side of the test platform, at least one first sensor mounted on the other side of the test platform opposite to the vibration testing component, at least one second sensor mounted on the other two sides of the test platform, and a limiting component mounted on the test platform. The limiting component is used to limit the object to be tested to be positioned on the test platform. The vibration testing component, the first sensor, and each of the second sensors constitute a multi-dimensional testing structure for detecting the real-time vibration of each test point on the test platform.

[0006] The vibration support includes a base, at least three columns on the base, a vibrating element fixed to one end of each column, and a connecting element on each vibrating element. Each connecting element is fixedly connected to the test bench. The vibrating element is a silicone block or a spring.

[0007] The vibration testing assembly includes at least one fixed frame connected to the test bench and at least three third sensors mounted on the fixed frame.

[0008] The mounting bracket includes a fixed section on one side of the test bench and at least one extension section at the upper and lower ends of the fixed section. Each extension section is provided with at least one third sensor. Alternatively, the mounting bracket includes a fixed section on one side of the test bench and at least one extension section at the upper or lower end of the fixed section. At least one third sensor is provided at the connection between the fixed section and the test bench, and at least one third sensor is also provided at each end of the extension section.

[0009] The mounting bracket includes a fixed section located on the bottom surface of one side of the test bench and at least one extension section located at the lower end of the fixed section. At least one third sensor is provided at the connection between the fixed section and the test bench, and at least one third sensor is also provided at each end of the extension section.

[0010] The first sensor is connected to the test bench via a first connecting seat. The first sensor protrudes from the upper surface of the test bench, and / or the first sensor is flush with the side of the test bench, and / or the first sensor protrudes from the lower surface of the test bench, and / or the first sensor is located on the bottom surface of the test bench. The first sensor and the vibration test assembly are symmetrically arranged on both sides.

[0011] Each of the second sensors is connected to the test bench via a second connector. The second sensor protrudes from the upper surface of the test bench, and / or is flush with the side of the test bench, and / or protrudes from the lower surface of the test bench. Each of the second sensors is symmetrically arranged on the other two sides of the test bench.

[0012] The test bench has a setting slot in the middle for positioning and placing the item to be tested. The bottom surface of the middle part of the setting slot has at least one clearance recess or a first clearance hole for avoiding the working area of ​​the item to be tested.

[0013] The limiting component includes at least three banana connectors disposed on the upper surface of the test platform, each banana connector cooperating to limit the test item to be tested on the test platform.

[0014] The limiting assembly includes a pressure plate connected to the test table on one side via a hinge, a spring latch located between the other side of the pressure plate and the test table, and at least two pressure blocks located on the side of the pressure plate facing the test table.

[0015] The beneficial effects of this utility model are as follows: 1. The test bench is equipped with a first sensor, a second sensor, and a vibration testing component on each side or bottom. At least six test points are set on the X, Y, and Z axes to form a six-dimensional test structure. This allows for multi-dimensional acquisition of the acceleration of each test point during the test. The vibration of each test point is then calculated by the test terminal, thereby effectively improving the accuracy of the vibration test. Based on the obtained six-dimensional test data, the user can more accurately calculate the vibration of the test object at each test point during operation, and accurately deduce the position where the test object needs dynamic balance correction. 2. The setting of its limiting components can effectively limit the test item during the test process, so that the test item can be stably placed on the test table, ensuring that the vibration of the test item during the operation can be transmitted to the test table normally or even synchronously, thereby further improving the accuracy of vibration testing. 3. The vibration components on each column allow the test bench to be flexibly connected to the column, which can effectively ensure that the test bench can vibrate synchronously when the object under test vibrates. Each test point in the six-dimensional test structure can effectively acquire the vibration data of the test bench, ensuring that the vibration test can be carried out normally and effectively. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of form one in embodiment 1 of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of form two in Embodiment 1 of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of form three in embodiment 1 of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of form four in Embodiment 1 of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of one form of the fixing frame of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the second form of the fixing frame of this utility model.

[0022] Figure 7 This is an exploded structural diagram of the column, vibrating component, and connecting component of this utility model.

[0023] Figure 8 This is a three-dimensional structural diagram of the banana connector of this utility model.

[0024] Figure 9 This is a three-dimensional structural schematic diagram of Embodiment 2 of this utility model.

[0025] Figure 10 This is a three-dimensional structural diagram of the limiting component in the open state according to Embodiment 2 of this utility model.

[0026] Figure 11 This is a three-dimensional structural diagram of the vibration-free support state of Embodiment 2 of this utility model.

[0027] Explanation of icon numbers: 1-Vibration bracket; 11-Base; 12-Column; 121-First insertion hole; 13-Vibrating component; 131-Insertion part; 14-Connector; 2-Test table; 21-Setting slot; 22-First clearance hole; 23-First mounting protrusion; 24-Second mounting protrusion; 3-Vibration test assembly; 31-Fixing frame; 311-Fixing section; 312-Extension section; 313-Second clearance hole; 314-Fixing plate; 32-Third sensor; 4-The 1. Sensor; 41-First connecting seat; 5-Second sensor; 51-Second connecting seat; 6-Limiting assembly; 61-Banana connector; 611-Limiting section; 611a-Elastic protrusion; 612-Connecting section; 613-Limiting protrusion; 62-Hinge; 63-Pressure plate; 631-First fixing part; 632-Second fixing part; 633-Third clearance hole; 64-Spring buckle; 65-Pressure block; 66-First connecting piece; 67-Second connecting piece. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings: Specific Implementation

[0029] like Figure 1-11As shown, this utility model relates to a six-dimensional vibration testing structure, which includes a vibration support 1, a test platform 2 mounted on the vibration support 1, a vibration testing component 3 mounted on one side of the test platform 2, at least one first sensor 4 mounted on the other side of the test platform 2 opposite to the vibration testing component 3, at least one second sensor 5 mounted on the other two sides of the test platform 2, and a limiting component 6 mounted on the test platform 2. The limiting component 6 is used to limit the test object (not shown) to be positioned on the test platform 2. The vibration testing component 3, the first sensor 4, and each of the second sensors 5 constitute a multi-dimensional vibration testing structure for detecting the real-time vibration of each test point on the test platform 2.

[0030] like Figure 1-4 As shown in Figures 7, 9, and 10, the vibration support 1 includes a base 11, at least three columns 12 mounted on the base 11, vibrating elements 13 respectively fixed to one end of each column 12, and connecting members 14 respectively mounted on each vibrating element 13. Each connecting member 14 is fixedly connected to the test bench 2. Preferably, the vibrating element 13 is a silicone block or a spring. When the vibrating element 13 is a silicone block, each of its two ends is provided with a plug-in portion 131. One end of each column 12 is provided with a first plug-in hole 131, which is connected to one of the plug-in portions 131. One end of the connector 14 is provided with a second insertion hole (not shown), which is connected to another insertion part 141. The arrangement of each vibrating element 13 forms a flexible connection between each column 12 and the connector 14. That is, the test platform 2, which is fixedly connected to each connector 14, is not rigidly connected to the column 12. When the test object works on the test platform 2 and vibrates, the vibrating test object will transmit the vibration to the test platform 2. At this time, the test platform 2 vibrates together with the test object with the cooperation of each vibrating element 13, so that the aforementioned test points can capture the vibration data.

[0031] like Figure 1-4 As shown in Figures 9 and 10, the vibration testing assembly 3 includes at least one fixed frame 31 connected to the test bench 2 and at least three third sensors 32 disposed on the fixed frame 31. The arrangement of each third sensor 32 in the vibration testing assembly 3 adds multiple vibration testing points to the test bench 2 in space. Together with the first sensor 4 and each second sensor 5, it forms a multi-dimensional vibration quantity acquisition, providing data support for improving the vibration quantity testing accuracy of the test bench 2.

[0032] like Figure 1-6As shown in Figures 9-11, the mounting bracket 31 includes a fixed section 311 disposed on one side of the test bench 2 and at least one extension section 312 disposed at the upper and lower ends of the fixed section 311. Each extension section 312 is provided with at least one third sensor 32. Alternatively, the mounting bracket 31 includes a fixed section 311 disposed on one side of the test bench 2 and at least one extension section 312 disposed at the upper or lower end of the fixed section 311. At least one third sensor 32 is provided at the connection between the fixed section 311 and the test bench 2, and at least one third sensor 32 is also provided at each end of the extension section 312.

[0033] like Figure 1-6 As shown in Figures 9-11, the mounting bracket 31 includes a fixed section 311 located on the bottom surface of one side of the test bench 2 and at least one extension section 312 located at the lower end of the fixed section 311. At least one third sensor 32 is provided at the connection between the fixed section 311 and the test bench 2, and at least one third sensor 32 is also provided at each end of the extension section 312.

[0034] By designing the fixed section 311 and extension section 312 of the fixed frame 31 and setting the third sensor 32 on the fixed frame 31, multiple test points are added in space in addition to the first sensor and the second sensor, enabling the present invention to achieve multi-dimensional vibration data acquisition in space.

[0035] In addition, such as Figure 1-6 As shown in Figures 9-11, the fixed end 311 of the fixing bracket 31 is provided with at least one fixing piece 314 for mounting the third sensor 32 and a second clearance hole 313 provided on one side of the fixing piece 314. The second clearance hole 313 provides installation space for the third sensor 32.

[0036] like Figure 1-4 As shown in Figures 9-11, the first sensor 4 is connected to the test bench 2 via a first connecting seat 41. The first sensor 4 protrudes from the upper surface of the test bench 2, and / or the first sensor 4 is flush with the side of the test bench 2, and / or the first sensor 4 protrudes from the lower surface of the test bench 2, and / or the first sensor 4 is located on the bottom surface of the test bench 2. The first sensor 4 and the vibration test assembly 3 are symmetrically arranged on both sides.

[0037] like Figure 1-4 As shown in Figures 9-11, each of the second sensors 5 is connected to the test bench 2 via a second connecting seat 51. The second sensor 5 protrudes from the upper surface of the test bench 2, and / or the second sensor 5 is flush with the side of the test bench 2, and / or the second sensor 5 protrudes from the lower surface of the test bench 2. Each of the second sensors 5 is symmetrically arranged on the other two sides of the test bench 2.

[0038] like Figure 1-4As shown in Figures 9-11, a setting slot 21 is provided in the middle of the test bench 2. The setting slot 21 is used to position and place the item to be tested. The bottom surface of the middle part of the setting slot 21 is provided with at least one clearance recess (not shown) or a first clearance hole 22. The clearance recess or the first clearance hole 22 is used to avoid the working area of ​​the item to be tested. Specifically, the setting of the clearance recess or the first clearance hole 22 can effectively ensure that the item to be tested works normally and will not be unable to operate normally due to interference from the setting slot 21 of the test bench.

[0039] like Figure 1-4 As shown, the limiting component 6 includes at least three banana-shaped connectors 61 disposed on the upper surface of the test platform 2. Each banana-shaped connector 61 cooperates to limit the test item to be tested on the test platform 2. Specifically, each banana-shaped connector 61 includes a limiting segment 611 and a connecting segment 612 disposed on one section of the limiting segment 611. Each limiting segment 611 is provided with two or more elastic protrusions 611a. When the test item is placed between the limiting segments 611, the elastic protrusions 611a on each limiting segment 611 are subjected to the force of the test item and undergo elastic deformation. At this time, each elastic protrusion 611a subjected to the force of the test object reacts to the force of the test object under the action of elastic stress and fails to reset, thus forming a limit on the test object; in addition, each connecting section 612 is provided with an external thread (not shown), and each banana connector 61 is threaded to the test table 2 through the external thread on the connecting section 612; at the same time, in order to ensure that the installation height of the banana connectors 61 is consistent and to ensure that each banana connector 61 can properly cooperate and limit, a limiting protrusion 613 is also provided between the limiting section 611 and the connecting section 612.

[0040] It should be noted that the first sensor 4, the second sensor 5, and the third sensor 32 of this utility model are preferably accelerometers. When the product under test is working on the test bench 2, the acceleration generated by the vibration of the object under test is measured at each test point and converted into an electrical signal proportional to the acceleration for output and feedback to the test system. It should also be noted that the first sensor 4, the second sensor 5, and the third sensor 32 of this utility model can also be vibration sensors. The selection of the type of the first sensor 4, the second sensor 5, and the third sensor 32 can be based on the actual testing needs of the product and cost control factors, and is not limited here.

[0041] Before use, the first sensor 4, each of the second sensors 5 and each of the third sensors 32 are connected to the computer terminal (not shown) through the data acquisition instrument (not shown). The computer terminal uses LabVIEW software to set the vibration test calculation method so that the computer terminal can calculate the vibration of each test point after acquiring the detection data of the first sensor 4, each of the second sensors 5 and each of the third sensors 32.

[0042] In use, the item to be tested is first placed in the placement slot 21, and the limiting component 6 is used to limit the item to be tested on the test platform 2, so that the item to be tested is in effective contact with the test platform 2. Then, the computer terminal and data acquisition instrument are turned on. Next, the item to be tested is powered on to make it work. At this time, the test platform 2 will perform multi-dimensional detection of the acceleration of each test point through the aforementioned first sensor 4, each second sensor 5 and each third sensor 32, and convert the detected acceleration value into an electrical signal for output, which is fed back to the data acquisition instrument. The data acquisition instrument transmits the received electrical signal to the computer terminal, and the computer terminal calculates the vibration of each test point, thereby testing the vibration of each item to be tested in order to eliminate defective products. Specific Implementation

[0043] like Figure 9-11 As shown, this utility model discloses a six-dimensional vibration testing structure, whose limiting component 6 includes a pressure plate 63 connected to the test platform 2 on one side via a hinge 62, a spring latch 64 disposed between the other side of the pressure plate 63 and the test platform 2, and at least two pressure blocks 65 disposed on the side of the pressure plate 63 facing the test platform 2. It should be noted that the spring latch 64 is a known conventional part that can be directly used after being purchased from outside, and various structures of the spring latch 64 that can be purchased can meet the limiting requirements of this utility model without the need for separate design. Therefore, the specific structure of the spring latch 64 of this utility model is not limited here.

[0044] Furthermore, such as Figure 9-11 As shown, one side of the aforementioned hinge 62 is connected to the test platform 2 via a first connecting piece. A first mounting protrusion 23 is provided on the bottom surface of the side of the test platform 2 where the first connecting piece is located. The first mounting protrusion 23 is connected to the first sensor 4 via a first connecting seat 41. A second mounting protrusion 24 is provided on the bottom surface of the side of the test platform 2 opposite to the hinge 62. The second mounting protrusion 24 is connected to one side of the spring buckle 64 via a second connecting piece 67. At the same time, the aforementioned third sensor 32 is installed at the connection between the second connecting piece 67 and the second mounting protrusion 24.

[0045] Furthermore, such as Figure 9-11 As shown, one side of the aforementioned pressure plate 63 is provided with a first fixing part 631 corresponding to the hinge 62. The first fixing part 631 is fixedly connected to the other side of the hinge 62. The pressure plate 63 is provided with a second fixing part 632 on the side opposite to the first fixing part 631. The second fixing part 632 is fixedly connected to the other side of the spring buckle 64.

[0046] In addition, in order to ensure that the test item can work normally when the limiting component 6 is fixed and limited, a third clearance hole 633 is also provided on the pressure plate 63. The setting of the third clearance hole 633 can effectively prevent the pressure plate 63 from structurally interfering with the working part of the test item, and effectively ensure that the test item works normally during the test.

[0047] It should be noted that when using this utility model, first unfasten the spring latch 64, lift the pressure plate 63, place the item to be tested in the setting slot 21, then reset the pressure plate 63 and cover the item to be tested. Subsequently, fasten the spring latch 64. At this time, the pressure plate 63, together with each pressure block 65, provides stable positioning for the item to be tested, ensuring stable contact between the item to be tested and the test platform 2, thereby ensuring the accuracy of the vibration test of this utility model. The testing method for the item to be tested in this utility model adopts the testing method of specific embodiment 1 for vibration testing, which will not be described again here.

[0048] Technical features not explained in this embodiment are explained using the technical features of specific embodiment 1, and will not be repeated here.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, without departing from the design spirit of the present utility model, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present utility model should fall within the protection scope of the patent application of the present utility model.

Claims

1. A six-dimensional vibration testing structure, characterized in that: The test structure includes a vibration support, a test platform mounted on the vibration support, a vibration test component mounted on one side of the test platform, at least one first sensor mounted on the other side of the test platform opposite to the vibration test component, at least one second sensor mounted on the other two sides of the test platform, and a limiting component mounted on the test platform. The limiting component is used to limit the object to be tested to be positioned on the test platform. The vibration test component, the first sensor, and each of the second sensors constitute a multi-dimensional test structure for detecting the real-time vibration of each test point on the test platform.

2. The six-dimensional vibration testing structure according to claim 1, characterized in that: The vibration support includes a base, at least three columns on the base, a vibrating element fixed to one end of each column, and a connecting element on each vibrating element. Each connecting element is fixedly connected to the test bench. The vibrating element is a silicone block or a spring.

3. The six-dimensional vibration testing structure according to claim 1, characterized in that: The vibration testing assembly includes at least one fixed frame connected to the test bench and at least three third sensors mounted on the fixed frame.

4. The six-dimensional vibration testing structure according to claim 3, characterized in that: The mounting bracket includes a fixed section on one side of the test bench and at least one extension section at the upper and lower ends of the fixed section. Each extension section is provided with at least one third sensor. Alternatively, the mounting bracket includes a fixed section on one side of the test bench and at least one extension section at the upper or lower end of the fixed section. At least one third sensor is provided at the connection between the fixed section and the test bench, and at least one third sensor is also provided at each end of the extension section.

5. The six-dimensional vibration testing structure according to claim 3, characterized in that: The mounting bracket includes a fixed section located on the bottom surface of one side of the test bench and at least one extension section located at the lower end of the fixed section. At least one third sensor is provided at the connection between the fixed section and the test bench, and at least one third sensor is also provided at each end of the extension section.

6. The six-dimensional vibration testing structure according to claim 1, characterized in that: The first sensor is connected to the test bench via a first connecting seat. The first sensor protrudes from the upper surface of the test bench, and / or the first sensor is flush with the side of the test bench, and / or the first sensor protrudes from the lower surface of the test bench, and / or the first sensor is located on the bottom surface of the test bench. The first sensor and the vibration test assembly are symmetrically arranged on both sides.

7. The six-dimensional vibration testing structure according to claim 1, characterized in that: Each of the second sensors is connected to the test bench via a second connector. The second sensor protrudes from the upper surface of the test bench, and / or is flush with the side of the test bench, and / or protrudes from the lower surface of the test bench. Each of the second sensors is symmetrically arranged on the other two sides of the test bench.

8. The six-dimensional vibration testing structure according to claim 1, characterized in that: The test bench has a setting slot in the middle for positioning and placing the item to be tested. The bottom surface of the middle part of the setting slot has at least one clearance recess or a first clearance hole for avoiding the working area of ​​the item to be tested.

9. The six-dimensional vibration testing structure according to claim 1, characterized in that: The limiting component includes at least three banana connectors disposed on the upper surface of the test platform, each banana connector cooperating to limit the test item to be tested on the test platform.

10. The six-dimensional vibration testing structure according to claim 1, characterized in that: The limiting assembly includes a pressure plate connected to the test table on one side via a hinge, a spring latch located between the other side of the pressure plate and the test table, and at least two pressure blocks located on the side of the pressure plate facing the test table.

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