A simulation impact test bench and a simulation impact test method

Abstract

The utility model relates to a kind of simulation impact test bench and impact test method, belong to impact test field.Simulation impact test bench includes pedestal, horizontal vibration isolation component, vertical vibration isolation component and limiting component. Among them, fixed plate is provided on base, and multiple horizontal vibration isolators are arranged in pairs on fixed plate;Horizontal vibration isolator includes support rod, support plate and detachable elastic buffer;In the installation state of test equipment, support rod is tightly pressed on the surface of test equipment with elastic buffer on support plate;Limiting component can adjust the elastic deformation of fixed plate, so as to adjust the compression amount of elastic buffer.Vertical vibration isolation component is arranged between the base of pedestal and impact platform.The simulation impact test bench has good reliability in high-load impact test, and the vibration isolator is not prone to instability damage, which can improve test efficiency and optimize test cost.

Description

Technical Field

[0001] This invention belongs to the field of impact testing, specifically relating to a simulated impact test bench and an impact test method. Background Technology

[0002] For large-scale simulated test equipment, accurate simulation of impact loads and frequencies under real-world conditions is required to obtain qualified impact test data with equivalent dynamics. To protect the test equipment and adjust the actual load borne by the tested equipment, vibration isolators are needed to buffer the load and adjust the frequency. However, currently available frequency-adjustable isolators, such as rubber isolators and spring isolators, are large in size and weight. When installed laterally, they are prone to sagging due to gravity, leading to instability and damage during high-load re-entry tests, and even causing damage to the test equipment. Therefore, providing a simulated impact test bench with better vibration isolation performance is of positive significance for improving the reliability and economy of impact testing. Summary of the Invention

[0003] The purpose of this invention is to provide a simulated impact test bench to improve vibration isolation performance. This invention also provides an impact testing method.

[0004] According to one embodiment of the present invention, a simulated impact test bench is provided, comprising a base, a horizontal vibration isolation component, a vertical vibration isolation component, and a limiting component; wherein,

[0005] The base includes a base and an impact table. The impact table is disposed on the base and provides an installation position for the device under test. The base is provided with a fixing plate extending in a vertical direction, and the fixing plate is disposed on both sides of the impact table.

[0006] The horizontal vibration isolation assembly includes multiple pairs of horizontal vibration isolators. Each horizontal vibration isolator includes a support rod, a support plate, and an elastic buffer. One end of the support rod is fixedly connected to the fixed plate, and the other end is fixedly connected to the support plate. Each support plate is connected to multiple support rods. The elastic buffer is detachably disposed on the surface of the support plate. The elastic buffers of each pair of horizontal vibration isolators are arranged opposite to each other to allow the elastic buffer to abut against the surface of the device under test when the device under test is installed in the installation position.

[0007] The limiting component includes a first component, a second component, and a limiting adjustment member. The first component and the second component are respectively fixedly connected to the fixed plate. The first component and the second component are connected through the limiting adjustment member. The limiting adjustment member adjusts the connection gap between the first component and the second component to adjust the elastic deformation of the fixed plate and adjusts the compression of the elastic buffer when the elastic buffer abuts against the test device.

[0008] The vertical vibration isolation assembly includes a buffer pad, which is disposed between the base and the impact platform.

[0009] The test bench provides distributed horizontal buffer support for the test equipment through multiple sets of horizontal vibration isolators, thereby effectively reducing the weight of a single limiting device and preventing it from deforming due to its own weight. At the same time, each support plate is fixed by multiple support rods, which can effectively disperse the impact load and reduce the risk of instability and damage. The detachable elastic buffer can be replaced according to the test frequency, and the limiting components can keep the elastic buffer in a compressed state to prevent secondary collisions.

[0010] Furthermore, in some embodiments, the simulated impact test bench also includes an impact table buffer assembly, which includes a plurality of limiters fixedly connected to the base and providing horizontal limitation for the impact table.

[0011] Furthermore, in some embodiments, a compressible elastic block is provided between the limiter and the impact platform, and the degree of compression of the elastic block is adjustable.

[0012] Furthermore, in some embodiments, the elastic buffer and the buffer pad are made of rubber or polyurethane.

[0013] Furthermore, in some embodiments, at least two pairs of horizontal vibration isolators are provided.

[0014] Furthermore, in some embodiments, the limiting adjustment member is configured as an adjusting bolt.

[0015] Furthermore, in some embodiments, the first component and the second component are respectively configured as U-shaped frames, the bottom of the U-shaped frame is fixedly connected to the fixing plate, and the adjusting bolt is connected to both ends of the U-shaped frame.

[0016] Furthermore, in some embodiments, the impact platform is configured as a rectangular platform, and the buffer pads are disposed at the four corners of the rectangular platform.

[0017] Furthermore, in some embodiments, the length of the support rod is adjustable.

[0018] According to another aspect of the present invention, an impact testing method is provided, employing the simulated impact testing bench provided in any of the foregoing embodiments, and comprising the following steps:

[0019] The device under test is mounted on the impact table, and the elastic buffer with a corresponding frequency is provided according to the test conditions, so that the elastic buffer abuts against the surface of the device under test;

[0020] Adjust the limiting adjustment member to change the compression amount of the elastic buffer member;

[0021] A vertical impact load and / or a horizontal impact load along the axial direction of the support rod are applied to the device under test.

[0022] This method can effectively test equipment with different masses and vibration characteristics, reduce the risk of damage to the equipment, improve test efficiency, and optimize test costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the simulated impact test bench structure in one embodiment;

[0024] Figure 2 This is a schematic diagram of the installation structure of the device under test in one embodiment;

[0025] Figure 3 for Figure 2 Enlarged view of a portion of region A in the middle.

[0026] Meaning of reference numerals in the attached drawings: 1-Base; 11-Staple; 12-Buffer pad; 13-Limiter; 14-Elastic block; 15-Fixed angle bracket; 16-Fixed plate; 17-Impact table; 2-Horizontal vibration isolation assembly; 21-Support rod; 22-Support plate; 23-Elastic buffer; 3-Limiting assembly; 31-First assembly; 32-Second assembly; 33-Limiting adjustment component; 4-Test device.

[0027] The purpose of the above-described drawings is to provide a detailed description of the invention in conjunction with the accompanying drawings, so that those skilled in the art can understand the technical concept of the invention, and is not intended to limit the invention. For the sake of brevity, the above-described drawings only schematically depict the structures related to the technical features of the invention, and do not strictly follow the actual scale to show the complete structure and all details. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0029] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment herein. The phrase appearing in various places in the specification does not necessarily refer to the same embodiment, nor is it limited to mutually exclusive, independent, or alternative embodiments. Those skilled in the art will understand that the embodiments herein can be combined with other embodiments without causing structural conflicts.

[0030] In this description, unless otherwise explicitly specified and limited, the technical terms "installation," "connection," "joining," etc., should be interpreted broadly, for example, referring to movable connections, fixed connections, or integration. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0031] In this description, terms such as "upper," "lower," "left," "right," "lateral," "longitudinal," "height," "length," and "width," which indicate orientation or positional relationships, are intended to accurately describe the embodiments and simplify the description, rather than limiting the parts or structures involved to have a specific orientation, or to be installed or operated in a specific orientation, and should not be construed as limiting the embodiments in this document.

[0032] In this description, terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating relative importance or limiting the number, specific order, or primary / secondary relationship of the described technical features. In this description, "multiple" means at least two.

[0033] Impact test benches require vibration isolators to tune the impact load, thereby simulating the real impact environment and ensuring the dynamic equivalence of the test. Currently, conventional vibration isolators, such as helical spring isolators, rubber isolators, and wire rope isolators, generally have some defects and shortcomings, such as: limited impact load capacity and easy failure under high-strength tests; limited load-bearing capacity, resulting in complex structures and large space occupation when the impact load is high; difficulty in stepless adjustment; easy tilting when horizontally arranged, leading to overall instability and damage during the test; and easy mutual interference under complex multi-directional vibration loading.

[0034] To overcome the above-mentioned shortcomings, one embodiment of the present invention provides a simulated impact test bench that is easy to tune, simple and reliable, has better vibration isolation performance in impact load tests, is suitable for impact load testing of equipment of different masses and sizes, and can effectively protect the tested equipment from damage during the test.

[0035] In a preferred embodiment, the simulated impact test bench structure is as follows: Figure 1 As shown, when the tested device 4 is used as follows Figure 2When installed on the simulated impact test bench as shown, it can conduct simulated impact tests at various frequencies and under different types of loads, simulating the actual impact load under real working conditions.

[0036] The simulated impact test bench includes a base 1, a horizontal vibration isolation assembly 2, a vertical vibration isolation assembly, and a limiting assembly 3. The base 1 includes a base 11 and an impact table 17, which provides the mounting position for the device under test 4. A pair of fixing plates 16 extending vertically are respectively provided on both sides of the impact table 17.

[0037] The horizontal vibration isolation assembly 2 is fixedly mounted on the fixed plate. Specifically, the horizontal vibration isolation assembly 2 includes two pairs of horizontally opposed horizontal vibration isolators, which are arranged vertically. Each horizontal vibration isolator includes a support rod 21, a support plate 22, and an elastic buffer 23. One end of the support rod 21 is fixedly connected to the fixed plate 16, and the other end is connected to the support plate 22. Each support plate 22 is fixedly connected to two support rods 21. The elastic buffer 23 is disposed on the surface of the support plate 22 and is detachable, so it can be replaced according to the test requirements. In the installed state, the elastic buffers 23 on the pair of opposed horizontal vibration isolators are arranged opposite each other. When the test device 4 is mounted on the impact table 17, the elastic buffer 23 abuts against the surface of the test device 4.

[0038] It is readily understood that in other embodiments, the horizontal vibration isolation assembly 2 may include three or more pairs of horizontal vibration isolators to accommodate higher impact load test requirements. Since the horizontal vibration isolators can be distributed, the volume and weight of a single isolator can be controlled even under high load test conditions, preventing sagging deformation caused by its own weight from inducing instability and damage during the test. Three or more support rods 21 may also be connected to each support plate 22 to improve the horizontal vibration isolator's ability to withstand high impact loads. It should be noted that to improve stability, the distance from the geometric center of the support plate 22 to each support rod 21 should be as equal as possible to further reduce the risk of instability during the test. In a preferred embodiment, the length of the support rod 21 is adjustable to accommodate test equipment 4 of different sizes. In a preferred embodiment, the elastic buffer 23 is made of rubber or polyurethane.

[0039] The limiting component 3 includes a first component 31, a second component 32, and a limiting adjustment member 33. The first component 31 and the second component 32 are respectively fixedly connected to two fixed plates 16, and are connected to each other via the limiting adjustment member 33. The first component 31 and the second component 32 each adopt a U-shaped frame structure. The bottom of the U-shaped frame is fixedly connected to the outside of the fixed plate 16 (i.e., the side of the two fixed plates 16 facing away from each other), and the two ends of the U-shaped frame are respectively connected to the limiting adjustment member 33. In a preferred embodiment, the limiting adjustment member 33 can be set as an adjusting bolt connected to the ends of the first component 31 and the second component 32. It is easy to understand that within a certain load, the geometry of the first component 31 and the second component 32 does not affect their function; for example, the frame structure formed by the first component 31 and the second component 32 can be rectangular, circular, or other shapes.

[0040] The limiting adjustment component 33 can adjust the connection gap between the first component 31 and the second component 32 to adjust the elastic deformation of the fixed plate 16. When the connection gap between the first component 31 and the second component 32 decreases, the two fixed plates 16 are subjected to the tensile forces of the first component 31 and the second component 32 respectively, resulting in elastic deformation, which in turn causes the pairs of horizontal vibration isolators installed on the fixed plates 16 to move closer to each other. In the installed state of the test equipment 4, by adjusting the connection gap between the first component 31 and the second component 32, the degree of compression of the elastic buffer component 23 on the surface of the test equipment 4 can be adjusted, thereby providing different constraint forces for the test equipment 4. During the impact load test, the elastic buffer component 23 is always in a compressed state, which can prevent the support plate 22 from detaching from the surface of the test equipment 4 during the test and causing secondary impact damage.

[0041] In a preferred embodiment, the impact platform 17 is a rectangular platform, and a vertical vibration isolation assembly is provided between the impact platform 17 and the base 11. The vertical vibration isolation assembly is configured as a plurality of buffer pads 12. In a preferred embodiment, four buffer pads 12 are provided on the surface of the base 11 at the four corners of the rectangular platform to provide vertical cushioning for the impact platform 17. The buffer pads 12 can also be made of rubber or polyurethane.

[0042] In a further preferred embodiment, such as Figure 3 As shown, the base 11 is also equipped with limiters 13. Two pairs of limiters 13 are arranged opposite each other on both sides of the fixing plate 16. The limiters 13 provide horizontal limitation for the impact table 17. A fixing bracket 15 is provided on the upper surface of the impact table 17, and the fixing bracket 15 is arranged opposite to each limiter 13. An elastic block 14 is provided between the limiter 13 and the fixing bracket 15 of the impact table 17. The elastic block 14 is in a compressed state, and its degree of compression can be adjusted. The elastic block 14 can also be made of rubber or polyurethane.

[0043] Utilize Figures 1 to 3 The simulated impact test bench shown can effectively carry out impact load tests on test equipment 4 of different masses and sizes, effectively preventing the vibration isolator from becoming unstable and damaged or causing damage to the test equipment 4 during the test.

[0044] Another embodiment of the present invention provides a method for conducting impact tests using the above-described simulated impact test bench:

[0045] First, an impact platform 17 is mounted on the base 11, and the compression degree of the elastic block 14 is adjusted according to the load applied in the test.

[0046] Next, the device under test is mounted on the impact table 17. Based on the impact test load and frequency, an elastic buffer 23 with a matching frequency is selected and installed on the support plate of the horizontal vibration isolator; adhesive bonding can be used for installation. By designing the mass, dimensions, and geometry of the elastic buffer 23, its frequency can be effectively adjusted. The horizontal vibration isolator is installed on the fixed plate 16, and the length of the support rod 21 protruding from the fixed plate 16 is adjusted to press the elastic buffer 23 firmly onto the surface of the device under test 4. The adjusting bolts, which act as limit adjustment components 33, are adjusted to change the force and deformation of the fixed plate 16, thereby adjusting the degree of compression of the elastic buffer 23. The applied pressure should be adapted to the impact load to prevent secondary impacts.

[0047] Finally, an impact load is applied to the test device 4 to conduct the test. Specifically, in different embodiments, the impact load can be unidirectional, such as a vertical impact load or a horizontal impact load along the axis of the support rod 21; it can also be multidirectional or a composite load, such as a composite load in the vertical and horizontal directions, or a rotational impact load, etc.

[0048] The purpose of the above embodiments is to provide a further detailed description of the present invention in conjunction with the accompanying drawings, so that those skilled in the art can understand the technical concept of the present invention. Within the scope of the present invention, optimization or equivalent substitution of the technical features involved, as well as combination of implementation methods in different embodiments without causing structural and principle conflicts, all fall within the protection scope of the present invention.

Claims

1. A simulated impact test bench, characterized in that, include: Base, horizontal vibration isolation components, vertical vibration isolation components, and limiting components; among which, The base includes a base and an impact table. The impact table is disposed on the base and provides an installation position for the device under test. The base is provided with a fixing plate extending in a vertical direction, and the fixing plate is disposed on both sides of the impact table. The horizontal vibration isolation assembly includes multiple pairs of horizontal vibration isolators. Each horizontal vibration isolator includes a support rod, a support plate, and an elastic buffer. One end of the support rod is fixedly connected to the fixed plate, and the other end is fixedly connected to the support plate. Each support plate is connected to multiple support rods. The elastic buffer is detachably disposed on the surface of the support plate. The elastic buffers of each pair of horizontal vibration isolators are arranged opposite to each other to allow the elastic buffer to abut against the surface of the device under test when the device under test is installed in the installation position. The limiting assembly includes a first component, a second component, and a limiting adjustment member. The first component and the second component are respectively fixedly connected to the fixed plate. The first component and the second component are connected through the limiting adjustment member. The limiting adjustment member adjusts the connection gap between the first component and the second component to adjust the elastic deformation of the fixed plate and adjusts the compression of the elastic buffer when the elastic buffer abuts against the test device. The limiting adjustment member is configured as an adjusting bolt. The first component and the second component are respectively configured as U-shaped frames. The bottom of the U-shaped frame is fixedly connected to the fixed plate, and the adjusting bolt is connected to both ends of the U-shaped frame. The vertical vibration isolation assembly includes a buffer pad, which is disposed between the base and the impact platform.

2. The simulated impact test bench according to claim 1, characterized in that, It also includes an impact table buffer assembly, which includes multiple limiters that are fixedly connected to the base and provide horizontal limitation for the impact table.

3. The simulated impact test bench according to claim 2, characterized in that, A compressible elastic block is provided between the limiter and the impact platform, and the degree of compression of the elastic block is adjustable.

4. The simulated impact test bench according to claim 1, 2, or 3, characterized in that, The elastic buffer and the buffer pad are made of rubber or polyurethane.

5. The simulated impact test bench according to claim 1, 2, or 3, characterized in that, The horizontal vibration isolators are provided in at least two pairs.

6. The simulated impact test bench according to claim 1, 2, or 3, characterized in that, The impact platform is a rectangular platform, and the buffer pads are located at the four corners of the rectangular platform.

7. The simulated impact test bench according to claim 1, 2, or 3, characterized in that, The length of the support rod is adjustable.

8. An impact testing method, characterized in that, The simulated impact test bench as described in any one of claims 1 to 7 is used, and the following steps are included: The device under test is mounted on the impact table, and the elastic buffer with a corresponding frequency is provided according to the test conditions, so that the elastic buffer abuts against the surface of the device under test; Adjust the limiting adjustment member to change the compression amount of the elastic buffer member; An impact load is applied to the device under test.

9. The impact testing method according to claim 8, characterized in that, The impact load includes a vertical impact load and / or a horizontal impact load along the axial direction of the support rod.

Images