Vibration testing device

Abstract

This disclosure relates to a vibration testing device, comprising multiple vibration components. Each vibration component includes a vibration source and a mounting base connected to the vibration source, with each mounting base connected to a different position on the test piece. This disclosure enables the application of independent vibration excitations at different positions on the test piece, thereby replicating the complex vibration conditions caused by multiple vibration sources superimposed in a real vehicle.

Description

Technical Field

[0001] This disclosure relates to the field of testing technology for new energy vehicle components, and specifically to a vibration testing device. Background Technology

[0002] High-voltage wiring harnesses and conduits are crucial components of new energy vehicles. During vehicle operation, the combined vibration environment of vehicle body swaying, engine vibration, and road impacts can easily lead to problems such as insulation damage, core wire breakage, terminal contact failure, or conduit leakage. Therefore, vibration testing is necessary to accurately evaluate the performance of vehicle wiring harnesses / conduits. Since testing actual vehicle wiring harnesses / conduits is complex and costly, making it unsuitable for preliminary testing during the early design phase, simulated vibration environments are typically used to replace real-vehicle vibration testing.

[0003] In the existing technology, most vibration testing devices for vehicle wiring harnesses / pipes provide single-end vibration excitation, which makes it difficult to accurately simulate the complex vibration conditions of wiring harnesses / pipes during vehicle operation. Utility Model Content

[0004] The purpose of this disclosure is to provide a vibration testing device that can reproduce the complex vibration conditions of multiple vibration sources superimposed in a real vehicle, so as to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, a first aspect of this disclosure provides a vibration testing apparatus, comprising multiple vibration components. Each vibration component includes a vibration source and a mounting base connected to the vibration source, with each mounting base connected to a different position on the test piece. This disclosure achieves differentiated excitation of independent vibration sources by applying independent vibration excitation to different positions on the test piece using multiple vibration components, thereby simulating the coupling effect of each independent vibration source on the test piece and replicating the complex vibration conditions of multiple vibration sources superimposed in a real vehicle.

[0006] In some possible implementations, the device under test includes a wire harness and / or a conduit under test, enabling a single device to meet the dual testing requirements of wire harnesses and conduits, thereby reducing R&D costs.

[0007] In some possible implementations, the plurality of vibration components include a first vibration component and a second vibration component. The first vibration component is used to connect to a first end of the test piece, and the second vibration component is used to connect to a second end of the test piece opposite to the first end. The vibration source is independently set with vibration parameters at both ends to simulate the relative motion state of the two ends of the wiring harness / pipeline during vehicle operation.

[0008] In some possible implementations, the mounting base includes at least two mounting surfaces facing different directions, so that the test piece can be selectively connected to any at least one of the mounting surfaces, enabling rapid switching in multiple directions, such as rapid switching in three directions, overcoming the cumbersome operation problem caused by the limitation of the mounting direction of traditional devices.

[0009] In some possible implementations, the at least two mounting surfaces include a first mounting surface, a second mounting surface, and a third mounting surface, wherein the first mounting surface, the second mounting surface, and the third mounting surface are perpendicular to each other. Connecting the test piece to different mounting surfaces allows for vibration testing in three directions within three-dimensional space.

[0010] In some possible implementations, the vibration source is configured to provide vibration along a first direction, with the first mounting surface perpendicular to the first direction. The relationships between the first mounting surface, the second mounting surface, and the third mounting surface and the first direction can be established with the first direction as a reference to facilitate precise application of vibration excitation.

[0011] In some possible implementations, the mounting base includes a top surface, a bottom surface, and multiple side surfaces connecting the top and bottom surfaces. The bottom surface is used to connect the vibration source. The top surface includes the first mounting surface, and the multiple side surfaces include the second and third mounting surfaces. By switching the mounting surfaces, excitation in the same vibration direction is converted into loads on the test piece in different directions, enabling a single device to perform triaxial vibration coupling testing.

[0012] In some possible implementations, each of the mounting surfaces is provided with at least one mounting portion, so that the test piece can be selectively connected to any at least one of the mounting portions, supporting multi-point combination locking and solving the problem of fixing stability of heavy pipelines or irregular wire harnesses.

[0013] In some possible implementations, the vibration assembly further includes a locking device for connecting the test piece (DPT) and the mounting portion. The locking device connects the DPT to the mounting portion, allowing the vibration excitation energy from the vibration source to be transmitted to the DPT. The locking device material can be compatible with the DPT, eliminating the risk of galvanic corrosion while ensuring the locking condition is consistent with the actual vehicle assembly process.

[0014] In some possible implementations, the mounting portion includes mounting holes that mate with the locking fasteners. The mating of the mounting holes and locking fasteners provides support at both ends of the test piece, allowing the vibration excitation from the vibration source to be transmitted to the test piece. The mounting holes can provide a standardized mechanical interface, compatible with industry-standard fasteners to reduce user customization costs.

[0015] In some possible implementations, the vibration testing device includes a mounting base, at least one of the vibration components being positionally adjustable to the mounting base to adjust its relative position to other vibration components, thereby simulating the height difference and displacement difference of test pieces of different lengths.

[0016] In some possible implementations, the mounting base includes a guide rail to which at least one of the vibration sources is movably connected. The vibration sources can slide along the guide rail, adjusting the relative distance between the plurality of vibration sources.

[0017] In some possible implementations, at least one of the vibration sources has its bottom end lockable to the guide rail via a locking assembly. When the vibration source slides to the appropriate position, the locking assembly locks it in place, ensuring the vibration source is fixed to the guide rail and thus stably outputting vibration excitation. This allows for one-button locking / unlocking, eliminating the risk of accidental displacement during testing and improving adjustment efficiency.

[0018] In some possible implementations, the locking assembly includes a rail clamp connected to the vibration source and the rail respectively, providing rigid constraint through mechanical engagement to overcome thread wear caused by repeated disassembly and assembly.

[0019] In some possible implementations, the vibration testing apparatus includes an environmental chamber, the environmental chamber comprising: A housing having an ambient chamber, wherein in the vibration assembly, at least a portion of the mounting base is located within the ambient chamber such that the test piece is located within the ambient chamber; and An adjustment component, disposed on the enclosure, is used to adjust the temperature and / or humidity within the environmental chamber.

[0020] The enclosure and conditioning components provide configurable temperature and humidity conditions for the test object (DUT). The enclosure surrounds the DUT to form an environmental chamber, and the conditioning components control the temperature and humidity of the chamber, simultaneously reproducing the coupled vibration and temperature / humidity conditions.

[0021] In some possible implementations, the enclosure has an opening communicating with the environmental chamber. The environmental chamber further includes a windbreak connected to the enclosure and covering the opening, the windbreak having a clearance opening for the vibration component to pass through. The opening in the enclosure allows the vibration component to extend into the environmental chamber, the windbreak ensures the airtightness of the environmental chamber, the clearance opening on the windbreak allows the vibration component to pass through and extend into the environmental chamber, and simultaneously the windbreak isolates external humid air, ensuring the temperature and humidity conditions within the environmental chamber.

[0022] In some possible implementations, the windbreak is made of a flexible material. Flexible materials maintain environmental stability while allowing vibrations to propagate freely, avoiding resonance interference from rigid covers.

[0023] In some possible implementations, the vibration source includes an electromagnetic vibration table, which provides unidirectional vibration. The frequency, amplitude, and phase parameters of multiple electromagnetic vibration tables are independently adjustable, enabling coordinated vibration testing of multiple vibration sources.

[0024] The vibration testing device disclosed herein, through the aforementioned technical solution, enables the independent application of controllable vibration excitation to each connection point between the test component and each mounting base by setting a vibration source and mounting base in each vibration component and connecting multiple such vibration components to different positions on the test component. This allows each vibration component to apply differentiated excitation to the test component, simulating the coupling effect of independent vibration sources on the test component and replicating the complex vibration conditions of multiple vibration sources superimposed in a real vehicle. This effectively solves the problem in the prior art where single-end vibration excitation is difficult to accurately simulate complex vibration conditions such as wiring harnesses / pipes during vehicle operation (e.g., combined effects of vehicle body swaying, engine vibration, and road impact). This device can efficiently and cost-effectively replace real-vehicle testing in a laboratory environment, enabling early assessment of potential risks such as insulation damage, core wire breakage, terminal contact failure, or pipe leakage in wiring harnesses / pipes, providing crucial data support for the design and selection of new energy vehicle components.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory, and do not limit this disclosure. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0027] Figure 1 This is a structural diagram of a vibration testing apparatus according to an exemplary embodiment; Figure 2 This is a structural diagram of a vibration assembly according to an exemplary embodiment; Figure 3 This is a structural diagram of a housing according to an exemplary embodiment; Figure 4 This is a structural diagram of a mounting base shown as an example; Figure 5 It is a structural diagram of the test piece shown in an exemplary embodiment.

[0028] Explanation of reference numerals in the attached figures 1-Vibration assembly; 2-Mounting base; 3-Environmental chamber; 4-Test piece; 11-Locking fastener; 12-Mounting base; 121-Mounting part; 1211-Mounting hole; 122-First mounting surface; 123-Second mounting surface; 124-Third mounting surface; 125-Bottom surface; 13-Vibration source; 131-Electromagnetic vibration table; 21-Guide rail; 22-Locking assembly; 221-Guide rail clamp; 31-Box; 311-Environmental chamber; 312-Opening; 313-Avoidance opening; 32-Adjustment assembly; 33-Wind deflector. Detailed Implementation

[0029] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0030] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" generally refer to upper, lower, left, and right relative to the figures; "inner" and "outer" refer to the inner and outer contours of the corresponding components; and "far" and "near" refer to the corresponding structure or component being away from or near another structure or component. In the figures of this disclosure, Z1 indicates a first direction; Y1 indicates a second direction; and X1 indicates a third direction. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance implications. In addition, in the following description, when referring to the figures, unless otherwise explained, the same reference numerals in different figures denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0031] The purpose of this disclosure is to provide a vibration testing device that aims to at least solve the technical problems of high cost in real-vehicle vibration testing of wiring harnesses / pipes in new energy vehicles and the inability of single-end excitation to accurately simulate multi-vibration coupling. By designing a multi-source independent excitation structure and a multi-dimensional environmental coupling system, it is possible to achieve accurate reproduction and efficient evaluation of high-voltage wiring harnesses / pipes under real-vehicle vibration conditions.

[0032] According to a first aspect of the embodiments of this disclosure, reference is made to Figures 1 to 5 As shown, this disclosure provides a vibration testing device. The vibration testing device includes multiple vibration components 1, each vibration component 1 including a vibration source 13 and a mounting base 12 connected to the vibration source 13, and each mounting base 12 is respectively connected to different positions of the test piece 4.

[0033] Through the above technical solution, namely the vibration testing device disclosed herein, by setting a vibration source 13 and a mounting base 12 in each vibration component, and by using multiple such vibration components to be connected to different positions on the test piece 4, controllable vibration excitation can be applied independently to each connection point between the test piece 4 and each mounting base. That is, each vibration component can apply differential excitation to the test piece 4, which can simulate the coupling effect of each independent vibration source on the test piece and reproduce the complex vibration condition of multiple vibration sources superimposed in a real vehicle.

[0034] In one exemplary application scenario, this vibration testing device can be used to simulate the vibration environment experienced by wiring harnesses / pipes during the operation of new energy vehicles. This effectively solves the problem in the prior art where single-end vibration excitation is difficult to accurately simulate the complex vibration conditions of wiring harnesses / pipes during vehicle operation (such as the combined effects of vehicle body swaying, engine vibration, and road impact). This device can efficiently and cost-effectively replace real-vehicle testing in a laboratory environment, enabling early assessment of potential risks such as insulation damage, core wire breakage, terminal contact failure, or pipe leakage in wiring harnesses / pipes, providing crucial data support for the design and selection of new energy vehicle components.

[0035] In one embodiment, the plurality of vibration components 1 include a first vibration component and a second vibration component. The mounting base 12 of the first vibration component is connected to the first end of the test piece 4 via a locking fastener 11, and the mounting base 12 of the second vibration component is connected to the second end of the test piece 4 opposite to the first end via a locking fastener 11. The vibration sources 13 of the two vibration components 1 can be independently set with different vibration parameters (such as frequency, amplitude, and phase) to simulate the relative motion state of the two ends of the test piece 4 in a real driving environment.

[0036] It should be noted that the number of vibration components 1 can be arranged according to the length, shape, and actual needs of the simulated vibration complexity of the test piece 4. For example, for longer wiring harnesses or pipes with intermediate fixed points, a third, fourth, or even more vibration components 1 can be set between the first and second ends, respectively connected to different positions between the first and second ends of the test piece 4, to provide multi-point, multi-directional excitation that more closely resembles the actual vehicle condition. In addition, the specific type (e.g., electromagnetic, hydraulic), power parameters, and specific structural form of the mounting base 12 of each vibration component 1 can be selected and adjusted according to the size, weight, and required test standards of the test piece 4.

[0037] In some embodiments, the test component 4 may include the wiring harness and / or the pipeline to be tested. Specifically, the wiring harness may refer to a high-voltage cable assembly for new energy vehicles (such as a battery connection wire), and the pipeline to be tested may refer to a fluid transport pipeline for the vehicle (such as a coolant pipe). During operation, the wiring harness, the pipeline, or a combination of both can be connected separately according to the testing requirements. Through the above technical solution, the vibration testing device disclosed herein supports multiple types of test components and can efficiently simulate the combined vibrations (such as vehicle body shaking and engine vibration) experienced by wiring harnesses and pipelines in a real vehicle environment. This solution solves the problem of insufficient versatility of testing devices in the background art and can be directly used to assess the risk of insulation damage to high-voltage wiring harnesses or the potential leakage of pipelines, significantly reducing R&D costs.

[0038] In some embodiments, the plurality of vibration components 1 include a first vibration component and a second vibration component. The first vibration component is used to connect to a first end of the test piece 4, and the second vibration component is used to connect to a second end of the test piece opposite to the first end. Specifically, the two vibration components 1 are arranged independently and fixed to both ends of the test piece 4 by mounting bases 12 (e.g., the input terminal of the wiring harness is connected to the first component, and the output terminal is connected to the second component). The vibration source 13 can be set with different parameters (e.g., frequency, amplitude, phase). Through the above technical solution, that is, the device of this disclosure, by independently exciting both ends, accurately simulates the relative motion of the two ends of the wiring harness / pipeline when the vehicle is in motion (e.g., high-frequency vibration at the front end simulates engine vibration, and low-frequency vibration at the rear end simulates road impact). This solution can overcome the defect of single-end vibration in the prior art, which is difficult to reflect the real working conditions, improve the test accuracy, and is suitable for evaluating terminal contact failure or seal fatigue performance.

[0039] In some embodiments, reference Figure 2 and Figure 4 As shown, the mounting base 12 of the vibration assembly 1 may include at least two mounting surfaces facing different directions, allowing the test piece 4 to be selectively connected to any at least one mounting surface. Specifically, there are at least two mounting surfaces (e.g., a top surface and a side surface), each with a mounting portion (e.g., a mounting hole or groove), and the test piece 4 is fixed to one or more surfaces by fasteners 11. The mounting base 12 of this disclosure allows for flexible connection directions (e.g., horizontal, vertical, or inclined installation) to accommodate different geometric layouts of the test piece 4 (e.g., a wire harness drooping to the top surface, a pipe horizontal to the side surface). This solution simplifies the test preparation process, improves the adaptability of the device, and solves the operational complexity caused by installation limitations in the prior art.

[0040] In some embodiments, at least two mounting surfaces may include a first mounting surface 122, a second mounting surface 123, and a third mounting surface 124, which are perpendicular to each other. Exemplarily, the three mounting surfaces are orthogonally arranged (e.g., the top surface as the first mounting surface 122, the left side surface as the second mounting surface 123, and the front side surface as the third mounting surface 124), with each surface configured with a mounting portion 121 (e.g., a mounting hole 1211), ensuring that the test piece 4 can be connected in any direction in three-dimensional space. Through the above technical solution, i.e., the orthogonal structure of this disclosure, multi-directional composite vibrations (such as longitudinal, lateral, and vertical loads) during vehicle operation are accurately simulated, improving the realism of the test. This solution optimizes vibration energy transfer efficiency, directly supports the reproduction of complex vibration conditions described in the background art, and helps identify failure modes of wiring harnesses / pipes in real-world environments.

[0041] In some embodiments, the vibration source 13 is configured to provide vibration along a first direction, and the first mounting surface 122 of the mounting base 12 is perpendicular to the first direction. The relationships between the first mounting surface 122, the second mounting surface 123, and the third mounting surface 124 and the first direction can be constructed with the first direction as a reference to facilitate precise application of vibration excitation. Exemplarily, the vibration source 13 can be an electromagnetic vibration table, which outputs along the first direction (i.e., the Z1 axis), while the top surface of the mounting base 12, serving as the first mounting surface 122, is designed to be perpendicular to the first direction. Through the above technical solution, i.e., this disclosure, by constraining the vibration direction to be perpendicular to the first mounting surface 122, ensures that the excitation direction transmitted to the test piece 4 is precisely controllable, avoiding vibration energy loss or directional deviation caused by the tilt of the mounting surface.

[0042] In some embodiments, such as Figure 4 As shown, the mounting base 12 may include a top surface, a bottom surface 125, and multiple side surfaces connected between the top surface and the bottom surface 125. The bottom surface 125 is used to connect the vibration source 13. The top surface includes a first mounting surface 122, and the multiple side surfaces include a second mounting surface 123 and a third mounting surface 124. Exemplarily, the mounting base 12 has a hexahedral structure, and the bottom surface 125 is fixed to the output end of the vibration source 13 by bolt connection. Through the above technical solution, namely the polyhedral design of this disclosure, space utilization is maximized, allowing the test piece 4 to flexibly select the connection direction and supporting multi-dimensional vibration coupling testing.

[0043] For example, refer to Figure 4 and Figure 5As shown, the test piece 4 is a wire harness. In the first installation method, both ends of the wire harness are mounted on the first mounting surfaces 122 of two oppositely arranged mounting bases 12. The vibration source 13 provides vibration excitation in the Z1 direction, and both ends of the test piece 4 are subjected to vibration excitation in the X2 direction. In the second installation method, both ends of the wire harness are mounted on the second mounting surfaces 123 of two oppositely arranged mounting bases 12. The vibration source 13 provides vibration excitation in the Z1 direction, and both ends of the test piece 4 are subjected to vibration excitation in the Z2 direction. In the third installation method, both ends of the wire harness are mounted on the second mounting surfaces 123 of two oppositely arranged mounting bases 12. The locking fastener 11 is rotated 90° around X2 relative to the second installation method, that is, the test piece 4 is rotated 90° around X2. The vibration source 13 provides vibration excitation in the Z1 direction, and the test piece 4 is subjected to vibration excitation in the Y2 direction. In the fourth installation method, when the test piece 4 is mounted on the third mounting surface 124, the same second installation method as when mounted on the second mounting surface 123 is used, achieving the same or similar vibration effect. In the fifth installation method, when all test pieces 4 are installed on the third mounting surface 124, the same third installation method as that used on the second mounting surface 123 can achieve the same or similar vibration effect.

[0044] For example, in the second or third installation method described above, in one specific embodiment, the test piece 4 is a wire harness, with both ends of the wire harness mounted on the second mounting surfaces 123 of two opposing mounting bases 12. The two ends of the wire harness can be connected to mounting holes with a height difference along the Z1 direction. The vibration source 13 provides vibration excitation in the Z1 direction, and the test piece 4 is subjected to vibration excitation under the height difference condition. In another specific embodiment, the two ends of the wire harness can be connected to mounting holes at the same height along the Z1 direction, and the vibration source 13 provides vibration excitation in the Z1 direction, and the two ends of the test piece 4 are subjected to vibration excitation under the same height condition.

[0045] The above installation method is merely an example. The test piece 4 can be connected to the mounting bases 12 at both ends in many different ways. The required installation method can be selected according to specific needs. Several other installation methods, but not limited to these, are shown below as examples.

[0046] For example, in the sixth installation method, the test piece 4 is a wire harness. One end of the wire harness is installed on the second mounting surface 123 of the mounting base 12, and the other end is installed on the third mounting surface 124 of the mounting base 12. The vibration source 13 provides vibration excitation in the Z1 direction. At this time, the test piece 4 is subjected to vibration excitation under the angle difference condition.

[0047] For example, in the seventh installation method, the test piece 4 is a wire harness. One end of the wire harness is installed on the first mounting surface 122 of the mounting base 12, and the other end is installed on the third mounting surface 124 of the mounting base 12. The vibration source 13 provides vibration excitation in the Z1 direction. The end installed on the first mounting surface 122 is subjected to tensile and compressive stress in the X2 direction, and the end installed on the third mounting surface 124 is subjected to shear stress in the Z2 direction. At this time, the test piece 4 is subjected to vibration excitation under stress coupling conditions. Of course, according to the requirements, one end of the test piece 4 can be connected to any mounting surface of the corresponding mounting base 12, and the other end of the test piece 4 can be connected to any mounting surface of the corresponding mounting base. When the two ends of the test piece 4 are connected to different mounting surfaces, vibration excitation under stress coupling conditions can be achieved.

[0048] In this context, the X2 direction can be the axial or length extension direction of the test component 4, such as a wire harness. The Z2 and Y2 directions are perpendicular to each other and both perpendicular to the X2 direction. Furthermore, the X2, Z2, and Y2 directions can represent the direction of vibration excitation experienced by the wire harness.

[0049] In some embodiments, the mounting surface is provided with at least one mounting portion 121, allowing the test piece 4 to be selectively connected to any at least one mounting portion 121. Exemplarily, the mounting portions 121 are standardized interfaces (such as threaded holes, T-slots, or snap-fits) evenly distributed on each mounting surface of the mounting base 12. Through the above technical solution, i.e., this disclosure provides multi-point connection options through distributed mounting portions 121, significantly improving the adaptability of the device: it supports both single-point fastening of heavy test pieces and multi-point dispersed fixing of irregularly shaped parts (such as branched wire harness assemblies). This solution simplifies the test preparation process; for example, in one embodiment, each end of the wire harness under test is secured to different mounting portions 121 on the top surface with two bolts, dispersing vibration stress concentration. It should be noted that the number and layout of the mounting portions 121 can be customized (e.g., a vibration-lightweight wire harness retains only two mounting holes) to balance structural strength and cost.

[0050] In some embodiments, reference Figure 1 and Figure 2 The vibration assembly 1 shown includes a locking fastener 11, which connects the test piece 4 (DPT) to the mounting portion 121. The locking fastener 11 provides support to both ends of the DPT. The connection of the locking fasteners 11 at both ends of the DPT is consistent with the overall vehicle assembly process to eliminate deviations in the locking state. Specifically, the material of the locking fastener 11 is compatible with the DPT (e.g., copper bolts to prevent galvanic corrosion of aluminum wiring harness terminals). Through this solution, i.e., this disclosure achieves rapid assembly and disassembly using standardized locking fasteners 11, ensuring a rigid connection between the DPT 4 and the mounting portion 121, and eliminating vibration transmission failures caused by loosening during testing.

[0051] In some embodiments, the mounting portion 121 includes a mounting hole 1211, which mates with the fastener 11. Specifically, the mounting hole 1211 is a through hole or a threaded hole, the hole diameter matches the diameter of the fastener 11, and the hole positions are arranged in a matrix on the mounting surface. Through the above technical solution, the mounting hole 1211 structure of this disclosure provides a highly compatible mechanical interface, compatible with industry standard fasteners, and reduces user customization costs. It should be noted that the mounting hole 1211 can be changed to a slotted hole to adjust its position, or a bushing can be added to adapt to different specifications of fasteners 11.

[0052] The specific structure of the fastener 11 can be selected according to the adaptability of the connected test piece. For example, a variety of fasteners 11 with different structures can be provided to suit different test pieces. For example, when the test piece is a pipeline under test, one end of the fastener 11 can be constructed as a threaded pipe with external threads to connect to the pipeline under test, and the other end of the fastener 11 can be constructed as a flange to connect to the mounting part 121 by fasteners.

[0053] In some embodiments, reference Figure 1 and Figure 2 As shown, the vibration testing device includes a mounting base 2, with at least one vibration component 1 adjustablely connected to the mounting base 2 to adjust its relative position to other vibration components 1. Exemplarily, a guide rail 21 is provided on the surface of the mounting base 2; the vibration source 13 is slidably connected to the guide rail 21. During operation, releasing the locking component 22 allows the vibration component 1 to be moved, adjusting its spacing. Through the above technical solution, the mounting base 2 of this disclosure provides an adjustable layout to accommodate test pieces 4 of different lengths, solving the problem in the prior art where fixed devices are difficult to accommodate multi-sized components. Optionally, the guide rail 21 can be replaced with a structure where a threaded rod and a knob cooperate to achieve stepless adjustment.

[0054] In some embodiments, the mounting base 2 includes a guide rail 21, to which at least one vibration source 13 is movably connected. Specifically, the guide rail 21 may be a linear ball bearing guide, with two parallel lines arranged to enhance stability; the base of the vibration source 13 integrates a slider, which slides in cooperation with the guide rail 21. Through the above technical solution, i.e., the structure of the guide rail 21 disclosed herein, the vibration assembly 1 moves smoothly and is positioned accurately, avoiding distortion of the test piece 4 due to the offset of the vibration source 13 during adjustment. This solution solves the problem of low efficiency in traditional bolt hole position adjustment.

[0055] In some embodiments, the bottom end of at least one vibration source 13 is unclamped onto the guide rail 21 via a locking assembly 22. This vibration testing device is used to test test pieces 4 of different lengths. Both ends of the test piece 4 are connected to the mounting base 12, which is fixedly connected to the vibration source 13. The vibration source 13 is lockably mounted on the guide rail 21. After the test piece 4 is determined, the vibration source 13 slides along the guide rail 21 to the desired position and is then locked onto the guide rail 21 by the locking assembly 22, ensuring that the vibration source 13 can stably output vibration excitation. Specifically, the locking assembly includes a guide rail clamp 221, which presses the guide rail 21 using a lever principle; pressing the handle releases the lock, and releasing it automatically locks it again. Through the above technical solution, i.e., the locking assembly 22 of this disclosure, one-button unlocking / locking is achieved, ensuring no accidental displacement during vibration testing and significantly improving operational efficiency.

[0056] In some embodiments, the locking assembly 22 includes a rail clamp 221 connected to the vibration source 13 and the guide rail 21 respectively. Specifically, one end of the rail clamp 221 is fixed to the bottom surface of the vibration source 13, and the other end has a claw that engages with the side edge of the guide rail 21. Through the above technical solution, that is, the clamp 221 of this disclosure improves rigid locking and completely eliminates vibration transmission loss; compared with traditional bolt locking, this design avoids thread wear caused by repeated disassembly and assembly.

[0057] In some embodiments, the vibration testing device includes an environmental chamber 3, which includes a housing 31 and an adjustment component 32. The housing 31 has an environmental chamber 311, and at least a portion of the mounting base 12 in the vibration component 1 is located in the environmental chamber 311, so that the test piece 4 is located in the environmental chamber 311. The adjustment component 32 is used to adjust the temperature and / or humidity within the environmental chamber 311. Specifically, the bottom of the housing 31 has an opening 312, through which the mounting base 12 extends into the environmental chamber 311, and the vibration source 13 is placed externally. The adjustment component 32 may include an air conditioning system and a humidifier. The air conditioning system can be any suitable existing air conditioning system, such as achieving rapid cooling by driving refrigerant circulation through a compressor, and the humidifier can dynamically balance the absolute humidity through ultrasonic atomization and condensation dehumidification. Through the above technical solution, the environmental chamber of this disclosure simulates temperature and humidity conditions, and combines vibration excitation to reproduce the real failure mode. Optionally, the adjustment component 32 may be equipped with a salt spray module to expand the corrosion vibration testing capability.

[0058] In some embodiments, the enclosure 31 has an opening 312 communicating with the environmental chamber 311. The environmental chamber 3 also includes a wind deflector 33, which is connected to the enclosure 31 and covers the opening 312. The wind deflector has a clearance opening 313 for the vibration assembly 1 to pass through. Exemplarily, the wind deflector 33 is a silicone curtain with a rectangular clearance opening 313 in the center (matching the contour of the mounting base 12), and its edges are magnetically attached to the enclosure 31. Through the above technical solution, the wind deflector 33 of this disclosure maintains stable temperature and humidity while allowing vibration to transmit freely; compared to a rigid cover, the flexible design avoids resonance interference. Optionally, the clearance opening 313 can be designed as a retractable pleated skirt structure.

[0059] In some embodiments, the wind deflector 33 is made of a flexible material. Specifically, the flexible material can be selected from heat-resistant silicone or fluororubber to ensure sealing and fatigue resistance. Through the above technical solution, the flexible wind deflector 33 of this disclosure is not easy to crack under long-term vibration and can fit the mounting base 12 of different shapes.

[0060] In some embodiments, the vibration source 13 includes an electromagnetic vibration table 131, which is used to provide unidirectional vibration. Specifically, the vibration spectra of the plurality of electromagnetic vibration tables 131 are independent of each other, including at least one parameter among frequency range, amplitude range, and phase difference that can be set independently.

[0061] The vibration testing apparatus disclosed herein has the following advantages: 1. By applying differentiated excitations to both ends of the test piece 4 using the vibration component 1, the composite vibration conditions of new energy vehicles can be accurately reproduced; 2. Based on the design of the hexahedral topology mounting base 12, by simply switching the connection between the test piece 4 and different mounting surfaces, the direction of vibration excitation applied to the test piece 4 along the X2 / Y2 / Z2 axes can be changed, and a single device can provide the effect of three-axis vibration simulation. 3. By cooperating with the mounting base 2 and the mounting seat 12, vibration testing under height difference, angle difference, and stress coupling effects can be achieved; 4. By adjusting the temperature and humidity of the environmental chamber 3 in coordination with the vibration component 1, a coupled testing environment for high and low temperatures, vibration fatigue, and mechanical displacement can be integrated.

[0062] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0063] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0064] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A vibration testing device, characterized in that, It includes multiple vibration components, each vibration component including a vibration source and a mounting base connected to the vibration source, with each mounting base connected to a different position on the test piece.

2. The vibration testing device according to claim 1, characterized in that, The device under test includes the wiring harness and / or the conduit under test.

3. The vibration testing device according to claim 2, characterized in that, The plurality of vibration components include a first vibration component and a second vibration component. The first vibration component is used to connect to a first end of the test piece, and the second vibration component is used to connect to a second end of the test piece opposite to the first end.

4. The vibration testing device according to claim 1, characterized in that, The mounting base includes at least two mounting surfaces facing different directions, such that the test piece can be selectively connected to any one or more of the mounting surfaces.

5. The vibration testing device according to claim 4, characterized in that, The at least two mounting surfaces include a first mounting surface, a second mounting surface, and a third mounting surface, wherein the first mounting surface, the second mounting surface, and the third mounting surface are perpendicular to each other.

6. The vibration testing device according to claim 5, characterized in that, The vibration source is configured to provide vibration along a first direction, wherein the first mounting surface is perpendicular to the first direction.

7. The vibration testing device according to claim 5 or 6, characterized in that, The mounting base includes a top surface, a bottom surface, and a plurality of side surfaces connected between the top surface and the bottom surface. The bottom surface is used to connect the vibration source. The top surface includes the first mounting surface, and the plurality of side surfaces include the second mounting surface and the third mounting surface.

8. The vibration testing device according to claim 4, characterized in that, Each of the mounting surfaces is provided with at least one mounting portion, such that the test piece can be selectively connected to any at least one of the mounting portions.

9. The vibration testing device according to claim 8, characterized in that, The vibration assembly also includes a locking device for connecting the test piece and the mounting portion.

10. The vibration testing device according to claim 9, characterized in that, The mounting part includes a mounting hole that engages with the locking fastener.

11. The vibration testing device according to claim 1, characterized in that, The vibration testing apparatus includes a mounting base, to which at least one of the vibration components is positionally adjustable to adjust its relative position with respect to another vibration component.

12. The vibration testing device according to claim 11, characterized in that, The mounting base includes a guide rail, and at least one of the vibration sources is movably connected to the guide rail.

13. The vibration testing device according to claim 12, characterized in that, At least one of the vibration sources is lockably locked to the guide rail by a locking assembly.

14. The vibration testing device according to claim 13, characterized in that, The locking assembly includes a rail clamp connected to the vibration source and the rail respectively.

15. The vibration testing device according to claim 1, characterized in that, The vibration testing device includes an environmental chamber, which comprises: A housing having an ambient chamber, wherein in the vibration assembly, at least a portion of the mounting base is located within the ambient chamber such that the test piece is located within the ambient chamber; and An adjustment component, disposed on the enclosure, is used to adjust the temperature and / or humidity within the environmental chamber.

16. The vibration testing device according to claim 15, characterized in that, The enclosure has an opening communicating with the environmental chamber. The environmental enclosure also includes a windbreak connected to the enclosure and covering the opening. The windbreak has a clearance opening for the vibration assembly to pass through.

17. The vibration testing device according to claim 16, characterized in that, The windshield is made of flexible material.

18. The vibration testing device according to claim 1, characterized in that, The vibration source includes an electromagnetic vibration table, which is used to provide unidirectional vibration.

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