Impact vibration measurement assembly and device

Abstract

This invention provides an impact vibration measurement assembly and device. The impact vibration measurement assembly includes a spring-loaded mounting base, a spring, an upper support plate, and a lower support plate. The lower support plate is connected to the mounting base, and the spring is connected between the upper and lower support plates, capable of vibrating vertically. A support structure is fixedly connected to the upper end of the upper support plate for fixing a counterweight. The upper support plate is slidably mounted on the upper end of the spring along the mounting base. A magnet is provided on the mounting base to create friction between the upper support plate and the mounting base. A guide structure is provided on the mounting base to maintain the movement direction of the counterweight and the upper support plate in the vibration direction of the spring. Compared with the prior art, the impact vibration measurement device in this solution has a low overall structural cost, the detection process can be observed visually, and the operation is relatively simple.

Description

Technical Field

[0001] This invention relates to the field of vehicle testing technology, specifically to an impact vibration measurement assembly and device. Background Technology

[0002] After a vehicle is started, it will be affected by various driving factors such as the driving environment during driving, which will affect the vehicle's safety status, impact its safety performance, and even cause vehicle malfunctions. In particular, after being subjected to impact, it is necessary to measure the steady-state vibration frequency of the entire vehicle and judge the abnormal conditions of the vehicle through the resonance frequency.

[0003] Regarding frequency measurement, there are direct counting methods that count the pulses passing through a predetermined selected time period, methods that accurately measure the pulse period and calculate the reciprocal of the frequency by taking the reciprocal of the time, and methods that obtain the frequency by obtaining all modulation signals. These methods can accurately measure vibration frequency, but they are limited by the fact that vibration acceleration sensors can detect and analyze 5Hz-2048Hz, and there is a serious distortion problem in the analysis of ultra-low frequencies below 5Hz, which are most common in vehicles.

[0004] Regarding measurement scenarios, for example, patent CN102809474A discloses a whole-vehicle vibration testing device. During operation, the first and second rotating wheels cooperate to form a cam mechanism. This cam mechanism rotates under the drive of a driving device, which in turn drives the guide rod to move up and down via the rollers. This converts the rotation of the first and second rotating wheels into the reciprocating motion of the guide rod. The guide rod drives the wheel support plate to reciprocate, thereby achieving the purpose of whole-vehicle vibration testing. This cam-type structure has high transmission efficiency, low structural wear, and a long service life. Furthermore, the driving device does not need to reverse during operation to complete the corresponding driving work, greatly reducing structural wear and energy loss of the driving device. This results in a corresponding improvement in the service life and working efficiency of the whole-vehicle vibration testing device. Vibration measurement is used to detect the vibration of the equipment. The equipment is designed for laboratory vertical vibration testing of whole vehicles, therefore it cannot measure vehicles under real road conditions or perform vibration measurements on the vehicle itself.

[0005] Regarding the measurement process, for example, patent CN107490428A provides a vibration visualization element, vibration measurement system, and vibration measurement method that can visualize vibrations applied to the object being measured. The vibrating object is transmitted and refracted through optical images, then optically identified and counted, and finally, frequency results are obtained through spectral analysis. However, optical images are limited by the optical physical transmission path and cannot measure relatively moving objects with inaccessible parts in between.

[0006] Currently, vehicle vibration measurement mainly uses multiple vibration sensors combined with a data acquisition unit and connected software to perform a series of analyses and calculations to accurately calculate the vehicle's resonant frequency. However, this series of devices is expensive, has a limited frequency measurement range, and requires specialized personnel to operate, making it relatively complex to use. Summary of the Invention

[0007] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an impact vibration measurement assembly and device to solve the technical problems of complex operation and high cost in the measurement of resonance frequency during vehicle operation in the prior art.

[0008] To achieve the above and other related objectives, the present invention provides an impact vibration measurement assembly, comprising: a mounting base, a spring, an upper support plate, and a lower support plate;

[0009] The lower support plate is connected to the mounting base, and the spring is connected between the upper support plate and the lower support plate. The spring is capable of vibrating in the vertical direction.

[0010] The lower end of the spring is supported by the lower support plate, and the upper end of the upper support plate is fixedly connected to a support structure. The support structure is used to fix the counterweight. The upper support plate is slidably disposed on the upper end of the spring along the mounting base.

[0011] The mounting base is provided with a magnet, which is used to create friction between the upper support plate and the mounting base. The mounting base is provided with a guide structure, which is used to keep the movement direction of the counterweight and the upper support plate in the vibration direction of the spring.

[0012] Furthermore, the support structure includes an upper support column, a sleeve, and fasteners. A counterweight can be placed on the upper support column, the sleeve is used to press against the counterweight, and the fasteners are used to fix the sleeve on the upper support column to limit its position.

[0013] According to the above technical means, after placing a counterweight on the upper support and placing an appropriate number of counterweights on the upper support, the upper end of the counterweights is pressed against the support by the sleeve and locked with fasteners, so that the counterweights are fixed on the upper support. This ensures that the counterweights will not shake or fall when the impulse vibration measurement assembly is in use, and that the counterweights are fixedly supported.

[0014] Furthermore, the guide structure includes a guide plate fixed on the mounting base, the guide plate having a guide hole, and the upper support column being slidably connected within the guide hole.

[0015] Based on the above technical means, by restricting the sliding position of the upper support by the guide plate, the movement direction of the upper support plate and the counterweight can be restricted to the vibration direction of the spring.

[0016] Furthermore, the mounting base is provided with a base plate, and a lower support column is fixedly connected to the lower support plate. The lower support column can be fixed to the base plate, and the position of the lower support column and the base plate is adjustable.

[0017] According to the above technical means, by connecting the lower support column and the base plate, the lower support plate is fixedly connected to the mounting base, which facilitates the support of the lower end of the spring so that it vibrates in the vertical direction. At the same time, the position of the lower support column is adjustable, and the overall position of the spring and its related structures can be adjusted as needed.

[0018] Furthermore, the upper support plate has a T-shaped cross-section, and the upper support plate and the magnet are located on opposite sides of the mounting base, with the magnet arranged vertically.

[0019] According to the above technical means, the T-shaped upper support plate is easy to attract with the magnet, so that there is sufficient friction between the upper support plate and the mounting base, so that when the upper support plate is carried up and down along the mounting base by the spring, the magnet guides and limits the upper support plate.

[0020] Furthermore, a fixing plate is provided on the mounting base above the base plate, and a limiting hole is provided on the fixing plate, and the upper part of the lower support column is slidably connected to the limiting hole.

[0021] Based on the aforementioned technical means, the fixing plate and the limiting hole can restrict the direction of the lower support column's vertical movement, so that the position of the lower support column will not change when its vertical position is adjusted.

[0022] Furthermore, the lower part of the lower support column is provided with external threads, and the base plate is provided with through holes. Nuts are threadedly connected to both the upper and lower parts of the lower support column above and below the base plate. The lower part of the lower support column can be fixed to the base plate by rotating the two nuts relative to each other.

[0023] According to the above-mentioned technical means, by rotating the nut along the lower part of the lower support column, the nut can be positioned at different locations on the lower support column, thereby fixing the lower support column to the base plate. On the one hand, this can firmly connect the lower support column to the base plate, and on the other hand, it facilitates the adjustment of the position of the lower support column on the base plate, so as to adjust the overall position of the spring.

[0024] Furthermore, a base is provided below the mounting base, which is used to support the mounting base.

[0025] Based on the aforementioned technical means, the base facilitates the vertical use of the entire impact vibration measurement assembly, and the base design makes the use of the impact vibration measurement assembly more convenient.

[0026] Accordingly, the present invention also provides an impact vibration measuring device, comprising:

[0027] Multiple impact vibration measurement assemblies, wherein the impact vibration measurement assembly is any of the impact vibration measurement assemblies described above;

[0028] An assembly connector for connecting and fixing the various impact vibration measurement assemblies in parallel.

[0029] Furthermore, the impact vibration measurement assembly consists of 4-8 units, capable of measuring frequencies from 0.1Hz to 50Hz.

[0030] Based on the above technical means, by setting the system natural frequency of a single impact vibration measurement assembly, with each natural frequency interval ≤3Hz, the measurement of frequencies from 0.1Hz to 50Hz can be achieved.

[0031] Furthermore, the assembly connector includes a mounting post and an assembly connecting plate. The mounting base is provided with a mounting post, and the assembly connecting plate connects the mounting posts on adjacent mounting bases.

[0032] Based on the above technical means, the assembly connecting plate and mounting column facilitate the fixed connection of multiple impact vibration measurement assemblies into one unit to form an impact vibration measurement device for detecting the resonance frequency during vehicle operation.

[0033] Furthermore, the mounting base is provided with multiple sets of mounting posts, each set of mounting posts having at least two posts, and the assembly connecting plate fixes the two sets of mounting posts on two adjacent mounting bases together.

[0034] Based on the above technical means, by setting multiple mounting columns in each group, the assembly connection plate can be more firmly connected when connecting two impact vibration measurement assemblies.

[0035] Furthermore, the assembly connector is provided with multiple slots, and the slots are connected to the mounting post by an interference fit.

[0036] Based on the aforementioned technical means, the interference fit between the slot and the mounting column can quickly and securely connect the two impact vibration measuring devices.

[0037] As described above, this invention, based on the aforementioned technical means, installs the impact vibration measuring device inside the vehicle. A suitable counterweight is placed on the upper support pillar. By observing the spring's vibration during vehicle operation using its natural frequency, the resonant frequency of the impact is obtained. During use, the impact vibration measuring device can be used to measure the resonant frequency multiple times during vehicle operation by adjusting the number of impact vibration measuring assemblies and the counterweights, thereby obtaining resonant frequency measurement data. Compared to existing technologies, this solution achieves the detection of the resonant frequency during vehicle operation through the combined mechanical structure of the spring and counterweights. The overall structure of the impact vibration measuring device in this solution has low cost, and the detection process can be performed visually, making operation relatively simple.

[0038] The various systems and components of a vehicle detected in this invention possess certain natural frequencies, which differ depending on the vehicle's condition. During vehicle operation, excitation sources such as the powertrain, tires, and driveshaft generate continuous frequency excitation sources ranging from low to high, which may cause resonance problems in the system or component. Different vehicle configurations have different natural frequencies, yet the resulting resonance phenomena are similar; therefore, resonance frequency measurement is necessary to diagnose faulty systems or components. The measuring device in this invention, through the coordination of the natural frequency of a spring and counterweights, is placed inside the vehicle. By observing the vibration amplitude of the spring on a particular measuring assembly, the range of resonance frequencies can be roughly determined. The frequencies of each individual measuring assembly are then adjusted using counterweights to bring them closer to the resonance frequency. Through multiple measurements, the frequency intervals between individual measuring assemblies are gradually reduced, improving measurement accuracy until the resonance frequency at which the vehicle malfunctions is determined. Since the frequency detectable by a single measuring assembly can be changed by adding counterweights, low-frequency resonant frequencies can be measured. Compared to existing technologies, the measuring device in this solution has a wider detection range in low frequencies. Furthermore, because the measuring device in this solution is a purely mechanical structure, its size can be designed to be reasonable, making it easy to carry and use, which greatly increases its applicability. In addition, the measuring device in this solution determines the resonant frequency range by observing the vibration of the spring, which does not place high demands on the user and increases the practicality of the measuring device. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of an example impact vibration measuring device of the present invention;

[0040] Figure 2 This is a front view of an example impact vibration measuring device of the present invention;

[0041] Figure 3 This is a rear view of an example impact vibration measuring device of the present invention;

[0042] Figure 4 for Figure 3 Top view of the connecting plate of the central assembly;

[0043] Figure 5 This is a side view of an example of an impact vibration measurement assembly of the present invention;

[0044] Figure 6 Another example of the present invention is an impact vibration measuring device.

[0045] The components include: impact vibration measurement assembly 100, spring 110, upper support plate 111, lower support plate 112, upper support column 120, counterweight 121, sleeve 122, fastener 123, lower support column 130, external thread 131, nut 132, mounting base 140, base plate 141, through hole 142, guide plate 143, guide hole 144, fixing plate 145, limiting hole 146, magnet 150, base 160, assembly connecting plate 200, slot 201, and mounting column 202. Detailed Implementation

[0046] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0047] It should be noted that the illustrations provided in the following embodiments are merely schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes and to facilitate understanding and reading by those skilled in the art. They are not intended to limit the implementation conditions of the present invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0048] This invention provides a mechanical impact vibration measuring device, which includes multiple impact vibration measuring assemblies 100. These assemblies 100 are connected and fixed using assembly connectors. Each impact vibration measuring assembly 100 can be any of the impact vibration measuring assemblies 100 described in the following embodiments. Figure 1 , Figure 2 and Figure 5 As shown, the impact vibration measurement assembly 100 includes a mounting base 140, a spring 110, an upper support plate 111, and a lower support plate 112. The lower support plate 112 is connected to the mounting base 140, and the spring 110 is connected between the upper support plate 111 and the lower support plate 112. The spring 110 is capable of vibrating in the vertical direction. The lower end of the spring 110 is supported by the lower support plate 112, and a support structure is fixedly connected to the upper end of the upper support plate 111. The support structure is used for fixing... A fixed counterweight 121 is provided, and the upper support plate 111 is slidably disposed on the upper end of the spring 110 along the mounting base 140. A magnet 150 is provided on the mounting base 140, which is used to create friction between the upper support plate 111 and the mounting base 140. A guide structure is provided on the mounting base 140, which is used to maintain the movement direction of the counterweight 121 and the upper support plate 111 in the vibration direction of the spring 110.

[0049] The spring 110 is selected according to the required natural frequency, and the counterweight 121 is set according to the spring coefficient of the spring 110. The spring coefficient of the spring 110 is easy to calculate and easy to use with the counterweight 121 to set the natural frequency of the impact vibration measurement assembly 100; at the same time, the vibration amplitude of the spring 110 is more obvious than that of other springs, which makes it easier to observe the resonance during the use of the impact vibration measurement assembly 100.

[0050] In actual implementation, the spring 110, upper support plate 111, lower support plate 112, and supporting structure spring strut assembly are assembled as follows: the upper support plate 111 and lower support plate 112 are welded to both ends of the spring 110, and the supporting structure is welded to the upper support plate 111. A counterweight 121 can be installed on the supporting structure. In this scheme, the natural frequency of the spring 110 in the spring strut assembly is measured by the coordination of the natural frequency of the spring 110 and the counterweight 121. To facilitate the use of the spring strut assembly, the spring strut assembly is erected through the mounting base 140, ensuring that the vibration direction of the spring 110 is always vertical.

[0051] The natural frequency, also known as the natural frequency, is the frequency of vibration. Its displacement changes with time according to a sine or cosine law. The frequency of vibration is independent of initial conditions and depends only on the inherent characteristics of the system (such as mass, shape, and material). The corresponding period is called the natural period. This scheme primarily utilizes the natural frequency of the spring to determine the resonant frequency of the vehicle's movement under the spring's vibration state.

[0052] When a spring undergoes free vibration, its displacement changes sinusoidally with time, a phenomenon known as simple harmonic motion. The amplitude and initial phase of simple harmonic motion depend on the initial conditions of the vibration, while the period or frequency is independent of the initial conditions and depends on the inherent characteristics of the system, termed the natural frequency or natural period. The frequency of a spring is related to its stiffness, mass, and dimensions. When it deforms, the elastic force restores its original shape. The elastic force is primarily related to its size and stiffness, while mass affects its acceleration. For springs with the same shape, higher stiffness results in a higher frequency, and greater mass results in a lower frequency.

[0053] In the specific implementation process, the number of impact vibration measurement assemblies 100 needs to be determined based on the specific vehicle experiencing the problem, the fault phenomenon need to be low-frequency vibration, and the specific situation of the analyzed frequency range. Multiple impact vibration measurement assemblies 100 are fixedly connected using assembly connectors to form an impact vibration measurement device. The impact vibration measurement device is then stably installed inside the vehicle. In this solution, the impact vibration measurement device is installed on the vehicle's dashboard, choosing a relatively flat location. It is secured using quick-drying sponge and adhesive. After installation, wait 10 minutes for the quick-drying sponge and adhesive to completely harden. The device should then be ready when there is no noticeable shaking when pushed in three directions from the top.

[0054] During use, the distance between the magnet 150 and the upper support plate 111 is changed to adjust the friction between the upper support plate 111 and the mounting base 140. When the vehicle is impacted, the impact vibration measuring device is fixed to the vehicle, and the acceleration of both is the same. The inertial force generated by the impact vibration measuring device represents the magnitude of the vehicle's inertial force. The critical approximate value of the impact force is the upper support structure when it undergoes impact displacement and when it does not. The friction of the impact vibration measuring assembly 100 is then adjusted again until the maximum and minimum friction forces are ≤10N.

[0055] The resonance problem is addressed by adjusting the weight of the counterweight 121 in each impact vibration measurement assembly 100 to set the system natural frequency of each individual impact vibration measurement assembly 100, with the natural frequency interval between each impact vibration measurement assembly 100 ≤ 3Hz. During vehicle resonance, the natural frequency of the spring 110 with the larger amplitude is the approximate resonant frequency of the vehicle. At this point, by readjusting the natural frequencies of each impact vibration measurement assembly 100, i.e., reducing the natural frequency of each impact vibration measurement assembly 100, the natural frequency range is gradually reduced. Alternatively, the vehicle driving impact vibration measurement device can directly use multiple impact vibration measurement assemblies 100 with a frequency interval of 0.5Hz to measure simultaneously, and the impact vibration measurement assembly 100 with the largest amplitude is the vehicle resonant frequency.

[0056] During the test, the resonant frequency was mainly identified visually. Frequency with a vibration amplitude within 1 time was considered a similar frequency, and only frequencies with a significantly higher amplitude were identified as fault frequencies. The impact vibration measurement device is mainly used as a preliminary quantitative testing tool between subjective evaluation of vehicle impact vibration and high-precision objective testing. Before vehicle testing, the type of problem and whether the resonant frequency exceeds the device's detection range need to be subjectively evaluated.

[0057] The principle of measuring the resonant frequency in this solution is to measure the vehicle's resonant frequency by using the natural frequency of the spring. Therefore, the measuring device in this solution can also be applied to other equipment to measure the resonant frequency of various large-scale equipment and experimental equipment. The measurement method can refer to the above method for measuring the resonant frequency of vehicles.

[0058] Regarding the impact vibration measurement assembly 100, in some embodiments, the support structure includes an upper support column 120, a sleeve 122, and a fastener 123. A counterweight 121 can be placed on the upper support column 120, the sleeve 122 is used to abut the counterweight 121, and the fastener 123 is used to fix the sleeve 122 to the upper support column 120, limiting the position of the sleeve 122. For example, Figure 1 , Figure 2 and Figure 5As shown, a counterweight 121 is placed on the upper support 120, and a sleeve 122 is slidably fitted on the upper support 120. A fastener 123 is set above the sleeve and fitted on the outside of the upper support 120. In specific implementation, the fastener 123 can be a fastening bolt. In order to cooperate with the use of the fastening bolt, the upper part of the upper support 120 is provided with a threaded section. By rotating the position of the fastening bolt along the threaded section, the position of the sleeve 122 on the upper support 120 can be restricted. When the impact vibration measurement assembly 100 is in use, a counterweight 121 is placed according to the natural frequency required by a single impact vibration measurement assembly 100. After placing an appropriate number of counterweights 121 on the upper support 120, the upper end of the counterweights 121 is pressed against the lower end of the sleeve 122, and the position of the sleeve 122 is locked by rotating the fastening bolt along the thread section, so that the counterweights 121 are restricted on the upper support 120, so that the counterweights 121 will not shake or fall off when the impact vibration measurement assembly is in use.

[0059] Regarding the impact vibration measurement assembly 100, in some embodiments, the guiding structure includes a guide plate 143 fixed to the mounting base 140, the guide plate 143 having a guide hole 144, and the upper support column 120 slidably connected within the guide hole 144. For example, Figure 1 , Figure 2 and Figure 5 As shown, the guide plate 143 is fixed to the mounting base 140 on the right side. By limiting the sliding position of the upper support 120 by the guide plate, the movement direction of the upper support plate 111 and the counterweight 121 can be limited to the vibration direction of the spring 110.

[0060] Regarding the impact vibration measurement assembly 100, in some embodiments, a base plate 141 is provided on the mounting base 140, and a lower support column 130 is fixedly connected to the lower support plate 112. The lower support column 130 can be fixed to the base plate 141, and the position of the lower support column 130 fixed to the base plate 141 is adjustable. For example, Figure 1 , Figure 2 and Figure 5 As shown, a lower support column 130 is welded onto the lower support plate 112, and the side of the base plate 141 is fixed to the mounting base 140. The connection between the lower support column 130 and the base plate 141 secures the lower support plate 112 to the mounting base 140, facilitating the support of the lower end of the spring 110 and enabling it to vibrate vertically. Simultaneously, the position of the lower support column 130 is adjustable, allowing for adjustment of the overall position of the spring 110 and its related structures as needed. By adjusting the position of the lower support column 130 on the base plate 141, the upper height of the springs 110 in each impact vibration measuring assembly 100 is aligned, facilitating the use of the impact vibration measuring device.

[0061] Regarding the impact vibration measurement assembly 100, in some embodiments, the upper support plate 111 has a T-shaped cross-section, and the upper support plate 111 and the magnet 150 are located on opposite sides of the mounting base 140, with the magnet 150 arranged vertically. For example, Figure 1 and Figure 5 As shown, the side with the larger area on the T-shaped upper support plate 111 is in contact with the side of the mounting base 140. The magnet 150 is a strip-shaped rectangular body. By changing the magnet 150, the friction between the T-shaped upper support plate 111 and the mounting base 140 can be adjusted to adjust the critical approximate value of the impact vibration measurement assembly 100. In addition, the T-shaped upper support plate 111 and the magnet 150 are arranged so that when the upper support plate 111 is slid up and down along the mounting base 140 by the spring 110, the magnet 150 guides and limits the upper support plate 111. To facilitate the installation of the lower support plate 112, the structure of the lower support plate 112 can be consistent with the structure of the upper support plate 111. In addition, the magnet 150 can be a permanent magnet 150, which is fixed to the right side of the mounting base 140 by adhesive.

[0062] Regarding the impact vibration measurement assembly 100, in some embodiments, a fixing plate 145 is provided on the mounting base 140 above the base plate 141, and the fixing plate 145 has a limiting hole 146, the upper part of the lower support column 130 being slidably connected within the limiting hole 146. For example, Figure 1 , Figure 2 and Figure 5 As shown, after the lower support column 130 passes through the limiting hole 146, it is fixedly connected to the base plate 141, which can limit the position of the lower support column 130 in the vertical direction. When adjusting the lower height of the lower support column 130, the position of the lower support column 130 will not change, thereby ensuring the convenience of the impact vibration assembly during use.

[0063] Regarding the impact vibration measurement assembly 100, in some embodiments, the lower support column 130 has an external thread 131 at its lower part, and the base plate 141 has a through hole 142. Nuts 132 are threadedly connected to both the upper and lower parts of the lower support column 130 above and below the base plate 141. By rotating the two nuts 132 relative to each other, the lower part of the lower support column 130 can be fixed to the base plate 141. For example, Figure 1 , Figure 2 and Figure 5 As shown, by adjusting the position of the nut 132 at the lower part of the lower support column 130, the overall height position of the spring 110 support column assembly can be adjusted. This adjustment method is convenient and quick, and the position can remain stable after adjustment.

[0064] Regarding the impact vibration measurement assembly 100, in some embodiments, a base 160 is provided below the mounting base 140, the base 160 being used to support the mounting base 140. For example, Figure 1 and Figure 5 As shown, the base 160 can stably prevent the measurement of impact vibration assembly. The base 160 is provided with a vertical assembly connecting plate 200. The mounting base 140 is a vertically arranged plate. The lower end of the mounting base 140 is fixed to the assembly connecting plate 200 by connecting bolts. That is, multiple corresponding connecting holes are opened at the lower ends of the assembly connecting plate 200 and the mounting base 140. The bolts pass through the connecting holes to fix the mounting base 140 and the assembly connecting plate 200, so that the mounting base 140 can be vertically prevented and stabilized under the support of the base 160.

[0065] Regarding the impact vibration measuring device, in some embodiments, the impact vibration measuring assembly 100 comprises 4-8 units, capable of measuring frequencies from 0.1Hz to 50Hz. For example, Figure 1 , Figure 2 and Figure 6 As shown, the impact vibration measuring device is prepared for use. The impact vibration measuring device is assembled from multiple impact vibration measuring assemblies 100 through assembly connectors. In this solution, four impact vibration measuring assemblies 100 are mainly selected for assembly, and this is used as an example of this solution embodiment. The actual number of impact vibration measuring devices is not limited to four assemblies, and the number is recommended to be 4-8, which can achieve a frequency detection range of 0.1Hz-50Hz.

[0066] Regarding the impact vibration measuring device, in some embodiments, the assembly connector includes a mounting post 202 and an assembly connecting plate 200. The base 160 and the mounting seat 140 are both provided with mounting posts 202, and the assembly connecting plate 200 connects the mounting posts 202 on two adjacent bases 160 and / or mounting seats 140. For example, Figure 3 and Figure 5 As shown, the impact vibration measuring device is assembled from multiple impact vibration measuring assemblies 100 via assembly connectors. The bases 160 and mounting seats 140 on two adjacent impact vibration measuring assemblies 100 are fixedly connected by the assembly connecting plate 200 and the mounting column 202, thereby connecting two adjacent impact vibration measuring assemblies 100 into one unit.

[0067] Regarding the impact vibration measuring device, in some embodiments, both the base 160 and the mounting base 140 are provided with multiple sets of mounting posts 202, each set of mounting posts 202 having at least two posts. The assembly connecting plate 200 fixes two sets of mounting posts 202 on two adjacent bases 160 and / or two adjacent mounting bases 140. For example, Figure 3 and Figure 5As shown, in the specific implementation process, four assembly connecting plates 200 are used on the mounting bases 140 of two adjacent impact vibration measurement assemblies 100 to connect four sets of adjacent mounting columns 202 respectively. Three assembly connecting plates 200 are used on the mounting bases 140 of two adjacent impact vibration measurement assemblies 100 to connect three sets of adjacent mounting columns 202 respectively. This connection method can effectively and firmly connect two adjacent impact vibration measurement assemblies 100 into one unit, and achieve side-by-side connection, facilitating the use of the final impact vibration measurement device.

[0068] Regarding the impact vibration measuring device, in some embodiments, the assembly connector is provided with multiple slots 201, and the slots 201 are connected to the mounting post 202 by an interference fit. For example, Figure 4 As shown, the mounting post 202 is assembled by an interference fit with the slot 201 of the assembly connecting plate 200. This connection method can quickly and conveniently connect two impact vibration assemblies together, which means that the required impact vibration measuring device can be quickly assembled, and the stability and robustness of the entire impact vibration measuring device can be guaranteed.

[0069] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An impact vibration measurement assembly, characterized in that, include: Mounting base, spring, upper support plate, and lower support plate; The lower support plate is connected to the mounting base, and the spring is connected between the upper support plate and the lower support plate. The spring is capable of vibrating in the vertical direction. The lower end of the spring is supported by the lower support plate, and the upper end of the upper support plate is fixedly connected to a support structure. The support structure is used to fix the counterweight. The upper support plate is slidably disposed on the upper end of the spring along the mounting base. The mounting base is provided with a magnet, which is used to create friction between the upper support plate and the mounting base. The mounting base is provided with a guide structure, which is used to keep the movement direction of the counterweight and the upper support plate in the vibration direction of the spring. The support structure includes an upper support column, a sleeve, and fasteners. A counterweight can be placed on the upper support column, the sleeve is used to press against the counterweight, and the fasteners are used to fix the upper support column to limit the position of the sleeve. The guide structure includes a guide plate fixed on the mounting base, the guide plate having a guide hole, and the upper support column being slidably connected within the guide hole; The mounting base is provided with a base plate, and a lower support column is fixedly connected to the lower support plate. The lower support column can be fixed to the base plate, and the position of the lower support column and the base plate is adjustable. The mounting base is provided with a fixing plate above the base plate, and the fixing plate is provided with a limiting hole. The upper part of the lower support column is slidably connected to the limiting hole. The lower part of the lower support column is provided with external threads, and the base plate is provided with through holes. Nuts are threadedly connected to the lower part of the lower support column above and below the base plate. The lower part of the lower support column can be fixed to the base plate by rotating the two nuts relative to each other.

2. The impact vibration measurement assembly according to claim 1, characterized in that: The upper support plate has a T-shaped cross-section, and the upper support plate and the magnet are located on opposite sides of the mounting base. The magnet is arranged in a vertical direction.

3. The impact vibration measurement assembly according to claim 1, characterized in that: A base is provided below the mounting base, which is used to support the mounting base.

4. An impact vibration measuring device, characterized in that, include: Multiple impact vibration measurement assemblies, wherein the impact vibration measurement assembly is the impact vibration measurement assembly according to any one of claims 1-3; An assembly connector for connecting and fixing the various impact vibration measurement assemblies in parallel.

5. The impact vibration measuring device according to claim 4, characterized in that: The impact vibration measurement system consists of 4-8 units, capable of measuring frequencies from 0.1Hz to 50Hz.

6. The impact vibration measuring device according to claim 4, characterized in that: The assembly connector includes a mounting post and an assembly connecting plate. The mounting base is provided with a mounting post, and the assembly connecting plate connects the mounting posts on adjacent mounting bases.

7. The impact vibration measuring device according to claim 6, characterized in that: The mounting base is provided with multiple sets of mounting posts, each set of mounting posts having at least two posts, and the assembly connecting plate fixes the two sets of mounting posts on two adjacent mounting bases.

8. The impact vibration measuring device according to claim 7, characterized in that: The assembly connector is provided with multiple slots, and the slots are connected to the mounting post by an interference fit.

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