A vibration detection device

Abstract

The application provides a vibration detection device for detecting the vibration direction of a vibrating part, which comprises a vibration conduction mechanism and an imaging mechanism, the vibration conduction mechanism comprises a conduction component and a light source, the conduction component has a first end and a second end, the first end is used for being connected to the vibration area of the vibrating part, the second end extends in the direction away from the first end, and the light source is arranged at the second end; the imaging mechanism comprises a projection hole and an imaging plate, and the projection hole and the imaging plate are arranged one by one along a first direction, a second direction and a third direction, the projection hole and the imaging plate are arranged one by one, and a plurality of projection holes enclose a containing space, the light source is located in the containing space, and the projection hole is arranged closer to the light source than the imaging plate; wherein the first direction, the second direction and the third direction are perpendicular to each other. The application has the advantages of simple structure, low cost, simple operation of vibration test, convenience in carrying and convenience in vibration test at any site.

Description

Technical Field

[0001] This invention relates to the field of detection device technology, and in particular to a vibration detection device. Background Technology

[0002] The car body (such as the engine compartment) is prone to resonance due to engine vibration. R&D engineers need to determine the location and direction of the vibration in order to improve the structure of related parts. Currently, two tools can be used to determine the vibration direction of car body parts: CAE analysis (computer-aided engineering analysis) and experimental testing.

[0003] CAE analysis typically provides an approximate simulation result. The simulation results are strongly correlated with the analyst's reasonable mesh generation, which can lead to distortion in the CAE simulation results.

[0004] Some manufacturers produce professional vibration testing benches that can perform specialized tests on component vibration. However, these benches are extremely expensive, often costing tens of millions of yuan, and can only test specific components or locations. If a vehicle is to be tested in a field environment, it needs to be returned to the laboratory, resulting in high time and cost.

[0005] Therefore, a new solution is needed to address the aforementioned technical problems. Summary of the Invention

[0006] This invention provides a vibration detection device to solve the technical problems of high investment cost and low portability in vibration detection of vibrating parts.

[0007] This invention provides a vibration detection device for detecting the vibration direction of a vibrating component. The vibration detection device includes:

[0008] A vibration transmission mechanism includes a transmission component and a light source. The transmission component has a first end and a second end. The first end is used to connect to the vibration region of the vibrating part, and the second end extends in a direction away from the first end. The light source is disposed at the second end. An imaging mechanism includes projection holes and an imaging plate. The projection holes and the imaging plate are provided along a first direction, a second direction, and a third direction. The projection holes and the imaging plate are arranged in a one-to-one correspondence, and a plurality of projection holes enclose a receiving space. The light source is located within the receiving space. The projection holes are positioned closer to the light source than the imaging plate. The light emitted by the light source passes through the projection holes and forms an image on the imaging plate. The first direction, the second direction, and the third direction are perpendicular to each other.

[0009] In one embodiment of the present invention, two opposing projection holes and two opposing imaging plates are provided along the first direction, the second direction and the third direction, a plurality of projection holes are arranged to form a first sphere, a plurality of imaging plates are arranged to form a second sphere, the first sphere and the second sphere are concentrically arranged, and the light source is located at the center of the first sphere.

[0010] In one embodiment of the present invention, the projection hole corresponds to the center of the imaging plate, and the imaging plate is provided with a size grid, the center of the size grid being the center of the imaging plate.

[0011] In one embodiment of the present invention, the imaging mechanism further includes a projection bracket, the projection bracket including projection blocks, and having two opposing projection blocks along the first direction, the second direction and the third direction, each projection block being provided with a projection hole.

[0012] In one embodiment of the present invention, the projection bracket further includes a first connecting strip, and four first connecting strips are connected circumferentially to each projection block. The four first connecting strips are distributed in a cross shape, and the projection block is connected to both ends of each first connecting strip.

[0013] In one embodiment of the present invention, the imaging mechanism further includes an imaging bracket, which is provided with a plurality of imaging brackets located on the outer periphery of the accommodating space, and each imaging bracket is simultaneously connected to one of the first connecting strips and two adjacent imaging plates.

[0014] In one embodiment of the present invention, the imaging bracket includes a second connecting strip and a third connecting strip connected to each other, the second connecting strip being connected to the first connecting strip, and the imaging plate being connected to both ends of the third connecting strip.

[0015] In one embodiment of the present invention, the conductive component includes a base and an adjustment component connected to each other. The base is used to connect to the vibration area of ​​the vibrating part. The light source is disposed on the adjustment component, and the position of the light source within the receiving space is adjusted by the adjustment component.

[0016] In one embodiment of the present invention, the adjusting component includes a locking member and at least one connecting rod. The connecting rod is hinged to the base and to two adjacent connecting rods, and the relative positions of the connecting rod and the base, as well as the relative positions of two adjacent connecting rods, are fixed by the locking member.

[0017] In one embodiment of the present invention, the light source is disposed on the connecting rod away from the base.

[0018] The beneficial effects of this invention are as follows: The vibration detection device proposed in this invention has projection holes and imaging plates arranged in three mutually perpendicular directions: a first direction, a second direction, and a third direction. The projection holes and imaging plates are arranged in a one-to-one correspondence, and multiple projection holes enclose a receiving space. The transmission component has a first end and a second end. The first end is used to connect to the vibration area of ​​the vibrating part so that the transmission component vibrates synchronously with the vibrating part. The second end extends in a direction away from the first end and is provided with a light source. The light source is located within the receiving space. Since the projection holes are arranged closer to the light source than the imaging plates, the light emitted by the light source can be imaged on the imaging plate through the projection holes. The vibration direction of the light source is determined by the imaging trajectory of the light on the imaging plate, and thus the vibration direction of the vibrating part is determined. The above structure is simple, which helps to reduce costs and simplify the operation of vibration testing. It is also easy to carry and facilitates vibration testing in any location. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0020] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a vibration detection device provided in an embodiment of the present invention.

[0021] The attached figures are labeled as follows: 1-Vibration transmission mechanism; 11-Light source; 12-Base; 13-Connecting rod; 14-Locking component; 2-Imaging mechanism; 21-Projection hole; 22-Imaging plate; 23-First sphere; 24-Second sphere; 25-Projection block; 26-First connecting strip; 27-Second connecting strip; 28-Third connecting strip. Detailed Implementation

[0022] The following specific examples illustrate the implementation of the present invention. 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. 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. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0023] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0024] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0025] Please see Figure 1 An embodiment of the present invention provides a vibration detection device for detecting the vibration direction of a vibrating part, comprising a vibration transmission mechanism 1 and an imaging mechanism 2.

[0026] The vibration transmission mechanism 1 includes a transmission component and a light source 11. The transmission component has a first end and a second end, wherein the second end of the transmission component extends in a direction away from the first end of the transmission component. The first end of the transmission component is used to connect to the vibration region of the vibrating part so that the transmission component can vibrate synchronously with the vibrating part; the second end of the transmission component is equipped with the light source 11, which vibrates synchronously with the transmission component.

[0027] For example, the imaging mechanism 2 is not in contact with the vibration transmission mechanism 1, which helps to avoid the imaging mechanism 2 being affected by the vibration of the vibration transmission mechanism 1, thereby avoiding synchronous vibration with the vibration transmission mechanism 1, and thus improving the accuracy of detection. Furthermore, the imaging mechanism 2 is placed away from the vibrating parts, which helps to avoid the imaging mechanism 2 being affected by the vibration of the vibrating parts, thereby avoiding synchronous vibration with the vibrating parts, and thus improving the accuracy of detection.

[0028] The imaging mechanism 2 includes projection holes 21 and imaging plates 22. Projection holes 21 and imaging plates 22 are provided along a first direction, a second direction, and a third direction, with each projection hole 21 and imaging plate 22 corresponding to the other. Multiple projection holes 21 enclose a receiving space, within which the light source 11 is located. The projection holes 21 are positioned closer to the light source 11 than the imaging plates 22, so that the light emitted from the light source 11 passes through the projection holes 21 and forms an image on the imaging plates 22.

[0029] Among them, the first direction, the second direction, and the third direction are all perpendicular to each other. Please refer to [link / reference]. Figure 1 For example, the first direction is attached. Figure 1 The X direction is in the middle, and the second direction is attached. Figure 1 In the Y direction, the third direction is attached. Figure 1 The imaging plate 22 located in the X direction can determine the vibration values ​​of the light source 11 in the Y and Z directions. The imaging plate 22 located in the Y direction can determine the vibration values ​​of the light source 11 in the X and Z directions. The imaging plate 22 located in the Z direction can determine the vibration values ​​of the light source 11 in the X and Y directions. By calculating the average of all vibration values ​​in the X direction, the true vibration value of the light source 11 in the X direction can be determined; by calculating the average of all vibration values ​​in the Y direction, the true vibration value of the light source 11 in the Y direction can be determined; by calculating the average of all vibration values ​​in the Z direction, the true vibration value of the light source 11 in the Z direction can be determined.

[0030] That is, the vibration direction of the light source 11 can be determined by observing the imaging trajectory of the light from the light source 11 on the imaging plate 22. Since the light source 11 vibrates synchronously with the vibrating part, the vibration direction of the light source 11 is the same as the vibration direction of the vibrating part, thus determining the vibration direction of the vibrating part. The above structure is simple, which helps to reduce costs, simplify vibration testing operations, and is easy to carry, making it possible to conduct vibration tests in any location.

[0031] In one example, to increase the range of light from the light source 11 projecting through the projection aperture 21 onto the imaging plate 22, the projection aperture 21 corresponds to the center of the imaging plate 22. To facilitate rapid determination of vibration values ​​by the inspector, a dimensional grid is provided on the imaging plate 22. For example, by adjusting the imaging scale of the imaging mechanism 2, the side length of each dimensional grid is represented as 1 mm, 2 mm, etc., the actual offset value of the vibrating part, facilitating rapid reading by the inspector. Furthermore, the center of the dimensional grid is the center of the imaging plate 22.

[0032] In some embodiments, in order to improve the accuracy of vibration direction detection of vibrating parts, two opposing projection holes 21 and two opposing imaging plates 22 are provided along the first direction, the second direction and the third direction, so that more detection values ​​can be obtained in each direction, and thus the average value of each direction obtained is closer to the true vibration value of the vibrating parts.

[0033] In an exemplary embodiment, in order to further improve the accuracy of vibration direction detection of the vibrating component, a plurality of projection holes 21 are arranged to form a first sphere 23, and a plurality of imaging plates 22 are arranged to form a second sphere 24. The first sphere 23 and the second sphere 24 are concentrically arranged, and the light source 11 is located at the center of the first sphere 23.

[0034] For example, whether the light source 11 is located at the center of the first sphere 23 can be confirmed visually by an inspector or determined by an inspection device.

[0035] In some embodiments, to facilitate adjustment of the position of the light source 11 within the receiving space by the testing personnel, the conductive assembly includes a base 12 and an adjustment component connected together. The base 12 is used to connect to the vibration region of the vibrating component, and the light source 11 is mounted on the adjustment component. The position of the light source 11 within the receiving space can be adjusted by the adjustment component so that the light source 11 is located at the center of the receiving space, i.e., at the center of the first sphere 23.

[0036] For example, the vibrating component can be a sheet metal structural part of the vehicle body, and the bottom of the base 12 can be provided with a magnet, or the base 12 itself has a certain magnetism, so that the base 12 can be attracted to the sheet metal structural part of the vehicle body. Alternatively, the base 12 and the vibrating component can be connected by a detachable connection method such as adhesive bonding.

[0037] In one example, the adjustment component includes at least one connecting rod 13. The specific number of connecting rods 13 is not limited and can be adaptively increased or decreased according to actual needs. The connecting rods 13 are hinged to the base 12, and adjacent connecting rods 13 are also hinged to each other. By adjusting the relative position between the connecting rods 13 and the base 12, as well as the relative position between adjacent connecting rods 13, it is beneficial to adjust the light source 11 to the center position of the first sphere 23. Furthermore, by setting the connecting rods 13, the distance between the base 12 and the light source 11 can be extended, which also helps to keep the imaging mechanism 2 away from vibrating parts.

[0038] The adjustment component also includes a locking element 14, which extends the light source 11 into the first sphere 23 via the connecting rod 13 and adjusts the light source 11 to the center of the first sphere 23. Subsequently, the relative position of the connecting rod 13 and the base 12 is fixed by the locking element 14, and the relative position of two adjacent connecting rods 13 is also fixed by the locking element 14, so that the light source 11 and the base 12 are rigidly connected. This helps to ensure that the light source 11 can vibrate synchronously with the base 12, that is, the light source 11 vibrates synchronously with the vibrating parts, which helps to ensure the accuracy of the test results.

[0039] In one example, a connecting boss located at the end of the connecting rod 13 is embedded in a connecting groove of the base 12, and both the connecting boss and the connecting groove are provided with corresponding connecting holes. The locking member 14 is connected to both connecting holes simultaneously to install the connecting rod 13 on the base 12. Adjacent connecting rods 13 are also connected to each other through connecting grooves and connecting bosses, and the locking member 14 is connected to the connecting holes of both the connecting groove and the connecting boss simultaneously to connect the two adjacent connecting rods 13 together.

[0040] The locking element 14 can be a combination of screws and nuts. The screws and nuts work together to clamp the connecting groove with the connecting boss, thereby fixing the relative positions of the base 12 and the connecting rod 13, and between two adjacent connecting rods 13.

[0041] In one example embodiment, the light source 11 is mounted on a connecting rod 13 away from the base 12, which helps to extend the distance between the light source 11 and the base 12. For example, the light source 11 is located at the end of the connecting rod 13 away from the base 12, which helps to reduce the area of ​​the light source 11 that is blocked by the connecting rod 13.

[0042] For example, to facilitate observation of the image pattern projected onto the imaging plate 22 by the inspector, the light emitted by the light source 11 can be a highly saturated warm color such as red or yellow. The light source 11 can be fixed to the connecting rod 13 by welding, fastening, or other methods. The light source 11 can be an LED light.

[0043] In some embodiments, the imaging mechanism 2 further includes a projection bracket. The projection bracket includes projection blocks 25, with two opposing projection blocks 25 arranged along a first direction, a second direction, and a third direction. Each projection block 25 has a projection hole 21. By setting up the projection blocks 25, it is beneficial for inspectors to quickly identify the imaging pattern formed on the imaging plate 22 through the projection hole 21. That is, the imaging pattern with black areas around the light spot is the imaging pattern that inspectors need to focus on.

[0044] For example, projection block 25 can be configured as a ring structure.

[0045] In one example, the projection bracket also includes first connecting strips 26. Each projection block 25 is circumferentially connected to four first connecting strips 26, arranged in a cross shape. This facilitates the inspector's quick identification of the imaging pattern formed through the projection hole 21 and also allows for readings on the imaging plate 22. Furthermore, each first connecting strip 26 is connected to a projection block 25 at both ends, ensuring the stability of the connection between multiple projection blocks 25. The arrangement of the first connecting strips 26 creates multiple open areas circumferentially on the first sphere 23, allowing the light source 11 to enter the first sphere 23 from different angles. This simplifies the inspector's operation and improves the practicality of the imaging mechanism 2.

[0046] In some embodiments, the imaging mechanism 2 further includes imaging supports. Multiple imaging supports are provided and located on the outer periphery of the accommodating space, i.e., on the outer periphery of the first sphere 23, which helps to increase the movement space of the light source 11 within the first sphere 23. Each imaging support is simultaneously connected to a first connecting strip 26 and two adjacent imaging plates 22, which facilitates the connection of the imaging plate 22, the projection block 25, and the first connecting strip 26 into a whole through the imaging supports, thereby improving the structural stability of the imaging mechanism 2.

[0047] In one example, the imaging support includes a second connecting strip 27 and a third connecting strip 28 connected together. Exemplarily, the second connecting strip 27 and the third connecting strip 28 can be arranged vertically or at a certain angle. The second connecting strip 27 is connected to the first connecting strip 26, and both ends of the third connecting strip 28 are connected to imaging plates 22, thus forming multiple hollow areas. This allows the light source 11 to extend into the first sphere 23 from different angles, simplifies the operation for the inspector, and improves the practicality of the imaging mechanism 2.

[0048] For example, when placing the imaging mechanism 2, the imaging mechanism 2 can be placed stably on a structure that supports the imaging mechanism 2, such as the ground, through one of the imaging plates 22.

[0049] In summary, the vibration detection device provided by the present invention comprises projection holes and imaging plates arranged in three mutually perpendicular directions: a first direction, a second direction, and a third direction. The projection holes and imaging plates are arranged in a one-to-one correspondence, and multiple projection holes enclose a receiving space. The transmission component has a first end and a second end. The first end is used to connect to the vibration area of ​​the vibrating part so that the transmission component vibrates synchronously with the vibrating part. The second end extends in a direction away from the first end and is provided with a light source, which is located within the receiving space. Since the projection holes are arranged closer to the light source than the imaging plates, the light emitted by the light source can be imaged on the imaging plate through the projection holes. The vibration direction of the light source is determined by the imaging trajectory of the light on the imaging plate, thereby determining the vibration direction of the vibrating part. The above structure is simple, which helps to reduce costs and simplify the operation of vibration testing. It is also easy to carry and facilitates vibration testing in any location.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A vibration detection device for detecting the vibration direction of a vibrating part, characterized in that, The vibration detection device includes: A vibration transmission mechanism includes a transmission component and a light source. The transmission component has a first end and a second end. The first end is used to connect to the vibration region of the vibrating part, and the second end extends in a direction away from the first end. The light source is disposed at the second end. An imaging mechanism includes projection holes and an imaging plate. The projection holes and the imaging plate are provided along a first direction, a second direction, and a third direction. The projection holes and the imaging plate are arranged in a one-to-one correspondence, and a plurality of projection holes enclose a receiving space. The light source is located within the receiving space. The projection holes are positioned closer to the light source than the imaging plate. The light emitted by the light source passes through the projection holes and forms an image on the imaging plate. The first direction, the second direction, and the third direction are perpendicular to each other.

2. The vibration detection device according to claim 1, characterized in that: The projection holes and imaging plates are arranged opposite to each other along the first direction, the second direction and the third direction. The projection holes are arranged to form a first sphere and the imaging plates are arranged to form a second sphere. The first sphere and the second sphere are arranged concentrically, and the light source is located at the center of the first sphere.

3. The vibration detection device according to claim 1, characterized in that: The projection hole corresponds to the center of the imaging plate, and the imaging plate is provided with a size grid, the center of which is the center of the imaging plate.

4. The vibration detection device according to any one of claims 1-3, characterized in that: The imaging mechanism further includes a projection bracket, which includes projection blocks. Two projection blocks are arranged opposite each other along the first direction, the second direction, and the third direction. Each projection block is provided with a projection hole.

5. The vibration detection device according to claim 4, characterized in that: The projection bracket also includes first connecting strips, and four first connecting strips are connected to each projection block circumferentially. The four first connecting strips are distributed in a cross shape, and each first connecting strip is connected to the projection block at both ends.

6. The vibration detection device according to claim 5, characterized in that: The imaging mechanism also includes an imaging bracket, which has multiple brackets located on the outer periphery of the accommodating space. Each imaging bracket is simultaneously connected to one of the first connecting strips and two adjacent imaging plates.

7. The vibration detection device according to claim 6, characterized in that: The imaging support includes a second connecting strip and a third connecting strip connected to each other. The second connecting strip is connected to the first connecting strip, and the imaging plate is connected to both ends of the third connecting strip.

8. The vibration detection device according to any one of claims 1-3, characterized in that: The conductive assembly includes a base and an adjustment component connected together. The base is used to connect to the vibration area of ​​the vibrating part. The light source is disposed on the adjustment component, and the position of the light source within the receiving space is adjusted by the adjustment component.

9. The vibration detection device according to claim 8, characterized in that: The adjusting component includes a locking member and at least one connecting rod. The connecting rod is hinged to the base and to two adjacent connecting rods. The relative positions of the connecting rod and the base, as well as the relative positions of two adjacent connecting rods, are fixed by the locking member.

10. The vibration detection device according to claim 9, characterized in that: The light source is positioned on the connecting rod away from the base.

Images