Vibration test device

Abstract

Disclosed in the present application is a vibration test device, comprising a magnetic field generating device and a vibration plate. An induction ring and a test piece placement area are provided on the vibration plate. One end of the vibration plate is fixed, and the other end thereof extends toward the magnetic field generating device. The induction ring is located within the magnetic field generating device. The magnetic field generating device generates a constant magnetic field and applies an alternating current to the induction ring. The induction ring reciprocates in the magnetic field to drive the vibration plate to vibrate vertically. In the present invention, by means of the electromagnetic induction effect, the induction ring is subjected to a force in the magnetic field and drives the vibration plate to vibrate. The vibration test device has the characteristics of a high vibration frequency and an extremely large acceleration, and achieves ultra-high-magnitude vibration by using a resonant frequency of the vibration plate.

Description

A vibration testing device

[0001] This application is based on and claims priority to Chinese Patent Application No. CN202411223544.4, filed on September 2, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of mechanical vibration technology, and in particular to a vibration testing device. Background Technology

[0003] With the continuous advancement of science and technology and the rapid development of industry, vibration devices are constantly being innovated and improved in design and application. In the future, vibration devices will focus more on the development of intelligence, automation, and efficiency to meet more complex and diverse testing, processing, or treatment needs. Vibration devices refer to equipment or systems that can generate mechanical vibrations and are widely used in basic engineering and technological sciences, mechanical engineering, power and electrical engineering, product application-related engineering and technology, and other fields.

[0004] Currently, most vibration structures are mechanical; however, during normal operation, they are often limited by vibration frequency and acceleration, which cannot meet testing requirements.

[0005] Therefore, there is a need to provide a vibration testing device with high vibration frequency and extremely large acceleration.

[0006] Any prior art mentioned in the specification does not imply confirmation or suggestion that such prior art constitutes part of the general common knowledge in any jurisdiction, or that it can be reasonably expected that such prior art will be understood, regarded as relevant and / or combined with other prior art by a person skilled in the art. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, this application provides a vibration testing device.

[0008] The technical solution of this application is as follows:

[0009] A vibration testing apparatus includes a magnetic field generating device and a vibrating plate. The vibrating plate is provided with a sensing ring and a test piece placement area. One end of the vibrating plate is fixed, and the other end extends toward the magnetic field generating device. The sensing ring is located inside the magnetic field generating device.

[0010] The magnetic field generating device forms a constant magnetic field and applies an alternating current to the induction ring. The induction ring reciprocates in the magnetic field and drives the vibrating plate to vibrate up and down.

[0011] As a further improvement of the embodiments of this application, the magnetic field generating device includes a fixed frame and a magnetic ring disposed on the fixed frame. The magnetic ring has an opening, and a magnetic field coil is surrounded on the magnetic ring. The magnetic field coil is energized with direct current, and the magnetic field is formed in the opening. One end of the vibrating plate is disposed on the fixed frame, and the other end extends into and passes through the opening. The induction ring is located in the opening.

[0012] As a further improvement to the embodiments of this application, the two ends of the opening are vertically distributed, and the vibrating plate is horizontally arranged.

[0013] As a further improvement to the embodiments of this application, the method for applying alternating current to the induction ring is as follows:

[0014] The induction ring is supplied with alternating current directly from an external power source;

[0015] Alternatively, an alternating electric field generator can be used to generate an alternating electric field, and the induction ring can be placed in the alternating electric field, whereby the induction ring generates an alternating current.

[0016] As a further improvement to the embodiments of this application, the alternating electric field generating device includes an upper driving coil and a lower driving coil respectively disposed at both ends of the opening, and both the upper driving coil and the lower driving coil are energized with alternating current.

[0017] As a further improvement to the embodiments of this application, both ends of the opening are parallel to the vibrating plate.

[0018] As a further improvement to the embodiments of this application, the lower end of the vibrating plate is provided with an adjustment component for adjusting the weight.

[0019] As a further improvement to the embodiments of this application, the adjusting component includes multiple adjusting plates, the multiple adjusting plates having different masses.

[0020] As a further improvement to the embodiments of this application, the test specimen placement area is located at the end of the vibration plate away from the fixing frame.

[0021] As a further improvement of the embodiments of this application, the fixing frame includes a base and a support. The bottom of the magnetic ring is provided with a through hole for the support to pass through. The first end of the support is connected to the base, and the second end of the support passes through the through hole and enters the magnetic ring. The vibration plate is disposed on the second end of the support.

[0022] According to the above-described scheme, the beneficial effects of this application are as follows:

[0023] This application provides a vibration testing device that utilizes the electromagnetic induction effect of an induction ring to be subjected to force in a magnetic field and drive a vibrating plate to vibrate. It features high vibration frequency and extremely large acceleration, and achieves ultra-large-scale vibration by utilizing the resonant frequency of the vibrating plate.

[0024] The term “comprise” as used herein, and variations thereof such as “comprises”, “comprised”, “comprising”, “including”, and “containing”, do not exclude other features, components, elements, or steps unless the context clearly requires otherwise. Attached Figure Description

[0025] Figure 1 is a structural schematic diagram of this application from a first angle;

[0026] Figure 2 is a structural schematic diagram of this application from a second angle;

[0027] Figure 3 is a partial enlarged view of section A of this application.

[0028] In the figure: 1. Magnetic ring; 11. Opening; 2. Magnetic field coil; 3. Vibrating plate; 4. Induction ring; 5. Test piece; 6. Upper drive coil; 7. Lower drive coil; 8. Adjustment plate; 91. Base; 92. Support. Detailed Implementation

[0029] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0032] Referring to Figures 1-3, this application provides a vibration testing device, including a magnetic field generating device and a vibration plate 3. The vibration plate 3 is provided with an induction ring 4 and a test piece placement area. One end of the vibration plate 3 is fixed, and the other end extends toward the magnetic field generating device. The induction ring 4 is located inside the magnetic field generating device, and the test piece 5 is placed in the test piece placement area.

[0033] The magnetic field generating device forms a constant magnetic field and applies an alternating current to the induction ring 4. The induction ring 4 reciprocates in the magnetic field and drives the vibrating plate 3 and the test piece 5 to vibrate up and down. This application utilizes the electromagnetic induction effect of the induction ring 4 to be subjected to force in the magnetic field and drive the vibrating plate 3 and the test piece 5 to vibrate. The vibration acceleration index can reach 300g-500g, where g is the acceleration due to gravity. Therefore, this application has the characteristics of high vibration frequency and extremely large acceleration. It utilizes the resonant frequency of the vibrating plate 3 to achieve ultra-large-scale vibration.

[0034] As one embodiment of this application, the magnetic field generating device includes a fixed frame and a magnetic ring 1 disposed on the fixed frame. The magnetic ring 1 has an opening 11. Preferably, the two ends of the opening 11 are vertically distributed. The width of the opening 11 is in the range of 5-10mm. The width of the opening 11 can be adjusted according to the specific vibration test requirements to meet the up-and-down vibration requirements of the vibrating plate 3 and avoid the vibrating plate 3 from bumping or colliding with the two ends of the opening 11 during vibration, which would cause unnecessary impact on the vibration test. A magnetic field coil 2 is arranged around the magnetic ring 1. The magnetic field coil 2 is energized with direct current, and a constant magnetic field is formed in the opening 11. One end of the vibrating plate 3 is disposed on the fixed frame, and the other end extends into and passes through the opening 11. The induction ring 4 is located in the opening 11.

[0035] As one embodiment of this application, the vibration plate 3 is set horizontally so that the vibration plate 3 is perpendicular to the magnetic field direction, which improves the stability of the vibration plate 3 and the test piece 5 in vertical vibration, so that the test piece 5 is only subjected to vertical force during vibration, avoiding unnecessary influence of other forces on the vibration of the test piece 5.

[0036] As one embodiment of this application, there are several methods for applying alternating current to the induction ring 4:

[0037] Method 1: Directly supply alternating current to the induction ring 4 via an external power source;

[0038] Method 2: Use an alternating electric field generator to generate an alternating electric field and place the induction ring 4 in the alternating electric field. The induction ring 4 generates an alternating current in the alternating electric field.

[0039] As an embodiment of this application, this application adopts method two to apply alternating current to the induction ring 4, with the following structure: the alternating electric field generating device includes an upper driving coil 6 and a lower driving coil 7 respectively disposed at both ends of the opening 11. Both the upper driving coil 6 and the lower driving coil 7 are energized with alternating current. The induction ring 4 generates an induced current in the alternating electric field, thereby forming an alternating current. By using alternating current to the stationary upper driving coil 6 and lower driving coil 7 to indirectly generate an induced current in the induction ring 4 instead of directly applying alternating current to the induction ring 4, it is possible to effectively avoid unnecessary influence on the vibration test results caused by poor contact or loose joints between the induction ring 4 and the power supply system during vibration, thereby improving the stability and reliability of the vibration test.

[0040] As one embodiment of this application, both ends of the opening 11 are parallel to the vibrating plate 3, so that the magnetic field lines in the opening 11 are evenly distributed in the opening 11 and all the magnetic field lines have the same length, so that the induction ring 4 is subjected to uniform force in the magnetic field, thereby improving the stability and reliability of the vibration test.

[0041] As one embodiment of this application, the lower end of the vibration plate 3 is provided with an adjustment component for adjusting the weight. By adjusting the weight through the adjustment component, the vibration plate 3 as a whole can have different resonance frequencies. At the resonance frequency, the test piece 5 can be subjected to extremely large vibration acceleration. Therefore, by adjusting the adjustment component, the test requirements of different test pieces 5 can be met, thereby improving the applicability of the vibration test device and enhancing its compatibility.

[0042] As one embodiment of this application, the adjustment component can adopt the following two structures:

[0043] Structure 1: The adjustment component includes a weight pan and weights set on the vibrating plate 3. The weight is adjusted by adjusting the total amount of weights placed in the weight pan, thereby adjusting the resonance frequency of the vibrating plate 3.

[0044] Structure 2: The adjustment component includes multiple adjustment plates 8 with different masses. By replacing different adjustment plates, the resonance frequency of the vibrating plate 3 can be adjusted.

[0045] As one embodiment of this application, the adjustment plate 8 is positioned directly below the induction ring 4. The vibration power of the vibrating plate 3 comes from the electromagnetic induction effect of the induction ring 4. Therefore, positioning the adjustment plate 8 directly below the induction ring 4 allows for a more intuitive and effective adjustment of the resonant frequency of the vibrating plate 3, improving the intuitiveness and efficiency of the adjustment and avoiding energy waste.

[0046] As one embodiment of this application, the test specimen placement area is set at the end of the vibration plate 3 away from the fixed frame. The vibration plate 3 swings with the end fixed to the fixed frame as the fulcrum. Therefore, the greater the swing amplitude of the part of the vibration plate 3 that is farther away from the fixed frame, the more the test specimen placement area is set at the end farthest from the fixed frame, which can increase the vibration amplitude of the test specimen 5 and improve the accuracy and reliability of the vibration test.

[0047] As one embodiment of this application, the fixing frame includes a base 91 and a support 92. The bottom of the magnetic ring 1 is provided with a through hole for the support 92 to pass through. The first end of the support 92 is connected to the base 91, and the second end of the support 92 passes through the through hole and enters the magnetic ring 1. The vibration plate 3 is set on the second end of the support 92. Setting the support 92 inside the magnetic ring 1 can improve the utilization rate of the internal space of the magnetic ring 1 and effectively save the overall volume of the vibration test device. The magnetic ring 1 can effectively protect the support 92 and the vibration plate 3, preventing the fixed position of the support 92 and the vibration plate 3 from being damaged by the outside. The vibration plate 3 is located entirely inside the magnetic ring 1, and only one end used to place the test piece 5 extends out of the magnetic ring 1 through the opening 11, which makes it convenient for the staff to place the test piece 5 on the vibration plate 3 and improves the work efficiency of the staff.

[0048] As one embodiment of this application, the distance between the magnetic field coil 2 and the two ends of the opening 11 is the same, which can ensure that the magnetism of the magnetic field coil 2 is smoothly transmitted to both ends of the opening 11 and remains uniform, thereby forming a stable magnetic field at the opening 11. This avoids the magnetic field from becoming unstable due to the excessive distance between the magnetic field coil 2 and one end of the opening 11, which would cause unnecessary impact on the vibration test.

[0049] In summary, this application provides a vibration testing device that utilizes the electromagnetic induction effect of the induction ring 4 to induce vibration in a magnetic field, thereby driving the vibrating plate 3 and the test piece 5 to vibrate. The vibration acceleration can reach 300g-500g. This application features high vibration frequency and extremely large acceleration, achieving ultra-large-scale vibration by utilizing the resonant frequency of the vibrating plate 3. The horizontal setting of the vibrating plate 3 ensures that it is perpendicular to the magnetic field direction, improving the stability of the vertical vibration of the vibrating plate 3 and the test piece 5. This ensures that the test piece 5 is only subjected to vertical forces during vibration, avoiding unnecessary influence from forces in other directions. The device indirectly induces current in the induction ring 4 by passing alternating current through the stationary upper drive coil 6 and lower drive coil 7, instead of directly applying current to the induction ring 4. Adding alternating current can effectively prevent the induction ring 4 and the power supply system from having unnecessary impact on the vibration test results due to poor contact or loose joints during vibration, thus improving the stability and reliability of the vibration test. By adjusting the adjustment components, the test requirements of different test pieces 5 can be met, thus improving the applicability and compatibility of the vibration test device. Setting the test piece placement area at the end furthest from the fixed frame can increase the vibration amplitude of the test piece 5, thereby improving the accuracy and reliability of the vibration test. Setting the support 92 inside the magnetic ring 1 can improve the utilization rate of the internal space of the magnetic ring 1 and effectively save the overall volume of the vibration test device. Moreover, the magnetic ring 1 can effectively protect the support 92 and the vibration plate 3, preventing the fixed position of the support 92 and the vibration plate 3 from being damaged by external factors.

[0050] It should be emphasized that the above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A vibration testing apparatus, characterized in that, It includes a magnetic field generating device and a vibrating plate (3), the vibrating plate (3) is provided with an induction ring (4) and a test piece placement area; one end of the vibrating plate (3) is fixed and the other end extends toward the magnetic field generating device; the induction ring (4) is located inside the magnetic field generating device; The magnetic field generating device forms a constant magnetic field and applies an alternating current to the induction ring (4). The induction ring (4) reciprocates in the magnetic field and drives the vibrating plate (3) to vibrate up and down.

2. The vibration testing apparatus according to claim 1, characterized in that, The magnetic field generating device includes a fixed frame and a magnetic ring (1) set on the fixed frame. The magnetic ring (1) has an opening (11). A magnetic field coil (2) is arranged around the magnetic ring (1). The magnetic field coil (2) is energized with direct current, and the magnetic field is formed in the opening (11). One end of the vibrating plate (3) is set on the fixed frame, and the other end extends into and passes through the opening (11). The induction ring (4) is located in the opening (11).

3. The vibration testing apparatus according to claim 2, characterized in that, The two ends of the opening (11) are vertically distributed, and the vibrating plate (3) is horizontally arranged.

4. The vibration testing apparatus according to claim 2, characterized in that, The method for applying alternating current to the induction ring (4) is as follows: An alternating current is directly supplied to the induction ring (4) by an external power source; Alternatively, an alternating electric field generator can be used to generate an alternating electric field and the induction ring (4) can be placed in the alternating electric field, whereby the induction ring (4) generates an alternating current.

5. The vibration testing apparatus according to claim 4, characterized in that, The alternating electric field generating device includes an upper driving coil (6) and a lower driving coil (7) respectively disposed at both ends of the opening (11), and both the upper driving coil (6) and the lower driving coil (7) are powered by alternating current.

6. The vibration testing apparatus according to claim 5, characterized in that, Both ends of the opening (11) are parallel to the vibrating plate (3).

7. The vibration testing apparatus according to claim 1, characterized in that, The lower end of the vibrating plate (3) is provided with an adjustment component for adjusting the weight.

8. The vibration testing apparatus according to claim 7, characterized in that, The adjustment component includes multiple adjustment plates (8), and the multiple adjustment plates (8) have different masses.

9. The vibration testing apparatus according to claim 2, characterized in that, The test specimen placement area is located at one end of the vibration plate (3) away from the fixed frame.

10. The vibration testing apparatus according to claim 2, characterized in that, The fixing frame includes a base (91) and a support (92). The bottom of the magnetic ring (1) is provided with a through hole for the support (92) to pass through. The first end of the support (92) is connected to the base (91). The second end of the support (92) passes through the through hole and enters the magnetic ring (1). The vibration plate (3) is set on the second end of the support (92).

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