Vibration test device

Abstract

The utility model relates to a vibration test device which comprises a magnetic field generating device and a vibration plate, and the vibration plate is provided with an induction ring and a test piece placing area. One end of the vibration plate is fixed, and the other end of the vibration plate extends to the magnetic field generation device; the induction ring is located in the magnetic field generation device; the magnetic field generating device forms a constant magnetic field and applies alternating current to the induction ring, and the induction ring reciprocates in the magnetic field and drives the vibration plate to vibrate up and down. According to the utility model, the electromagnetic induction effect of the induction ring is utilized, the induction ring is stressed in a magnetic field and drives the vibration plate to vibrate, the vibration frequency is high, the acceleration is great, and the resonance frequency of the vibration plate is utilized to realize super-large magnitude vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical vibration, in particular to a vibration testing device. Background Art

[0002] With the continuous advancement of science and technology and the rapid development of industry, vibration devices are constantly innovating and improving in their design and application. In the future, vibration devices will focus more on the development direction of intelligence, automation, and efficiency to meet the more complex and diverse testing, processing, or handling needs. Vibration devices refer to equipment or systems that can generate mechanical vibrations. They are widely used in basic disciplines of engineering and technical sciences, mechanical engineering, power and electrical engineering, and product application-related engineering and technology.

[0003] Currently, most of them use mechanical vibration structures. However, during normal operation, they are often limited by vibration frequency and acceleration and cannot meet testing requirements.

[0004] Therefore, it is necessary to provide a vibration test device with high vibration frequency and extremely large acceleration. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a vibration testing device.

[0006] The technical solution of this utility model is as follows:

[0007] A vibration test device includes a magnetic field generating device and a vibration plate, wherein the vibration plate is provided with an induction ring and a test piece placement area; one end of the vibration plate is fixed, and the other end extends toward the magnetic field generating device; the induction ring is located within the magnetic field generating device;

[0008] The magnetic field generating device forms a constant magnetic field and applies an alternating current to the induction ring. The induction ring performs a reciprocating motion in the magnetic field and drives the vibration plate to vibrate up and down.

[0009] As a further improvement of the present invention, the magnetic field generating device includes a fixed frame, a magnetic ring arranged on the fixed frame, the magnetic ring is provided with an opening, a magnetic field coil is arranged around the magnetic ring, direct current is passed through the magnetic field coil, and the magnetic field is formed in the opening; one end of the vibration plate is provided on the fixed frame, and the other end extends into and passes through the opening; the induction ring is located in the opening.

[0010] As a further improvement of the present invention, both ends of the opening are vertically distributed, and the vibration plate is horizontally arranged.

[0011] As a further improvement of the present invention, the method of applying alternating current to the induction loop is:

[0012] directly providing an alternating current to the induction loop via an external power supply;

[0013] Alternatively, an alternating electric field generating device is used to generate an alternating electric field and the induction loop is placed in the alternating electric field, so that the induction loop generates an alternating current in the alternating electric field.

[0014] As a further improvement of the present invention, the alternating electric field generating device includes an upper driving coil and a lower driving coil respectively arranged at both ends of the opening, and alternating current is passed through the upper driving coil and the lower driving coil.

[0015] As a further improvement of the present invention, both end surfaces of the opening are parallel to the vibration plate.

[0016] As a further improvement of the present invention, an adjustment component for adjusting weight is provided at the lower end of the vibration plate.

[0017] As a further improvement of the present invention, the adjusting component includes a plurality of adjusting plates, and the masses of the plurality of adjusting plates are different.

[0018] As a further improvement of the present invention, the test piece placement area is arranged at an end of the vibration plate away from the fixing frame.

[0019] As a further improvement of the present invention, 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, the second end of the support passes through the through hole into the magnetic ring, and the vibration plate is arranged on the second end of the support.

[0020] According to the utility model of the above solution, the beneficial effects of the utility model are:

[0021] The utility model provides a vibration test device, which utilizes the electromagnetic induction effect of an induction ring to be forced in a magnetic field and drive a vibration plate to vibrate, has the characteristics of high vibration frequency and great acceleration, and utilizes the resonance frequency of the vibration plate to achieve ultra-large-scale vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the utility model from a first angle;

[0023] Figure 2 This is a schematic structural diagram of the utility model from a second angle;

[0024] Figure 3 It is a partial enlarged view of point A of the present utility model.

[0025] In the figure: 1. magnetic ring; 11. opening; 2. magnetic field coil; 3. vibration plate; 4. induction ring; 5. test piece; 6. upper drive coil; 7. lower drive coil; 8. adjustment plate; 91. base; 92. support. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] See also Figure 1-3 The utility model provides a vibration test device, comprising a magnetic field generating device and a vibration plate 3, on which an induction ring 4 and a test piece placement area are provided; one end of the vibration plate 3 is fixed, and the other end extends to the magnetic field generating device; the induction ring 4 is located in the magnetic field generating device, and the test piece 5 is placed in the test piece placement area;

[0030] 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 vibration plate 3 and the test piece 5 to vibrate up and down. The utility model utilizes the electromagnetic induction effect of the induction ring 4, which is subjected to force in the magnetic field and drives the vibration plate 3 and the test piece 5 to vibrate. The vibration acceleration index can reach 300g-500g, where g is the acceleration of gravity. Therefore, the utility model has the characteristics of high vibration frequency and extremely large acceleration, and utilizes the resonant frequency of the vibration plate 3 to achieve ultra-large-scale vibration.

[0031] As an embodiment of the present invention, the magnetic field generating device includes a fixed frame and a magnetic ring 1 arranged on the fixed frame. The magnetic ring 1 is provided with an opening 11. Preferably, the two ends of the opening 11 are vertically distributed, and the width of the opening 11 ranges from 5 to 10 mm. The width of the opening 11 can be adjusted according to the specific vibration test requirements to meet the requirements of the up and down vibration of the vibration plate 3, thereby avoiding the vibration plate 3 from colliding or colliding with the two ends of the opening 11 during the vibration process, causing unnecessary impact on the vibration test. A magnetic field coil 2 is provided around the magnetic ring 1, and direct current is passed through the magnetic field coil 2 to form a constant magnetic field in the opening 11; one end of the vibration 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.

[0032] As an embodiment of the present invention, the vibration plate 3 is arranged horizontally so that the vibration plate 3 is perpendicular to the direction of the magnetic field, thereby improving the stability of the up and down vibration of the vibration plate 3 and the test piece 5, so that the test piece 5 is only subjected to the vertical force during the vibration process, avoiding unnecessary influence of forces in other directions on the vibration of the test piece 5.

[0033] As an embodiment of the present invention, there are several methods for applying alternating current to the induction loop 4:

[0034] Method 1: directly supply alternating current to the induction loop 4 through an external power supply;

[0035] 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. That is, an alternating electric field generator is provided at both ends of the opening 11 , and the induction ring 4 generates an alternating current in the alternating electric field.

[0036] As an embodiment of the present invention, the present invention adopts method 2 to apply alternating current to the induction ring 4, and adopts the following structure: the alternating electric field generating device includes an upper drive coil 6 and a lower drive coil 7 respectively arranged at both ends of the opening 11, and the upper drive coil 6 and the lower drive coil 7 are both passed with alternating current. The induction ring 4 generates an induced current in the alternating electric field, thereby forming an alternating current. The method of passing alternating current through the stationary upper drive coil 6 and the lower drive coil 7 so that the induction ring 4 indirectly generates an induced current instead of directly applying alternating current to the induction ring 4 can effectively avoid unnecessary influence on the vibration test results due to poor contact or loose connectors between the induction ring 4 and the power supply system during the vibration process, thereby improving the stability and reliability of the vibration test.

[0037] As an embodiment of the present invention, both end surfaces of the opening 11 are parallel to the vibration plate 3, so that the magnetic flux lines in the opening 11 are evenly distributed in the opening 11 and the lengths of all magnetic flux lines are the same, so that the induction ring 4 is evenly stressed in the magnetic field, thereby improving the stability and reliability of the vibration test.

[0038] As an embodiment of the present invention, an adjusting component for adjusting the weight is provided at the lower end of the vibration plate 3. By adjusting the weight by the adjusting component, the vibration plate 3 as a whole has different resonance frequencies. At the resonance frequency, the test piece 5 can be subjected to an extremely large vibration acceleration. Therefore, by adjusting the adjusting component, the test requirements of different test pieces 5 can be met, thereby improving the applicability of the vibration test device and improving its compatibility.

[0039] As an embodiment of the present invention, the adjusting component can adopt the following two structures:

[0040] Structure 1: The adjustment component includes a weight plate and weights set on the vibration plate 3. The weight adjustment is achieved by adjusting the total amount of weights placed in the weight plate, thereby adjusting the resonant frequency of the vibration plate 3;

[0041] Structure 2: The adjustment component includes a plurality of adjustment plates 8 , and the masses of the plurality of adjustment plates 8 are different. By replacing different adjustment plates, the resonance frequency of the vibration plate 3 can be adjusted.

[0042] As an embodiment of the present utility model, the adjustment plate 8 is arranged directly below the induction ring 4. The power for the vibration of the vibration plate 3 comes from the electromagnetic induction effect of the induction ring 4. Therefore, setting the adjustment plate 8 directly below the induction ring 4 can more intuitively and effectively adjust the resonant frequency of the vibration plate 3, thereby improving the intuitiveness and efficiency of the adjustment and avoiding energy waste.

[0043] As an embodiment of the present invention, the test piece 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 a fulcrum. Therefore, the farther the part of the vibration plate 3 is from the fixed frame, the greater the swing amplitude. Therefore, setting the test piece placement area at the end farthest from the fixed frame can increase the vibration amplitude of the test piece 5 and improve the accuracy and reliability of the vibration test.

[0044] As an embodiment of the present invention, 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 into the magnetic ring 1. The vibration plate 3 is arranged on the second end of the support 92. Arranging the support 92 in 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 to prevent the position where the support 92 and the vibration plate 3 are fixed from being damaged by the outside. The vibration plate 3 is located as a whole in the magnetic ring 1, and only one end for placing the test piece 5 extends out of the magnetic ring 1 through the opening 11, which is convenient for the staff to place the test piece 5 on the vibration plate 3, thereby improving the work efficiency of the staff.

[0045] As an embodiment of the present invention, 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 the two ends of the opening 11 and remains uniform, thereby forming a stable magnetic field at the opening 11, avoiding the instability of the magnetic field due to the excessive distance between the magnetic field coil 2 and one end of the opening 11, which causes unnecessary impact on the vibration test.

[0046] In summary, the present invention provides a vibration test device, which utilizes the electromagnetic induction effect of the induction ring 4 to be subjected to force in the magnetic field and drive the vibration plate 3 and the test piece 5 to vibrate, and the vibration acceleration index can reach 300g-500g. The present invention has the characteristics of high vibration frequency and extremely large acceleration, and utilizes the resonant frequency of the vibration plate 3 to achieve ultra-large-scale vibration; the vibration plate 3 is horizontally arranged so that the vibration plate 3 is perpendicular to the direction of the magnetic field, thereby improving the stability of the up and down vibration of the vibration plate 3 and the test piece 5, so that the test piece 5 is only subjected to the vertical force during the vibration process, avoiding unnecessary influence of the force in other directions on the vibration of the test piece 5; the method of passing alternating current through the stationary upper drive coil 6 and the lower drive coil 7 so that the induction ring 4 indirectly generates induced current instead of directly passing alternating current through the induction ring 4 applies an alternating current, which can effectively avoid unnecessary influence on the vibration test results due to poor contact or loose connectors between the induction ring 4 and the power supply system during the vibration process, thereby 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, thereby improving the applicability of the vibration test device and improving the compatibility of use; the test piece placement area is set at the end farthest from the fixing frame, which can increase the vibration amplitude of the test piece 5 and improve the accuracy and reliability of the vibration test; the support 92 is set in the magnetic ring 1, which 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, and the magnetic ring 1 can effectively protect the support 92 and the vibration plate 3, thereby preventing the fixed position of the support 92 and the vibration plate 3 from being damaged by the outside.

[0047] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vibration test device, characterized in that: It comprises a magnetic field generating device and a vibration plate (3), wherein 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 in 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), so that the induction ring (4) performs reciprocating motion in the magnetic field and drives the vibration plate (3) to vibrate up and down.

2. The vibration test device according to claim 1, characterized in that: The magnetic field generating device comprises a fixing frame, a magnetic ring (1) arranged on the fixing frame, the magnetic ring (1) being provided with an opening (11), a magnetic field coil (2) being arranged around the magnetic ring (1), a direct current being passed through the magnetic field coil (2), and the magnetic field being formed in the opening (11); one end of the vibration plate (3) being provided on the fixing frame, and the other end extending into and passing through the opening (11); and the induction ring (4) being located in the opening (11).

3. The vibration test device according to claim 2, characterized in that: Both ends of the opening (11) are vertically distributed, and the vibration plate (3) is horizontally arranged.

4. The vibration test device according to claim 2, characterized in that: Alternating electric field generating devices are provided at both ends of the opening (11), the alternating electric field generating devices generate an alternating electric field, the induction ring (4) is placed in the alternating electric field, and the induction ring (4) generates an alternating current in the alternating electric field.

5. The vibration test device according to claim 4, characterized in that: The alternating electric field generating device comprises an upper drive coil (6) and a lower drive coil (7) respectively arranged at two ends of the opening (11), and both the upper drive coil (6) and the lower drive coil (7) are passed through an alternating current.

6. The vibration test device according to claim 5, characterized in that: Both end surfaces of the opening (11) are parallel to the vibration plate (3).

7. The vibration test device according to claim 1, characterized in that: An adjusting component for adjusting weight is provided at the lower end of the vibration plate (3).

8. The vibration test device according to claim 7, characterized in that: The adjustment component comprises a plurality of adjustment plates (8), and the masses of the plurality of adjustment plates (8) are different.

9. The vibration test device according to claim 2, characterized in that: The test piece placement area is arranged at one end of the vibration plate (3) away from the fixing frame.

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

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