Vibration simulation platform for shockproof detection

Abstract

The utility model relates to the technical field of vibration detection, and discloses a vibration simulation platform for shockproof detection. The vibration simulation platform for shockproof detection comprises a bottom plate, a controller, a frequency converter, an inverter and a circuit breaker are fixedly installed above the bottom plate, a spherical joint is fixedly installed above the bottom plate, a telescopic rod is fixedly installed above the spherical joint, and the telescopic rod is fixedly installed above the bottom plate. The polarity of the magnetic force generated by the electromagnet after the alternating current is introduced can periodically change along with the frequency of the alternating current, so that the electromagnet periodically adsorbs and repels the permanent magnet, the permanent magnet drives the movable plate to move downwards when being attracted by the electromagnet, the movable plate is driven to move upwards when being repulsive by the electromagnet, and the movable plate vibrates; the frequency of alternating current is adjusted through the frequency converter to achieve the effect of adjusting the vibration frequency, the position of the connecting plate is adjusted through the limiting piston to limit the maximum value of downward displacement of the movable plate, and the vibration amplitude of the movable plate is controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration detection, in particular to a vibration simulation platform for shockproof detection. Background Art

[0002] A vibration platform (also known as a vibration tester) is a test device used to simulate the vibration and shock that a product experiences under actual operating conditions. By simulating the vibration and shock experienced in actual use, it tests whether a product can withstand these external forces and maintain stable performance over time.

[0003] The existing Chinese utility model patent with reference number CN219673695U discloses a shockproof structure for a gas detection sensor, comprising a base, a placement plate provided on the top of the base, a slide plate fixedly connected to the placement plate on all sides, and a reserved groove provided on the top of the inner side of the base. The shockproof structure of the gas detection sensor is provided with a guide plate, a reserved groove, a slide plate, a placement plate, and a shock-absorbing spring. When the base senses vibration during use, the vibration is transmitted to the shock-absorbing spring, which absorbs part of the vibration. The shock-absorbing spring reciprocates up and down when absorbing the vibration, causing the slide plate to reciprocate within the reserved groove. At the same time, the guide plate is hinged and moved between the base and the placement plate. Since the movable range of the slide plate and the guide plate is limited, the frequency of movement will become smaller and smaller as the shock-absorbing spring reciprocates, thereby suppressing the excess jumping of the shock-absorbing spring after absorbing the vibration, playing a shockproof role, reducing damage to the equipment, and solving the problem of insufficient structural stability.

[0004] The existing vibration platform cannot adjust the frequency and amplitude of vibration during use, and cannot be adjusted according to usage requirements. At the same time, the existing vibration simulation platform can only generate vibration in the vertical direction during use. The platform as a whole reciprocates in a vertical state, and the platform cannot generate an inclination angle, and the simulation effect is poor. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the existing technology, the present invention provides a vibration simulation platform for shockproof detection, which has the advantages of improving the simulation effect and facilitating the adjustment of the frequency and amplitude of the vibration, thereby solving the above-mentioned technical problems.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a vibration simulation platform for shockproof detection, comprising: a base plate, a controller, a frequency converter, an inverter, and a circuit breaker are fixedly installed on the top of the base plate, a spherical joint is fixedly installed on the top of the base plate, a telescopic rod is fixedly installed on the top of the spherical joint, a reset spring is inserted through the outside of the telescopic rod, a raising frame is fixedly installed on the top of the base plate, an electromagnet is fixedly installed on the top of the raising frame, a limiting piston is fixedly installed on the center of the base plate, a connecting plate is fixedly installed on the upper end of the limiting piston, a rubber pad is fixedly installed on the top of the connecting plate, a movable plate is movably installed on the upper end of the telescopic rod, and a permanent magnet is fixedly installed below the movable plate; the frequency converter can change the frequency of the alternating current.

[0009] As a preferred technical solution of the present invention, the base plate is circular, and the spherical joint is installed in a ring shape on the outer edge of the top surface of the base plate with the center of the base plate as the reference; the base plate can limit the position of the bottom end of the telescopic rod.

[0010] As a preferred technical solution of the present invention, the telescopic rod is movably connected to the base plate via a spherical joint, and the telescopic rod is in an inclined state; the telescopic rod can facilitate position change of the movable plate.

[0011] As a preferred technical solution of the present invention, the spherical joint is also fixedly mounted on the top of the telescopic rod, and the movable plate is movably connected to the telescopic rod through the spherical joint at the top of the telescopic rod; the spherical joint can facilitate the rotation of the telescopic rod.

[0012] As an optimal technical solution of the present invention, the upper and lower ends of the reset spring are fixedly connected to the spherical joints at the upper and lower ends of the telescopic rod respectively, and the electromagnet is installed symmetrically on the top of the raising frame front and back and left and right with the center of the raising frame as the reference; the reset spring can facilitate the reset of the movable plate.

[0013] As an optimal technical solution of the present invention, the connecting plate is movably connected to the bottom plate through a limiting piston, and a rubber pad is fixedly installed at the center of the bottom surface of the movable plate; the movable plate can support the detected equipment.

[0014] As a preferred technical solution of the present invention, the permanent magnet is installed on the bottom surface of the movable plate symmetrically in front and back and left and right directions with the center of the movable plate as the reference, and the installation position of the permanent magnet matches the installation position of the electromagnet; the permanent magnet can cause the movable plate to change position under the attraction or repulsion of the electromagnet.

[0015] Compared with the existing technology, the present invention provides a vibration simulation platform for shockproof detection, which has the following beneficial effects:

[0016] 1. The utility model uses a frequency converter to convert direct current into alternating current through an inverter, and then adjusts the frequency of the alternating current through the frequency converter before passing it into an electromagnet. The polarity of the magnetic force generated by the electromagnet after the alternating current is passed through will periodically change with the frequency of the alternating current, thereby causing the electromagnet to periodically attract and repel the permanent magnet. The permanent magnet will drive the movable plate downward when it is attracted by the electromagnet, and will drive the movable plate upward when it is repelled by the electromagnet, thereby causing the movable plate to vibrate. The frequency of the alternating current is adjusted by the frequency converter to achieve the effect of adjusting the vibration frequency. The position of the connecting plate is adjusted by the limit piston to limit the maximum downward displacement of the movable plate, thereby controlling the vibration amplitude of the movable plate.

[0017] 2. The utility model is provided with a spherical joint, which is annularly installed on the outer edge of the top surface of the base plate with the center of the base plate as the reference. The telescopic rod is movably connected to the base plate through the spherical joint. The telescopic rod is in an inclined state. The spherical joint is also fixedly installed on the top of the telescopic rod. The movable plate is movably connected to the telescopic rod through the spherical joint at the top of the telescopic rod. This connection method enables the movable plate to produce an inclination angle of any angle. The electromagnet is symmetrically installed on the top of the raising frame front and back and left and right with the center of the raising frame as the reference. The electromagnets at different positions are controlled to be connected to the circuit by turning on and off the circuit breaker, so that the vibration center of the movable plate deviates from the center of the movable plate, causing the movable plate to produce an inclination angle when vibrating, thereby improving the simulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the telescopic rod of the utility model;

[0020] Figure 3 This is a schematic diagram of the electromagnet installation structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the permanent magnet installation structure of the utility model;

[0022] Among them: 1. Base plate; 11. Controller; 12. Frequency converter; 13. Inverter; 14. Circuit breaker; 15. Ball joint; 16. Telescopic rod; 17. Return spring; 18. Heightening frame; 19. Electromagnet; 110. Limit piston; 111. Connecting plate; 112. Rubber pad; 113. Movable plate; 114. Permanent magnet. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional 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 direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] See also Figure 1 - Figure 4 In this embodiment, a vibration simulation platform for shockproof detection includes: a base plate 1, a controller 11, a frequency converter 12, an inverter 13, and a circuit breaker 14 are fixedly installed on the top of the base plate 1, a spherical joint 15 is fixedly installed on the top of the base plate 1, a telescopic rod 16 is fixedly installed on the top of the spherical joint 15, a return spring 17 is inserted through the outside of the telescopic rod 16, a raising frame 18 is fixedly installed on the top of the base plate 1, an electromagnet 19 is fixedly installed on the top of the raising frame 18, a limit piston 110 is fixedly installed at the center of the base plate 1, a connecting plate 111 is fixedly installed on the upper end of the limit piston 110, a rubber pad 112 is fixedly installed above the connecting plate 111, a movable plate 113 is movably installed on the upper end of the telescopic rod 16, and a permanent magnet 114 is fixedly installed below the movable plate 113.

[0027] The base plate 1 is circular, and the spherical joint 15 is annularly installed on the outer edge of the top surface of the base plate 1 with the center of the base plate 1 as the reference. The telescopic rod 16 is movably connected to the base plate 1 through the spherical joint 15. The telescopic rod 16 is in an inclined state. The spherical joint 15 is also fixedly installed on the top of the telescopic rod 16. The movable plate 113 is movably connected to the telescopic rod 16 through the spherical joint 15 at the top of the telescopic rod 16. The upper and lower ends of the return spring 17 are respectively fixedly connected to the spherical joints 15 at the upper and lower ends of the telescopic rod 16. The electromagnet 19 is symmetrically installed on the top of the raising frame 18 front and back and left and right with the center of the raising frame 18 as the reference. The connecting plate 111 is movably connected to the base plate 1 through the limit piston 110. The center of the bottom surface of the movable plate 113 is also fixedly installed with a rubber pad 112. The permanent magnet 114 is symmetrically installed on the bottom surface of the movable plate 113 front and back and left and right with the center of the movable plate 113 as the reference, and the installation position of the permanent magnet 114 matches the installation position of the electromagnet 19.

[0028] Specifically, the base plate 1 can limit the position of the bottom end of the telescopic rod 16, the controller 11 can control the extension of the limit piston 110, the frequency converter 12 can change the frequency of the alternating current, the inverter 13 can convert the direct current into alternating current, the circuit breaker 14 can control whether the electromagnet 19 is connected to the circuit, the spherical joint 15 can facilitate the rotation of the telescopic rod 16, the telescopic rod 16 can facilitate the position change of the movable plate 113, the reset spring 17 can facilitate the reset of the movable plate 113, the raising frame 18 can shorten the distance between the electromagnet 19 and the permanent magnet 114, and the electromagnet After alternating current is applied to 19, the polarity will change periodically with the frequency of the alternating current, achieving the effect of periodically adsorbing and repelling the permanent magnet 114. The limiting piston 110 can adjust the distance between the connecting plate 111 and the movable plate 113. The connecting plate 111 can limit the position of the rubber pad 112. The rubber pad 112 can absorb part of the force applied to the connecting plate 111 when the movable plate 113 moves downward. The movable plate 113 can support the equipment being tested. The permanent magnet 114 can cause the movable plate 113 to change position under the attraction or repulsion of the electromagnet 19.

[0029] During use, direct current is converted into alternating current through the inverter 13, and the frequency of the alternating current is adjusted by the frequency converter 12 before being passed into the electromagnet 19. The polarity of the magnetic force generated by the electromagnet 19 after the alternating current is passed will change periodically with the frequency of the alternating current, thereby causing the electromagnet 19 to periodically attract and repel the permanent magnet 114. The permanent magnet 114 will drive the movable plate 113 to move downward when it is attracted by the electromagnet 19, and will drive the movable plate 113 to move upward when it is repelled by the electromagnet 19, thereby causing the movable plate 113 to vibrate, thereby achieving the effect of adjusting the vibration frequency. The position of the connecting plate 111 is adjusted by the limit piston 110 to limit the maximum value of the downward displacement of the movable plate 113 to control the vibration amplitude of the movable plate 113. The spherical joint 15 is based on the center of the base plate 1 The quasi-annular shape is installed on the outer edge of the top surface of the base plate 1, and the telescopic rod 16 is movably connected to the base plate 1 through the spherical joint 15. The telescopic rod 16 is in an inclined state, and the spherical joint 15 is also fixedly installed on the top of the telescopic rod 16. The movable plate 113 is movably connected to the telescopic rod 16 through the spherical joint 15 at the top of the telescopic rod 16. This connection method enables the movable plate 113 to have an inclination angle of any angle. The electromagnet 19 is symmetrically installed on the top of the raising frame 18 front and back and left and right with the center of the raising frame 18 as the reference. The circuit is controlled by the circuit breaker 14 to control the on and off of the circuit to control the electromagnets 19 at different positions to connect to the circuit, so that the vibration center of the movable plate 113 deviates from the center of the movable plate 113, so that the movable plate 113 has an inclination angle when vibrating, thereby improving the simulation effect.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibration simulation platform for earthquake protection detection, characterized in that: include: A base plate (1), a controller (11), a frequency converter (12), an inverter (13), and a circuit breaker (14) are fixedly installed above the base plate (1); a spherical joint (15) is fixedly installed above the base plate (1); a telescopic rod (16) is fixedly installed above the spherical joint (15); a return spring (17) is inserted and installed on the outer side of the telescopic rod (16); a heightening frame (18) is fixedly installed above the base plate (1); an electromagnet (19) is fixedly installed above the heightening frame (18); a limiting piston (110) is fixedly installed at the center of the base plate (1); a connecting plate (111) is fixedly installed on the upper end of the limiting piston (110); a rubber pad (112) is fixedly installed above the connecting plate (111); a movable plate (113) is movably installed on the upper end of the telescopic rod (16); and a permanent magnet (114) is fixedly installed below the movable plate (113).

2. A vibration simulation platform for shockproof testing according to claim 1, characterized in that: The base plate (1) is circular, and the spherical joint (15) is installed in a ring shape on the outer edge of the top surface of the base plate (1) with the center of the base plate (1) as a reference.

3. The vibration simulation platform for earthquake protection detection according to claim 1, characterized in that: The telescopic rod (16) is movably connected to the bottom plate (1) via a spherical joint (15), and the telescopic rod (16) is in an inclined state.

4. The vibration simulation platform for shockproof testing according to claim 1, characterized in that: The spherical joint (15) is also fixedly mounted on the top end of the telescopic rod (16), and the movable plate (113) is movably connected to the telescopic rod (16) through the spherical joint (15) at the top end of the telescopic rod (16).

5. The vibration simulation platform for shockproof testing according to claim 1, characterized in that: The upper and lower ends of the return spring (17) are fixedly connected to the spherical joints (15) at the upper and lower ends of the telescopic rod (16), respectively. The electromagnet (19) is symmetrically installed on the top of the raising frame (18) with the center of the raising frame (18) as the reference.

6. The vibration simulation platform for earthquake protection detection according to claim 1, characterized in that: The connecting plate (111) is movably connected to the bottom plate (1) via the limiting piston (110), and a rubber pad (112) is also fixedly mounted at the center of the bottom surface of the movable plate (113).

7. The vibration simulation platform for earthquake protection detection according to claim 1, characterized in that: The permanent magnet (114) is installed on the bottom surface of the movable plate (113) symmetrically in front and back and left and right directions with the center of the movable plate (113) as a reference, and the installation position of the permanent magnet (114) matches the installation position of the electromagnet (19).

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