Base vibration isolation mechanism for electric vibration test bench

Abstract

The utility model relates to the technical field of vibration test equipment, in particular to a base vibration isolation mechanism for an electric vibration test stand, which comprises a vibration stand main body, two groups of support frames and a support base, two sides of the vibration stand main body are symmetrically connected with the two groups of support frames, one end of each support frame is in bolted connection with the support base, and one end of each support base is fixedly connected with a vibration isolation assembly. The periphery of the vibration isolation assembly is fixedly connected with four sets of sliding vibration reduction assemblies. According to the base vibration isolation mechanism for the electric vibration test bed, the vibration isolation assembly is arranged at the lower end of the supporting base, and the axial vibration of the supporting base is buffered and isolated through the elastic air cushion, the damping rod piece and the vertical damping spring on the vibration isolation assembly; the supporting base can slide up and down on the rotating sliding rod through the sliding vibration reduction assembly, slight transverse vibration can be buffered and isolated through the transverse vibration reduction spring, vibration isolation can be better conducted on the electric vibration test bed, the vibration test effect is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of vibration testing equipment technology, specifically to a base vibration isolation mechanism for an electric vibration test bench. Background Technology

[0002] An electric vibration test bench is a device used to simulate the vibration environment that a product may encounter during manufacturing, transportation and use. It is widely used in aerospace, electronics, automotive, instrumentation and other fields. It generates mechanical vibration through electromagnetic induction to test the performance and reliability of products under temperature, humidity and vibration conditions.

[0003] Chinese Patent CN218470126U discloses a noise-reducing vibration table, applicable to the field of electric vibration testing systems. The key technical features are: a noise-reducing vibration table comprising a table body and a vibration fan for driving the table body to vibrate; a vibration plate for driving the test piece to vibrate at the end of the table body away from the ground; a first noise-reducing component for absorbing noise generated by the table body to achieve initial noise reduction; and a second noise-reducing component fixedly arranged around the table body for absorbing noise not absorbed by the first noise-reducing component to further reduce noise leakage. The technical advantages are: good sound insulation and noise reduction effect, simple structure, and low operating cost.

[0004] In vibration experiments, the excitation force is transmitted to the mounting foundation through the support of the vibration table. At the same time, the vibration of the mounting foundation caused by external environmental factors will also affect the working performance of the vibration table. Therefore, corresponding vibration isolation measures must be taken. The vibration isolation methods commonly used in the above-mentioned schemes and existing technologies for electric vibration test benches are to install trunnion vibration isolation airbags on the trunnion support of the vibration table or to install vibration isolation airbags at the bottom of the vibration table base. However, the vibration isolation effect of such mechanisms is generally not good. Under high-intensity vibration testing or over time, it will still cause damage to the ground structure and affect the vibration test results. There is a lack of corresponding base vibration isolation structures with better vibration isolation effects in this area, which need to be improved and optimized. Utility Model Content

[0005] The purpose of this utility model is to provide a base vibration isolation mechanism for an electric vibration test bench, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a base vibration isolation mechanism for an electric vibration test bench includes a vibration table body, a support frame, and a support base; two sets of support frames are symmetrically connected on both sides of the vibration table body, a support base is bolted to one end of the support frame, a vibration isolation component is fixedly connected to one end of the support base, and four sets of sliding vibration damping components are fixedly connected around the vibration isolation component.

[0007] Preferably, the vibration isolation assembly includes a damping rod, a vertical damping spring, and an elastic air cushion; one end of the damping rod is fixedly connected to one end of the support base, one end of the damping rod is fixedly connected to a base plate, one end of the base plate is fixedly connected to a vertical damping spring, one end of the vertical damping spring is fixedly connected to the support base, and one end of the elastic air cushion is pressed against one end of the support base.

[0008] Preferably, the damping rod is disposed on the inner ring of the vertical vibration damping spring, and the base plate is threadedly connected with a fixing screw.

[0009] Preferably, the base plate is fixedly connected to the four sides, and a cover plate is bolted to one end of the side plate, with one end of the cover plate pressed against an elastic air cushion.

[0010] Preferably, the sliding damping assembly includes a transverse damping spring, one end of which is fixedly connected to a side plate, and the other end of which is fixedly connected to a connecting plate. Two sets of transverse damping springs are symmetrically fixedly connected to one end of the connecting plate.

[0011] Preferably, one end of the connecting plate is provided with a circular hole, a rotating shaft is rotatably inserted into the circular hole, one end of the rotating shaft is fixedly connected to a rotating slide rod, and one end of the rotating slide rod slides against one end of the support base.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The vibration isolation mechanism for an electric vibration test bench proposed in this utility model mainly involves setting a vibration isolation component at the lower end of the support base. The axial vibration of the support base is buffered and isolated by the elastic air cushion, damping rod and vertical damping spring on the vibration isolation component. The support base can slide up and down by the sliding damping component and the slight lateral vibration can be buffered and isolated by the lateral damping spring. This provides better vibration isolation for the electric vibration test bench, improves the vibration testing effect and increases the service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a base vibration isolation mechanism for an electric vibration test bench.

[0015] Figure 2 A partial cross-sectional view from a first perspective of a base vibration isolation mechanism for an electric vibration test bench;

[0016] Figure 3 A partial cross-sectional view from a second perspective of a base vibration isolation mechanism for an electric vibration test bench;

[0017] Figure 4 This is a partial anatomical view from a third-person perspective of a base vibration isolation mechanism for an electric vibration test bench.

[0018] In the diagram: Vibration table body 1, support frame 2, support base 3, damping rod 401, base plate 402, vertical damping spring 403, elastic air cushion 404, side plate 405, cover plate 406, fixing screw 407, horizontal damping spring 501, connecting plate 502, round hole 503, rotating shaft 504, rotating slide rod 505. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Please see Figures 1-4 The present invention provides the following preferred embodiments:

[0021] Example 1: A vibration isolation mechanism for an electric vibration test bench includes a vibration table body 1, a support frame 2, and a support base 3; two sets of support frames 2 are symmetrically connected to both sides of the vibration table body 1, and a support base 3 is bolted to one end of each support frame 2; a vibration isolation component is fixedly connected to one end of the support base 3, and four sets of sliding damping components are fixedly connected around the vibration isolation component; the vibration isolation component includes a damping rod 401, a vertical damping spring 403, and an elastic air cushion 404; one end of the damping rod 401 is fixedly connected to one end of the support base 3, and the damping rod... One end of 401 is fixedly connected to a base plate 402, one end of the base plate 402 is fixedly connected to a vertical damping spring 403, one end of the vertical damping spring 403 is fixedly connected to a support base 3, one end of an elastic air cushion 404 is pressed against one end of the support base 3; a damping rod 401 is set in the inner ring of the vertical damping spring 403, and a fixing screw 407 is threadedly connected to the base plate 402; side plates 405 are fixedly connected around the base plate 402, one end of the side plate 405 is bolted to a cover plate 406, and one end of the cover plate 406 is pressed against the elastic air cushion 404.

[0022] In use, the lower end of the support base 3 is fixed to one end of the damping rod 401 on the vibration isolation component, and fixedly connected to one end of the vertical damping spring 403. An elastic air cushion 404 is fixedly connected between the upper end of the support base 3 and the cover plate 406. During vibration testing, the axial vibration transmitted from the vibration table body 1 to the support base 3 is buffered and isolated by the cooperation of the damping rod 401, the vertical damping spring 403 and the elastic air cushion 404. The damping rod 401 and the vertical damping spring 403 are multiple sets and correspond one-to-one. The base plate 402 is fixedly connected to the mounting foundation by the fixing screw 407.

[0023] Example 2: Based on Example 1, the sliding damping assembly includes a transverse damping spring 501. One end of the transverse damping spring 501 is fixedly connected to the side plate 405, and the other end of the transverse damping spring 501 is fixedly connected to the connecting plate 502. Two sets of transverse damping springs 501 are symmetrically fixedly connected to one end of the connecting plate 502. One end of the connecting plate 502 is provided with a circular hole 503. A rotating shaft 504 is rotatably inserted into the circular hole 503. One end of the rotating shaft 504 is fixedly connected to a rotating slide rod 505. One end of the rotating slide rod 505 slides and presses against one end of the support base 3.

[0024] In use, when the support base 3 vibrates up and down within the vibration isolation component, the rotating slide bar 505 on the sliding damping component achieves good sliding compression with it, and the transverse damping spring 501 at one end of the connecting plate 502 buffers and isolates the slight transverse vibration of the support base 3. The sliding damping component is pressed and set around the support base 3 to achieve all-round transverse vibration isolation.

[0025] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A base vibration isolation mechanism for an electric vibration test bench, comprising a vibration table body (1), a support frame (2), and a support base (3); two sets of support frames (2) are symmetrically connected to both sides of the vibration table body (1), and a support base (3) is bolted to one end of each support frame (2), characterized in that: One end of the support base (3) is fixedly connected to a vibration isolation component, and four sets of sliding vibration damping components are fixedly connected around the vibration isolation component.

2. The base vibration isolation mechanism for an electric vibration test bench according to claim 1, characterized in that: The vibration isolation assembly includes a damping rod (401), a vertical damping spring (403), and an elastic air cushion (404); one end of the damping rod (401) is fixedly connected to one end of the support base (3), one end of the damping rod (401) is fixedly connected to a base plate (402), one end of the base plate (402) is fixedly connected to a vertical damping spring (403), one end of the vertical damping spring (403) is fixedly connected to the support base (3), and one end of the elastic air cushion (404) is pressed against one end of the support base (3).

3. The base vibration isolation mechanism for an electric vibration test bench according to claim 2, characterized in that: The damping rod (401) is disposed in the inner ring of the vertical damping spring (403), and the base plate (402) is threadedly connected to the fixing screw (407).

4. The base vibration isolation mechanism for an electric vibration test bench according to claim 2, characterized in that: The base plate (402) is fixedly connected to the four sides of the side plate (405), and a cover plate (406) is bolted to one end of the side plate (405). One end of the cover plate (406) is pressed against the elastic air cushion (404).

5. The base vibration isolation mechanism for an electric vibration test bench according to claim 1, characterized in that: The sliding damping assembly includes a transverse damping spring (501), one end of which is fixedly connected to a side plate (405), and the other end of which is fixedly connected to a connecting plate (502). Two sets of transverse damping springs (501) are symmetrically fixedly connected to one end of the connecting plate (502).

6. The base vibration isolation mechanism for an electric vibration test bench according to claim 5, characterized in that: One end of the connecting plate (502) is provided with a round hole (503), and a rotating shaft (504) is rotatably inserted into the round hole (503). One end of the rotating shaft (504) is fixedly connected to a rotating slide rod (505), and one end of the rotating slide rod (505) slides and presses against one end of the support base (3).

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