Multidirectional expansion platform and vibration test bench

Abstract

The present application discloses a multidirectional expansion platform and a vibration test bench. The multidirectional expansion platform comprises a support table, a plurality of support legs extending downwards from one side of the support table, two guide rails provided on each support leg and extending in the vertical direction, an upper mounting table mounted on the support table, and a plurality of side mounting tables mounted on every two adjacent support legs; the two guide rails on each support leg have different orientations; each guide rail and the guide rails on the support leg adjacent thereto are located on the same plane; and the side mounting tables are fixedly connected to the upper mounting table. According to the multidirectional expansion platform and the vibration test bench of the present application, the upper mounting table and the plurality of side mounting tables are provided, so that multidirectional and batch vibration testing of test pieces can be realized; the structure is compact, the occupied space is small, and the costs are low.

Description

Multi-directional expansion platform and vibration test bench

[0001] This application is based on the Chinese patent application with application number CN202311094405.1 and application date of August 29, 2023, and claims the priority of the Chinese patent application. The entire content of the above patent application is hereby introduced into this application as a reference. Technical Field

[0002] The present application relates to a multi-directional expansion platform and a vibration test bench. Background Art

[0003] Nowadays, domestic and foreign uniaxial vibration tables with single-direction work surfaces can only meet the unidirectional vibration testing of small specimens and small batches or single large specimens. If you want to expand the test in other directions, you must either configure a vibration table in other directions or install a cube fixture on the work surface of the original vibration table. This increases the equipment manufacturing cost and reduces the vibration transmission response. At the same time, the expansion of the vibration table requires additional space, and adding a cube fixture increases the overall height of the equipment, which is not the best choice.

[0004] In view of this, it is necessary to improve the existing vibration table to solve the above problems.

[0005] The reference to any prior art in the specification is not an acknowledgement or suggestion that the prior art forms part of the common general knowledge in any jurisdiction, or that it could reasonably be expected that the person skilled in the art would understand, consider relevant and / or combine with other prior art. Summary of the Invention

[0006] The purpose of this application is to provide a multi-directional expansion platform to solve the problem that existing vibration tables are difficult to perform multi-directional testing on specimens and difficult to achieve multi-batch testing.

[0007] In order to achieve one of the above-mentioned purposes of the invention, the present invention provides a multi-directional expansion platform, which includes a support table, a plurality of support legs extending downward from one side of the support table, two guide rails extending in a vertical direction on each support leg, an upper mounting table for being installed on the support table, and a plurality of side mounting tables for being installed on two adjacent support legs. The two guide rails on each support leg face different directions, and each guide rail is located in the same plane as the guide rail on the adjacent support leg, and the side mounting table is fixedly connected to the upper mounting table.

[0008] As a further improvement to the embodiment of the present application, the number of the supporting legs is four, and the number of the side mounting tables is four.

[0009] As a further improvement to the embodiment of the present application, the support leg includes two support side walls that are perpendicular to each other, and each of the support side walls is provided with a guide rail.

[0010] As a further improvement to the embodiment of the present application, a plurality of reinforcing ribs are provided between two adjacent supporting side walls, and the plurality of reinforcing ribs are arranged at intervals along the vertical direction.

[0011] As a further improvement to the embodiment of the present application, two adjacent side mounting tables are fixedly connected.

[0012] As a further improvement of the implementation mode of the present application, the multi-directional expansion platform also includes a linear bearing fixed on the support table, a guide shaft passing through the linear bearing to cooperate with the linear bearing, the guide shaft extends in a vertical direction, and the upper mounting table is fixed to the guide shaft to move up and down relative to the linear bearing.

[0013] The present application also provides a vibration test bench, which includes a hydraulic vibration table and a multi-directional expansion platform as described above. The support table is provided with a through-hole, and the hydraulic vibration table passes through the through-hole to be fixedly connected to the upper mounting table to drive the upper mounting table and the side mounting table to reciprocate in the vertical direction.

[0014] As a further improvement of the embodiment of the present application, the hydraulic vibration table includes a hydraulic vibration exciter fixed to the upper mounting table and a servo valve for controlling the operation of the hydraulic vibration exciter.

[0015] As a further improvement of the embodiment of the present application, the hydraulic vibration table also includes a displacement sensor for detecting the moving distance of the hydraulic exciter.

[0016] As a further improvement of the embodiment of the present application, the vibration test platform also includes a fixed base, which is fixedly connected to the multiple support legs. The hydraulic vibration platform also includes an exciter mounting base fixed on the fixed base, and the hydraulic exciter is arranged on the exciter mounting base.

[0017] Compared with the prior art, the beneficial effect of the present application is that the multi-directional expansion platform and vibration test bench of the present invention can realize multi-directional and batch vibration testing of test pieces by setting an upper mounting table and multiple side mounting tables, and has a compact structure, occupies less space, and has low cost.

[0018] As used herein, the term "comprise" and variations of the term, such as "comprises," "comprised," "comprising," "including," and "containing" do not exclude other features, components, elements, or steps unless the context clearly requires otherwise. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of the three-dimensional structure of the vibration test bench of the present application;

[0020] FIG2 is a schematic diagram of the exploded structure of the vibration test bench of the present application;

[0021] FIG3 is a schematic diagram of the three-dimensional structure of the hydraulic vibration table of the vibration test table of the present application;

[0022] FIG4 is a schematic diagram of the three-dimensional structure of the hydraulic vibration table, fixed base, and multi-directional expansion platform of the vibration test bench of the present application without the side mounting table;

[0023] FIG5 is a schematic diagram of the three-dimensional structure of the hydraulic vibration table, fixed base, and multi-directional expansion platform of the vibration test bench of the present application, excluding the side mounting table and the upper mounting platform;

[0024] FIG6 is a schematic diagram of the three-dimensional structure of the multi-directional expansion platform of the present application without the side mounting table and the upper mounting platform. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] 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.

[0028] As shown in Figures 1 to 6, the vibration test bench 100 of the present invention includes a hydraulic vibration table 1, a multi-directional expansion platform 2, and a fixed base 3. The hydraulic vibration table 1 and the multi-directional expansion platform 2 are both fixed to the fixed base 3, and the fixed base 3 can be used to fix to an external foundation.

[0029] The hydraulic vibration table 1 includes a hydraulic vibrator 11 , a servo valve 12 for controlling the operation of the hydraulic vibrator 11 , a displacement sensor 13 for detecting the moving distance of the hydraulic vibrator 11 , and a vibrator mounting base 14 .

[0030] As shown in Figure 3, the exciter mounting base 14 is positioned below the hydraulic exciter 11. The servo valve 12 is mounted on the side wall of the hydraulic exciter 11. The displacement sensor 13 is also mounted on the hydraulic exciter 11 to facilitate detection of the vibration amplitude and frequency of the hydraulic exciter 11. The hydraulic exciter 11 is driven by power provided by an external high-pressure oil source. The servo valve 12 receives a control signal to switch, allowing the hydraulic exciter 11 to reciprocate. The displacement sensor 13 simultaneously detects displacement and feeds it back to an external controller, implementing dual closed-loop regulation and control.

[0031] As shown in Figures 4 to 6, the multi-directional expansion platform 2 includes a support table 21, a linear bearing 22 fixed on the support table 21, a guide shaft 23 passing through the linear bearing 22 to cooperate with the linear bearing 22, a plurality of support legs 24 extending downward from one side of the support table 21, two guide rails 25 extending in a vertical direction on each support leg 24, an upper mounting table 26 for mounting on the support table 21, and a plurality of side mounting tables 27 for mounting on two adjacent support legs 24.

[0032] The hydraulic vibrator 11 is used to connect to the upper mounting table 26 .

[0033] The guide shaft 23 extends vertically, and the upper mounting table 26 is fixed to the guide shaft 23 for vertical movement relative to the linear bearing 22. The guide shaft 23 serves as a guide. In this embodiment, four guide shafts 23 and four linear bearings 22 are positioned at the four corners of the support table 21 to enhance stability and the upper mounting table 26's ability to resist overturning moments, while also preventing deformation.

[0034] The support table 21 is provided with a through hole 211 for the hydraulic vibrator 11 to pass through and be fixedly connected to the upper mounting table 26. The through hole 211 is provided in the middle of the even-numbered support table 21.

[0035] The fixed base 3 is fixedly connected to the plurality of support legs 24 .

[0036] The two guide rails 25 on each support leg 24 face different directions, and each guide rail 25 is located in the same plane as the guide rail 25 on the adjacent support leg 24. The side mounting platform 27 can reciprocate along the guide rails 25 in the vertical direction.

[0037] In this embodiment, there are four support legs 24 and four side mounting platforms 27. In other embodiments, there may be three support legs 24 or more than four, and the number of corresponding side mounting platforms 27 may also vary accordingly.

[0038] In this embodiment, the support leg 24 includes two mutually perpendicular support side walls 241, each of which is provided with a guide rail 25. The guide rail 25 is provided with a sliding block 251, which is fixedly connected to the side mounting table 27. The sliding block 251 cooperates with the guide rail 25 to drive the side mounting table 27 to slide along the guide rail 25.

[0039] A plurality of reinforcing ribs 242 are provided between two adjacent supporting side walls 241. The plurality of reinforcing ribs 242 are spaced apart in the vertical direction. The reinforcing ribs 242 serve to strengthen the supporting side walls 241, thereby increasing the overall strength and meeting the requirements of vibration testing.

[0040] Two adjacent side mounting surfaces 27 are fixedly connected. The side mounting surfaces 27 are fixedly connected to the upper mounting surface 26. When the hydraulic vibration table 1 drives the upper mounting surface 26 to reciprocate vertically, it also drives the side mounting surfaces 27 to reciprocate vertically, achieving overall up-and-down vibration. Both the upper mounting surface 26 and the side mounting surfaces 27 can be mounted with specimens, enabling multi-directional vibration testing of similar specimens and batch vibration testing of similar small specimens. This improves testing efficiency and maintains a compact structure.

[0041] The multi-directional expansion platform 2 and the vibration test bench 100 of the present invention can realize multi-directional and batch vibration testing of test pieces by providing an upper mounting table 26 and multiple side mounting tables 27, and have a compact structure, occupy less space, and have low cost.

[0042] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A multi-directional expansion platform, characterized by: The multi-directional expansion platform includes a supporting table, a plurality of supporting legs extending downward from one side of the supporting table, two guide rails extending in a vertical direction on each supporting leg, an upper mounting table for being installed on the supporting table, and a plurality of side mounting tables for being installed on two adjacent supporting legs. The two guide rails on each supporting leg face different directions, and each guide rail is located in the same plane as the guide rail on the adjacent supporting leg, and the side mounting table is fixedly connected to the upper mounting table.

2. The multi-directional expansion platform according to claim 1, characterized in that: The number of the supporting legs is four, and the number of the side mounting tables is four.

3. The multi-directional expansion platform according to claim 2, characterized in that: The support leg comprises two support side walls which are perpendicular to each other, and each of the support side walls is provided with a guide rail.

4. The multi-directional expansion platform according to claim 3, characterized in that: A plurality of reinforcing ribs are arranged between two adjacent supporting side walls, and the plurality of reinforcing ribs are arranged at intervals along the vertical direction.

5. The multi-directional expansion platform according to claim 1, characterized in that: Two adjacent side mounting tables are fixedly connected.

6. The multi-directional expansion platform according to claim 1, characterized in that: The multi-directional expansion platform also includes a linear bearing fixed on the support table, a guide shaft passing through the linear bearing to cooperate with the linear bearing, the guide shaft extends in a vertical direction, and the upper mounting table is fixed to the guide shaft to move up and down relative to the linear bearing.

7. A vibration test bench, characterized in that: The vibration test bench includes a hydraulic vibration table and a multi-directional expansion platform as described in any one of claims 1 to 6. The support table is provided with a through hole. The hydraulic vibration table passes through the through hole to be fixedly connected with the upper mounting table to drive the upper mounting table and the side mounting table to reciprocate in the vertical direction.

8. The vibration test bench according to claim 7, characterized in that: The hydraulic vibration table comprises a hydraulic vibration exciter fixed to the upper mounting table surface and a servo valve for controlling the operation of the hydraulic vibration exciter.

9. The vibration test bench according to claim 8, characterized in that: The hydraulic vibration table also includes a displacement sensor for detecting the moving distance of the hydraulic exciter.

10. The vibration test bench according to claim 8, characterized in that: The vibration test bench also includes a fixed base, which is fixedly connected to the plurality of support legs. The hydraulic vibration bench also includes a vibration exciter mounting base fixed on the fixed base, and the hydraulic vibration exciter is arranged on the vibration exciter mounting base.

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