Multi-directional expansion platform and vibration test bench

Abstract

The present invention provides a multi-directional expansion platform and a vibration test bench, the multi-directional expansion platform comprising 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 mounting on the support table, and a plurality of side mounting tables for mounting on two adjacent support legs, the two guide rails on each support leg facing in different directions, and each guide rail is located in the same plane as the guide rails on the adjacent support legs, and the side mounting table is fixedly connected to the upper mounting table. The multi-directional expansion platform and the vibration test bench of the present invention can realize multi-directional and batch vibration testing of test pieces by providing an upper mounting table and a plurality of side mounting tables, and have a compact structure, occupy less space, and have a low cost.

Description

Technical Field

[0001] The invention relates to a multi-directional expansion platform and a vibration test bench. Background Art

[0002] Nowadays, uniaxial vibration tables at home and abroad with a single-direction work surface can only meet the unidirectional vibration test of small specimens and small batches or a single large specimen. If you want to expand the test in other directions, you must either configure a vibration table in other directions, or install a cubic fixture on the work surface of the original vibration table. This not only increases the equipment manufacturing cost, but also reduces the vibration transmission response. At the same time, the expansion of the vibration table requires additional space, and adding a cubic fixture increases the overall height of the equipment, which is not the best choice.

[0003] In view of this, it is necessary to improve the existing vibration table to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-directional expansion platform to solve the problem that the existing vibration table is difficult to perform multi-directional testing on the test piece and difficult to achieve multi-batch testing.

[0005] To achieve the above-mentioned objectives, the present invention provides a multi-directional expansion platform, which 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 facing different directions, and each guide rail and the guide rail on the adjacent supporting leg are located in the same plane, and the side mounting table is fixedly connected to the upper mounting table.

[0006] As a further improvement of the present invention, the number of the supporting legs is four, and the number of the side mounting tables is four.

[0007] As a further improvement of the present invention, 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.

[0008] As a further improvement of the present invention, 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.

[0009] As a further improvement of the present invention, two adjacent side mounting tables are fixedly connected.

[0010] As a further improvement of the present invention, 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.

[0011] The present invention also provides a vibration test bench, which includes a hydraulic vibration table and a multi-directional expansion platform as described above. The support table top is provided with a through hole, and the hydraulic vibration table passes through the through hole to be fixedly connected with the upper mounting table top to drive the upper mounting table top and the side mounting table top to reciprocate in the vertical direction.

[0012] As a further improvement of the present invention, the hydraulic vibration table includes a hydraulic vibration exciter fixed to the upper mounting table surface and a servo valve for controlling the operation of the hydraulic vibration exciter.

[0013] As a further improvement of the present invention, the hydraulic vibration table also includes a displacement sensor for detecting the moving distance of the hydraulic exciter.

[0014] As a further improvement of the present invention, the vibration test platform also includes a fixed base, which is fixedly connected to the plurality of 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.

[0015] The beneficial effects of the present invention are as follows: 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 have a compact structure, occupy a small space, and have a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the vibration test bench of the present invention;

[0017] Figure 2 It is a schematic diagram of the exploded structure of the vibration test bench of the present invention;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of a hydraulic vibration table of the vibration test table of the present invention;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of a hydraulic vibration table, a fixed base, and a multi-directional expansion platform excluding a side mounting tabletop of the vibration test table of the present invention;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of a hydraulic vibration table, a fixed base, and a multi-directional expansion platform excluding a side mounting table and an upper mounting platform of the vibration test table of the present invention;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the multi-directional expansion platform of the present invention that does not include the side mounting table and the upper mounting platform. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] 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 the internal connection of 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.

[0025] like Figures 1 to 6 As shown, the vibration test bench 100 of the present invention comprises 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 on the fixed base 3, and the fixed base 3 can be used to be fixed to an external foundation.

[0026] The hydraulic vibration table 1 includes a hydraulic vibration exciter 11 , a servo valve 12 for controlling the operation of the hydraulic vibration exciter 11 , a displacement sensor 13 for detecting the moving distance of the hydraulic vibration exciter 11 , and a vibration exciter mounting base 14 .

[0027] like Figure 3As shown, the vibration exciter mounting base 14 is arranged below the hydraulic vibration exciter 11, the servo valve 12 is mounted on the side wall of the hydraulic vibration exciter 11, and the displacement sensor 13 is also mounted on the hydraulic vibration exciter 11, so as to facilitate the detection of the vibration amplitude and frequency of the hydraulic vibration exciter 11. The hydraulic vibration exciter 11 can move by the power provided by the external high-pressure oil source, the servo valve 12 receives the control signal to switch, so that the hydraulic vibration exciter 11 can reciprocate, and the displacement sensor 13 simultaneously detects the displacement and feeds it back to the external controller for double closed-loop regulation and control.

[0028] like Figures 4 to 6 As shown, 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.

[0029] The hydraulic vibrator 11 is used to be connected to the upper mounting table 26 .

[0030] The guide shaft 23 extends in the vertical direction, and the upper mounting table 26 is fixed to the guide shaft 23 so as to move up and down relative to the linear bearing 22. The guide shaft 23 can play a guiding role. In this embodiment, the number of the guide shafts 23 and the linear bearings 22 is four, which are arranged at the four corners of the support table 21 to improve the stability and the anti-overturning moment capability of the upper mounting table 26, and at the same time make the upper mounting table 26 not easily deformed.

[0031] 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 arranged in the middle of the even-numbered support table 21.

[0032] The fixed base 3 is fixedly connected to the plurality of supporting legs 24 .

[0033] 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 table 27 can reciprocate along the guide rail 25 in the vertical direction.

[0034] In this embodiment, there are four supporting legs 24 and four side mounting tables 27. In other embodiments, there may be three supporting legs 24 or more than four, and the number of the corresponding side mounting tables 27 may also vary accordingly.

[0035] In this embodiment, the support leg 24 includes two mutually perpendicular support side walls 241, and each of the support side walls 241 is provided with a guide rail 25. The guide rail 25 is provided with a sliding block 251, and the sliding block 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 be slidably arranged along the guide rail 25.

[0036] A plurality of reinforcing ribs 242 are provided between two adjacent supporting side walls 241, and the plurality of reinforcing ribs 242 are arranged at intervals in the vertical direction. The reinforcing ribs 242 play the role of reinforcing the strength of the supporting side walls 241. The overall strength can be improved to meet the vibration test.

[0037] The two adjacent side mounting tables 27 are fixedly connected. The side mounting table 27 is fixedly connected to the upper mounting table 26. When the hydraulic vibration table 1 drives the upper mounting table 26 to reciprocate in the vertical direction, it also drives the side mounting table 27 to reciprocate in the vertical direction to achieve overall up and down vibration. Both the upper mounting table 26 and the side mounting table 27 can be installed with test pieces to meet the multi-directional vibration test of similar test pieces, and can also meet the batch vibration test of similar small test pieces, providing test efficiency and compact table structure.

[0038] 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 a plurality of side mounting tables 27, and have a compact structure, occupy a small space, and have a low cost.

[0039] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0040] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A multi-directional expansion platform, characterized by: The multi-directional expansion platform 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 mounting on the support table, a plurality of side mounting tables for mounting on two adjacent support legs, a linear bearing fixed on the support table, and a guide shaft passing through the linear bearing to cooperate with the linear bearing. The two guide rails on each of the support legs face different directions, and each guide rail is located in the same plane as the guide rail on the adjacent support leg. The side mounting table is fixedly connected to the upper mounting table, the guide shaft extends in a vertical direction, and the upper mounting table is fixed to the guide shaft so as to move up and down relative to the linear bearing. The number of the support legs is four, and the number of the side mounting tables is four.

2. The multi-directional expansion platform according to claim 1, 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.

3. The multi-directional expansion platform according to claim 2, 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.

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

5. 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 4. 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.

6. The vibration test bench according to claim 5, 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.

7. The vibration test bench according to claim 6, characterized in that: The hydraulic vibration table also includes a displacement sensor for detecting the moving distance of the hydraulic exciter.

8. The vibration test bench according to claim 6, 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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