An extension table for an electric vibration test bed

Abstract

The utility model discloses an extension platform of electric vibration test bench, apply in vibration test bench technical field, and its technical scheme main points are: including vibration table and the extension platform of external connection in the vibration table four around, vibration table side end has been set up the slot along the horizontal direction, the extension platform side end protruding connection has inserted the plug -in block in the slot, the vibration table is fixedly connected with the support component for supporting the extension platform in the bottom of extension platform, and the vibration table is equipped with the compression assembly for generating the negative pressure in the slot to compress the plug -in block tightly in the slot, and the technical effect that has is: simple structure, and the connection is stable.

Description

Technical Field

[0001] This utility model relates to the field of vibration test bench technology, and in particular to an extension platform for an electric vibration test bench. Background Technology

[0002] As a mechanical environment testing device, the electric vibration table is mainly used to verify the quality of products under mechanical environment. With the continuous improvement of people's requirements for product quality, the electric vibration table has been widely used in various fields such as national defense, aviation, aerospace, communications, electronics, automobiles, and home appliances.

[0003] During vibration testing, the bearing area of ​​the moving coil stage in conventional electric vibration testing systems is relatively small. For some large test workpieces, it is very inconvenient to install and fix them directly on the moving coil stage. Therefore, an extension stage is usually set on the moving coil stage during vibration testing. However, the existing extension stage and the moving coil stage cannot be tightly connected, which causes relative shaking between the extension stage and the moving coil stage during high-frequency vibration, thus affecting the vibration test results. Therefore, improvement is necessary. Utility Model Content

[0004] The purpose of this invention is to provide an extension platform for an electric vibration test bench, which has the advantages of simple structure and stable connection.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an extension platform for an electric vibration test bench, comprising a vibration table and an extension platform externally connected to the periphery of the vibration table; a slot is provided on the side end of the vibration table along the horizontal direction, and a plug is protruding from the side end of the extension platform and inserted into the slot; a support assembly for supporting the extension platform is fixedly connected to the bottom of the vibration table; and a clamping assembly is provided inside the vibration table for generating negative pressure in the slot to tightly press the plug into the slot.

[0006] The present invention is further configured such that: the pressing assembly includes a vacuum chamber opened in the vibration table and a vacuum suction tube fixedly connected to the vacuum chamber, a switch valve is fixedly connected to the vacuum suction tube, and a plurality of vacuum adsorption holes communicating with the vacuum chamber are evenly opened in the slot.

[0007] The present invention is further configured such that a sealing gasket is fixedly connected to the end face of the insert block that contacts the slot.

[0008] The present invention is further configured such that both the insert and the slot are triangular in shape, the angle A1 between the upper contact surface of the insert and the vertical direction is between 45° and 60°, and the angle A2 between the lower contact surface of the insert and the vertical direction is between 30° and 45°.

[0009] The present invention is further configured such that: the support assembly includes a plurality of threaded grooves opened along the inclined direction on the vibration table and a threaded support rod rotatably connected in the threaded grooves; the top end of the threaded support rod is movably connected to a support plate for abutting against the expansion table; and the end of the threaded support rod away from the support plate is fixedly connected to a rotating block for driving the threaded support rod to rotate.

[0010] The present invention is further configured such that: the threaded groove is provided in 3 sets in the vertical plane, and the angle between the center line of the threaded groove and the vertical direction is 30°, 45° or 60°.

[0011] The present invention is further configured such that a rubber buffer pad is fixedly connected to the abutting end face of the support plate.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. The clamping assembly utilizes a vacuum chamber within the vibration table and several vacuum adsorption holes connected to the vacuum chamber within the slot. By evacuating the vacuum chamber, the air pressure outside the insert is greater than the air pressure inside the slot. The external air pressure presses the insert firmly into the slot from the outside in, thus improving the stability of the expansion stage when inserted into the slot. Furthermore, both the insert and the slot are triangular in shape. The air pressure acting on the upper and lower contact surfaces of the insert is divided into a horizontal component perpendicular to the side of the vibration table and a vertical component along the vertical direction. The vertical component causes the insert to adhere to the slot surface, ensuring a tight fit between the insert and the slot even during vibration, significantly improving the stability of the expansion stage. Since air pressure is used to press the expansion stage onto the vibration table, the high-frequency vibration of the vibration table does not affect the air pressure, further guaranteeing the stability of the expansion stage.

[0014] 2. The support assembly is constructed by creating a threaded groove on the vibration table and installing a threaded support rod within the groove. A support plate is placed at the top of the threaded support rod. By rotating the threaded support rod, the support plate abuts against the bottom surface of the expansion table, thus supporting the expansion table. The threaded support rod can be used in conjunction with threaded grooves of different inclination angles to support expansion tables of different areas, or multiple sets of threaded support rods can be used to support the expansion table, ensuring the support effect of the expansion table. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the overall structure of this embodiment;

[0016] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0017] Reference numerals: 1. Vibration table; 2. Extension table; 3. Slot; 4. Insert block; 5. Support assembly; 51. Threaded groove; 52. Threaded support rod; 53. Support plate; 54. Rotating block; 56. Rubber buffer pad; 6. Clamping assembly; 61. Vacuum chamber; 62. Vacuum suction tube; 63. Switch valve; 64. Vacuum suction hole; 65. Sealing gasket. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example:

[0020] refer to Figures 1 to 2 An extension platform for an electric vibration test bench includes a vibration table 1 and extension platforms 2 externally connected around the vibration table 1. A slot 3 is provided on the side of the vibration table 1 along the horizontal direction. A plug 4 protrudes from the side of the extension platform 2 and is inserted into the slot 3. The extension platform 2 is installed on the vibration table 1 by inserting the plug 4 into the slot 3. Up to four extension platforms 2 can be installed on the vibration table 1 at the same time. A support component 5 for supporting the extension platform 2 is fixedly connected to the bottom of the vibration table 1. A clamping component 6 is provided inside the vibration table 1 to generate negative pressure in the slot 3 to press the plug 4 tightly into the slot 3. The support component 5 and the clamping component 6 are used to stably install the extension platform 2 on the vibration table 1 and prevent relative movement between the vibration table 1 and the extension platform 2 during vibration.

[0021] refer to Figures 1 to 2Specifically, the clamping assembly 6 includes a vacuum chamber 61 formed within the vibration table 1 and a vacuum suction tube 62 fixedly connected to the vacuum chamber. A switching valve 63 for sealing the vacuum chamber 61 is fixedly connected to the vacuum suction tube 62. Several vacuum adsorption holes 64 communicating with the vacuum chamber 61 are evenly formed within the slot 3. A sealing gasket 65 is fixedly connected to the end face of the insert 4 that contacts the slot 3 to improve the sealing between the insert 4 and the slot 3. Both the insert 4 and the slot 3 have a triangular structure. The angle A1 between the upper contact surface of the insert 4 and the vertical direction is between 45-60°, and the angle A2 between the lower contact surface of the insert 4 and the vertical direction is between 30-45°. By evacuating the vacuum chamber 61, the air outside the insert 4... The external air pressure, greater than the air pressure inside slot 3, presses the insert 4 firmly into slot 3 from the outside in, thus improving the stability of the expansion stage 2 when inserted into slot 3. Both the insert 4 and slot 3 are triangular in shape. The air pressure acting on the upper and lower contact surfaces of the insert 4 consists of a horizontal component perpendicular to the side of the vibration table 1 and a vertical component. The vertical component causes the insert 4 to adhere to the surface of slot 3, ensuring a tight fit between the insert 4 and slot 3 even when the vibration table 1 vibrates. This significantly improves the stability of the expansion stage 2. Furthermore, since air pressure is used to press the expansion stage 2 firmly onto the vibration table 1, the high-frequency vibration of the vibration table 1 does not affect the air pressure, further ensuring the stability of the expansion stage 2. In this embodiment, the sealing gasket 65 is a silicone gasket.

[0022] refer to Figure 1 Specifically, the support assembly 5 includes several threaded grooves 51 opened along the inclined direction on the vibration table 1 and threaded support rods 52 rotatably connected in the threaded grooves 51. A support plate 53 for abutting against the extension table 2 is movably connected to the top of the threaded support rod 52. A rotating block 54 for driving the threaded support rod 52 to rotate is fixedly connected to the end of the threaded support rod 52 away from the support plate 53. There are 3 sets of threaded grooves 51 in the vertical plane. The angle between the center line of the threaded groove 51 and the vertical direction is 30°, 45° or 60°. By rotating the threaded support rod 52, the support plate 53 abuts against the bottom surface of the extension table 2, thereby supporting the extension table 2. By cooperating with the threaded grooves 51 with different inclination angles, the extension table 2 of different areas can be supported, or the extension table 2 can be supported by multiple sets of threaded support rods 52, thus ensuring the support effect of the extension table 2. A rubber buffer pad 56 is fixedly connected to the abutting end face of the support plate 53 to ensure the fit between the support plate 53 and the extension platform 2, and to avoid relative vibration between the extension platform 2 and the support block due to gaps.

[0023] Brief description of the usage process: First, insert the plug 4 into the slot 3 to install the expansion stage 2 onto the vibration table 1. Then, evacuate the vacuum chamber 61. At this time, the air pressure outside the plug 4 is greater than the air pressure inside the slot 3. The external air pressure presses the plug 4 into the slot 3 from the outside in, thereby improving the stability of the expansion stage 2 inserted into the slot 3. Finally, rotate the threaded support rod 52 so that the support plate 53 abuts against the bottom surface of the expansion stage 2, thereby supporting the expansion stage 2.

[0024] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that make creative contributions as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An extension stage for an electric vibration test bench, comprising a vibration table (1) and an extension stage (2) externally connected to the periphery of the vibration table (1); characterized in that, The vibration table (1) has a slot (3) on its side along the horizontal direction. The extension table (2) has a protruding plug (4) that is inserted into the slot (3). The vibration table (1) has a support assembly (5) for supporting the extension table (2) fixedly connected to the bottom of the extension table (2). The vibration table (1) has a clamping assembly (6) for generating negative pressure in the slot (3) to tightly press the plug (4) in the slot (3).

2. The extension stage of an electric vibration test bench according to claim 1, characterized in that, The pressing assembly (6) includes a vacuum chamber (61) opened in the vibration table (1) and a vacuum suction tube (62) fixedly connected to the vacuum chamber. A switch valve (63) is fixedly connected to the vacuum suction tube (62). A plurality of vacuum adsorption holes (64) communicating with the vacuum chamber (61) are evenly opened in the slot (3).

3. An extension table for an electric vibration test table according to claim 2, characterized in that A sealing gasket (65) is fixedly connected to the end face of the insert (4) that contacts the slot (3).

4. An extension table for an electric vibration test table according to claim 2, characterized in that Both the insert (4) and the slot (3) are triangular in shape. The angle A1 between the upper contact surface of the insert (4) and the vertical direction is between 45° and 60°, and the angle A2 between the lower contact surface of the insert (4) and the vertical direction is between 30° and 45°.

5. An extension table for an electric vibration test table according to claim 1, characterized in that The support assembly (5) includes several threaded grooves (51) opened along the inclined direction on the vibration table (1) and a threaded support rod (52) rotatably connected in the threaded grooves (51). The top end of the threaded support rod (52) is movably connected to a support plate (53) for abutting against the extension table (2). The end of the threaded support rod (52) away from the support plate (53) is fixedly connected to a rotating block (54) for driving the threaded support rod (52) to rotate.

6. An extension table for an electric vibration test table according to claim 5, characterized in that The threaded groove (51) is provided in 3 sets in the vertical plane, and the angle between the center line of the threaded groove (51) and the vertical direction is 30°, 45° or 60°.

7. The extension stage of an electric vibration test bench according to claim 5, characterized in that, The support plate (53) is fixedly connected to a rubber buffer pad (56) at its abutting end.

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