CN211347302U

CN211347302U - Triaxial vibration test device

Info

Publication number: CN211347302U
Application number: CN201922484518.8U
Authority: CN
Inventors: 邬玉刚; 朱江峰; 郑建洲; 葛鹏飞
Original assignee: Suzhou Sushi Testing Group Co Ltd
Current assignee: Suzhou Sushi Testing Group Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-25
Anticipated expiration: 2029-12-31

Abstract

A triaxial vibration test device is provided with a working table top (1), a Z-axis vibration generator (2), an X-axis vibration generator (3) and a Y-axis vibration generator (4); the method is characterized in that: the working table top (1) is arranged to the ground through a floating supporting structure; the floating support structure comprises at least three floating mechanisms (8), and each floating mechanism (8) comprises an upper support plate (81), a lower support plate (82), an air spring (83) and a plurality of guide retaining units (84). The utility model discloses specially adapted is large-scale and the heavy vibration test of quality, and the design mechanism is simple, and the reliability is high, does benefit to big batch design and manufacturing.

Description

Triaxial vibration test device

Technical Field

The utility model relates to an environmental test equipment, concretely relates to triaxial vibration test device.

Background

The conventional single-axis vibration table can only realize X, Y or Z-direction single vibration. However, with further improvement of product development process, the product performance requirement is higher and higher, and more importance is attached to the reliability verification of the product, and the conventional single-axis test cannot completely meet the vibration test requirement of the product. Compared with single axial vibration, the triaxial resonance test simulates the stress state of the product more truly, and the failure mode possibly encountered in the practical application of the product can be exposed more. Therefore, the requirement for the triaxial resonance testing device is more and more urgent.

The applicant has conducted many years of intensive studies on triaxial vibration test devices, and has already made many patents, see chinese patents CN101487765B and CN 102865987A. However, the conventional triaxial vibration testing apparatus has a working table for carrying test articles, the working table is connected to a Z-axis vibration generator through a Z-axis vibration transmission decoupling device in a Z-axis direction perpendicular to the bottom, is connected to an X-axis vibration generator through an X-axis vibration transmission decoupling device in an X-axis direction horizontal to the side, and is connected to a Y-axis vibration generator through a Y-axis vibration transmission decoupling device in a Y-axis direction horizontal to the side, and the weights of the working table and a test piece are both borne on the Z-axis vibration generator (usually an electric vibration table), and are limited to the tonnage of the Z-axis vibration table.

Disclosure of Invention

The utility model aims at providing a triaxial vibration test device to satisfy the triaxial of large-scale or heavy test piece with the experimental demand of shaking.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a triaxial vibration test device is provided with a working table top for bearing test articles, wherein the working table top is connected with a Z-axis vibration generator through a Z-axis vibration transmission decoupling device in the Z-axis direction vertical to the bottom, is connected with an X-axis vibration generator through an X-axis vibration transmission decoupling device in the X-axis direction horizontal to the side, and is connected with a Y-axis vibration generator through a Y-axis vibration transmission decoupling device in the Y-axis direction horizontal to the side; the method is characterized in that:

the working table top is arranged to the ground through a floating support structure;

the floating support structure comprises at least three floating mechanisms which are uniformly distributed below the working table surface, and each floating mechanism comprises an upper support plate, a lower support plate, an air spring and a plurality of guide retaining units; the upper supporting plate and the lower supporting plate are arranged in parallel up and down, the working table surface of the upper supporting plate is fixedly connected, the lower supporting plate is fixedly arranged relative to the ground, the air spring is arranged between the upper supporting plate and the lower supporting plate, the top of the air spring is fixedly connected with the upper supporting plate, and the bottom of the air spring is fixedly connected with the lower supporting plate; go up to set up on two at least lateral parts of backup pad circumference direction retaining unit, direction retaining unit includes guide bar, guiding hole and cylindricality rubber, the relative bottom suspension fagging fixed connection in bottom of cylindricality rubber, the top and the guide bar fixed connection of cylindricality rubber, the guide bar upwards extends in the top center of cylindricality rubber, the upper portion warp of guide bar guiding hole and last backup pad cooperation of leading.

In the above scheme, the working table is rectangular, and the number of the floating mechanisms is four, and the four floating mechanisms are respectively arranged at four corners of the working table.

Further, the upper supporting plate and the lower supporting plate are rectangular plates, the guide retaining units are arranged on two adjacent side portions of the upper supporting plate, and the side portions of the guide retaining units are arranged at the periphery of the working table, so that the guide retaining units are exposed.

Due to the adoption of the scheme, the utility model has the advantages of it is following:

the utility model discloses support table surface with special unsteady bearing structure, make the workstation personally submit the floating condition, table surface and the weight of frock and test piece on it no longer bears on Z axle vibration generator, make Z axle vibration generator just be used for providing the exciting force with X axle, Y axle vibration generator to specially adapted is large-scale and the heavy vibration test of quality.

Furthermore, the utility model discloses relocation mechanism adopts the combination of air spring and direction holding unit, and air spring is in large quantity, bears greatly, can satisfy the experimental demand of jumbo size, big quality test piece, and can come the inside atmospheric pressure of actual regulation air spring according to specific load requirement, and the cylindricality rubber and the direction design that the direction holding unit contains can prevent the possible slope phenomenon of large-scale test piece frock in the experimentation when allowing test piece frock triaxial to shake together.

The utility model discloses triaxial vibration test device, the design mechanism is simple, and the reliability is high, does benefit to mass design and manufacturing.

Drawings

FIG. 1 is a schematic front view of an embodiment of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

fig. 3 is a schematic perspective view of a floating mechanism according to an embodiment of the present invention;

fig. 4 is a schematic partial cross-sectional front view of the floating mechanism according to the embodiment of the present invention.

In the above drawings: 1. a work table; 2. a Z-axis vibration generator; 3. an X-axis vibration generator; 4. a Y-axis vibration generator; 5. a Z-axis vibration transmission decoupling device; 6. an X-axis vibration transmission decoupling device; 7. a Y-axis vibration transmission decoupling device; 8. a floating mechanism; 81. an upper support plate; 82. a lower support plate; 83. an air spring; 84. a guide holding unit; 841. a guide bar; 842. a guide hole; 843. a cylindrical rubber; 8431. an upper metal plate; 8432. a middle rubber column; 8433. a lower metal plate; 844. an upper plate; 845. a lower plate; 9. A rigid bottom plate.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): a triaxial vibration test device: referring to FIGS. 1-4:

referring to fig. 1 and 2, the triaxial vibration testing apparatus has a work table 1 for carrying test articles, the work table 1 is connected to a Z-axis vibration generator 2 through a Z-axis vibration transmission decoupling device 5 in a Z-axis direction perpendicular to the bottom, is connected to an X-axis vibration generator 3 through an X-axis vibration transmission decoupling device 6 in a lateral horizontal X-axis direction, and is connected to a Y-axis vibration generator 4 through a Y-axis vibration transmission decoupling device 7 in a lateral horizontal Y-axis direction.

The Z-axis vibration transmission decoupling device 5, the X-axis vibration transmission decoupling device 6 and the Y-axis vibration transmission decoupling device 7 are preferably electric vibration tables, but actually other vibration sources can also be adopted.

The embodiment is characterized in that:

the worktop 1 is mounted to the ground by a floating support structure.

Referring to fig. 3 and 4, the floating support structure includes at least three floating mechanisms 8, the at least three floating mechanisms 8 are uniformly distributed under the work table 1, and each floating mechanism 8 includes an upper support plate 81, a lower support plate 82, an air spring 83, and a plurality of guide holding units 84. Go up relative parallel arrangement from top to bottom of backup pad 81 and lower support plate 82, go up backup pad 81 and table surface 1 fixed connection, the relative ground fixed mounting of lower support plate 82, air spring 83 locates between backup pad 81 and the lower support plate 82, the top and the last backup pad 81 fixed connection of air spring 83, the bottom and the lower support plate 82 fixed connection of air spring 83. Set up on two at least lateral parts of going up backup pad 81 circumference upwards the direction keeps unit 84, direction keeps unit 84 including guide bar 841, guiding hole 842 and cylindricality rubber 843, the relative bottom suspension fagging 82 fixed connection in cylindricality rubber 843's bottom, the top and the guide bar 841 fixed connection of cylindricality rubber 843, guide bar 841 upwards extends in the top center of cylindricality rubber 843, the upper portion warp of guide bar 841 is through the guiding hole 842 and the cooperation of going up backup pad 81 direction.

Specifically, the floating support structure further comprises a rigid bottom plate 9, the lower support plate 82 of each floating mechanism 8 is fixedly mounted on the rigid bottom plate 9, and the rigid bottom plate 9 is connected with the foundation to achieve fixed connection with the ground.

Specifically, the air spring 83 is a finished part, and usually, a metal upper cover plate is disposed on the top of the air spring 83, and a metal lower bottom plate is disposed on the bottom of the air spring 83, and when in use, the upper cover plate is fixedly connected with the upper support plate 81 by a bolt, and the upper bottom plate is fixedly connected with the lower support plate 82 by a bolt.

Referring to fig. 4, the cylindrical rubber 843 is composed of an upper metal plate 8431, a middle rubber column 8432, and a lower metal plate 8433, wherein the top end surface of the middle rubber column 8432 is fixedly connected to the upper metal plate 8431, and the bottom end surface thereof is fixedly connected to the lower metal plate 8433, but the upper metal plate 8431, the middle rubber column 8432, and the lower metal plate 8433 are usually integrally connected and formed when the rubber is made.

Referring to fig. 3 and 4, in particular, the guiding and retaining unit 84 further includes an upper plate 844 and a lower plate 845, the upper plate 844 is abutted against the side edge of the upper supporting plate 81, and the upper plate 844 is fixedly connected with the upper supporting plate 81 through screws; the lower plate 845 is abutted to the side edge of the lower support plate 82, the lower plate 845 and the lower support plate 82 are fixedly connected through screws, the column rubber 843 is arranged between the upper plate 844 and the lower plate 845, the bottom end of the column rubber 843 is fixedly connected with the lower plate 845 through screws, and the guide holes 842 are correspondingly arranged on the upper plate 844. The above is a preferred example, but in practice, it is also possible to integrally connect the upper plate 844 and the upper support plate 81 as a single piece, and it is also possible to integrally connect the lower plate 845 and the lower support plate 82 as a single piece, so that the same effect can be achieved.

Referring to fig. 1 to 4, the working table 1 is rectangular, the number of the floating mechanisms 8 is four, the floating mechanisms are respectively disposed at four corners of the working table 1, the upper supporting plate 81 and the lower supporting plate 82 are rectangular plates, the guide holding units 84 are disposed on two adjacent sides of the upper supporting plate 81, and the sides where the guide holding units 84 are disposed are located at the periphery of the working table 1. Thus, the guide holding units 84 of the four floating mechanisms 8 cooperate to form a whole, so as to keep the table top 1 stable and prevent the table top 1 from overturning. And, two guide holding units 84 are provided on each side of each floating mechanism 8, which is preferable.

The Z-axis vibration transmission decoupling device 5, the X-axis vibration transmission decoupling device 6, and the Y-axis vibration transmission decoupling device 7 may all adopt existing decoupling devices, such as cross linear guide rails, and the specific decoupling devices disclosed in chinese patents CN101487765B and CN102865987A are also applicable in the present case.

The embodiment is particularly suitable for large-scale and heavy-mass vibration tests, has simple design mechanism and high reliability, and is beneficial to large-batch design and production and manufacturing.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A triaxial vibration test device is provided with a working table (1) for bearing test articles, wherein the working table (1) is connected with a Z-axis vibration generator (2) through a Z-axis vibration transmission decoupling device (5) in the Z-axis direction vertical to the bottom, is connected with an X-axis vibration generator (3) through an X-axis vibration transmission decoupling device (6) in the X-axis direction horizontal to the side, and is connected with a Y-axis vibration generator (4) through a Y-axis vibration transmission decoupling device (7) in the Y-axis direction horizontal to the side; the method is characterized in that:

the working table top (1) is arranged to the ground through a floating supporting structure;

the floating support structure comprises at least three floating mechanisms (8), the at least three floating mechanisms (8) are uniformly distributed below the working platform surface (1), and each floating mechanism (8) comprises an upper support plate (81), a lower support plate (82), an air spring (83) and a plurality of guide retaining units (84); the upper supporting plate (81) and the lower supporting plate (82) are arranged in parallel up and down, the upper supporting plate (81) is fixedly connected with the working table top (1), the lower supporting plate (82) is fixedly installed relative to the ground, the air spring (83) is arranged between the upper supporting plate (81) and the lower supporting plate (82), the top of the air spring (83) is fixedly connected with the upper supporting plate (81), and the bottom of the air spring (83) is fixedly connected with the lower supporting plate (82); go up and set up on two at least lateral parts of backup pad (81) circumference ascending the direction keeps unit (84), direction keeps unit (84) including guide bar (841), guiding hole (842) and cylindricality rubber (843), the relative bottom shoe plate (82) fixed connection of cylindricality rubber (843), the top and guide bar (841) fixed connection of cylindricality rubber (843), guide bar (841) upwards extend in the top center of cylindricality rubber (843), the upper portion warp of guide bar (841) the cooperation of leading of guide hole (842) and last backup pad (81).

2. The triaxial vibration testing apparatus of claim 1, wherein: the working table top (1) is rectangular, and the number of the floating mechanisms (8) is four, and the four floating mechanisms are respectively arranged at four corners of the working table top (1).

3. The triaxial vibration testing apparatus of claim 2, wherein: the upper supporting plate (81) and the lower supporting plate (82) are rectangular plates, the guide holding units (84) are arranged on two adjacent side parts of the upper supporting plate (81), and the side parts of the guide holding units (84) are arranged at the periphery of the working table top (1).