Vibration test bench

Abstract

The utility model relates to a vibration testboard, which comprises a base, a voice coil motor in linear motion and a test platform used for positioning a product, the voice coil motor is arranged on the base, the driving end of the voice coil motor is connected with the test platform, and the test platform is arranged above the voice coil motor and is in sliding fit with the top of the voice coil motor. The two ends of the testing platform are in sliding fit with the two ends of the base through sliding assemblies respectively, the testing platform is provided with a first limiting hole and a second limiting hole, the first limiting hole is longer than the second limiting hole, and the voice coil motor is provided with a first positioning hole and a second positioning hole which are used for fixing the positioning column. The first positioning hole corresponds to the first limiting hole, the second positioning hole corresponds to the second limiting hole, and the positioning column is located in the first limiting hole or the second limiting hole. According to the vibration test bench, the test efficiency and the test stability are improved, and the test form can be adjusted according to vibration requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of testing platforms, in particular to a vibration testing platform. Background Art

[0002] Existing vibration test benches have complex structures and primarily use vibration motors for vibration testing. These test benches not only offer limited testing options but also suffer from poor stability, low test efficiency, and high noise levels when testing products such as small vehicles. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a vibration test bench, which is not only simple in structure and easy to operate, but also improves the test efficiency and test stability, and can adjust the test form according to vibration requirements.

[0004] The utility model solves the technical problem by adopting the following technical solution: a vibration test bench, comprising a base, a linear motion voice coil motor, and a test platform for positioning a product, wherein the voice coil motor is mounted on the base, the driving end of the voice coil motor is connected to the test platform, the test platform is located above the voice coil motor and is slidably engaged with the top of the voice coil motor, and the two ends of the test platform are slidably engaged with the two ends of the base via a sliding assembly.

[0005] The test platform is provided with a first limiting hole and a second limiting hole, the length of the first limiting hole is longer than the second limiting hole, the voice coil motor is provided with a first positioning hole for fixing the positioning column and a second positioning hole for fixing the positioning column, the first positioning hole corresponds to the first limiting hole, and the second positioning hole corresponds to the second limiting hole, the positioning column passes through the first limiting hole and is detachably connected to the first positioning hole, or the positioning column passes through the second limiting hole and is detachably connected to the second positioning hole.

[0006] In one embodiment, the voice coil motor of the vibration test bench includes a U-shaped fixed seat and a mover, permanent magnets are provided at the top and bottom of the fixed seat, and gaps are provided between the permanent magnets for the mover to slide. A coil is wound around the mover, and the end of the mover away from the coil is connected to one end of the test platform through a connecting component.

[0007] In one embodiment, the connection assembly of the vibration test bench includes a connection portion and a bolt assembly, the connection portion is located between the mover and the test platform, and the bolt assembly is used to pass through the test platform, the connection portion and the mover to fix the mover and the test platform.

[0008] In one embodiment, the test platform of the vibration test bench is a square platform, and a plurality of annular positioning grooves for positioning the product and a plurality of third positioning holes for positioning the product are provided on the upper surface of the test platform.

[0009] In one embodiment, the sliding assembly of the vibration test bench includes a slider and a guide rail, the guide rail is connected to the base via a fixed block, the slider is connected to the test platform, and the slider and the guide rail are slidably engaged.

[0010] In one embodiment, a displacement sensor for detecting the moving distance of the test platform is provided on the base of the vibration test platform.

[0011] The beneficial effects of this application are:

[0012] This application provides a vibration test bench that uses a voice coil motor to drive a test platform to perform linear, high-frequency reciprocating motion, thereby performing vibration testing on products. The vibration frequency of the test platform can also be adjusted based on vibration testing requirements by inserting a positioning post into a first or second positioning hole. This vibration test bench not only has a simple structure and is easy to operate, but also improves testing efficiency and stability, and allows for adjustable testing methods based on vibration testing requirements.

[0013] The vibration test bench uses a voice coil motor to drive the test platform to perform linear high-frequency reciprocating motion, which not only has high vibration efficiency but also low noise.

[0014] The vibration test bench has an annular positioning groove on the test platform, which improves the positioning effect of the product and ensures the stability of the product during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a vibration test bench according to an embodiment of the present application from one perspective;

[0016] Figure 2 A schematic diagram of a vibration test bench according to an embodiment of the present application from another perspective;

[0017] Figure 3 A schematic diagram of a voice coil motor, a sliding assembly, and a connecting assembly of a vibration test bench according to an embodiment of the present application;

[0018] Figure 4 A schematic diagram of a voice coil motor of a vibration test bench according to an embodiment of the present application;

[0019] in:

[0020] 1. Base; 2. Voice coil motor; 3. Test platform; 4. Sliding assembly; 5. Connecting assembly; 6. Displacement sensor; 21. U-shaped fixing seat; 22. Mover; 23. Permanent magnet; 24. Coil; 211. First positioning hole; 212. Second positioning hole; 31. First limiting hole; 32. Second limiting hole; 33. Positioning column; 34. Annular positioning groove; 35. Third positioning hole; 41. Slider; 42. Guide rail; 43. Fixing block; 51. Connecting part; 52. Bolt assembly. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, an embodiment of the present application provides a vibration test bench, including a base 1, a voice coil motor 2 for linear motion, and a test platform 3 for positioning a product. The voice coil motor 2 is installed on the base 1, and the driving end of the voice coil motor 2 is connected to the test platform 3. The test platform 3 is located above the voice coil motor 2 and slides with the top of the voice coil motor 2. The two ends of the test platform 3 are respectively slidably engaged with the two ends of the base 1 through a sliding assembly 4.

[0023] like Figure 1 and Figure 2 As shown, the test platform 3 is provided with a first limiting hole 31 and a second limiting hole 32, and the length of the first limiting hole 31 is longer than that of the second limiting hole 32. The voice coil motor 2 is provided with a first positioning hole 211 for fixing the positioning column 33 and a second positioning hole 212 for fixing the positioning column 33. The first positioning hole 211 corresponds to the first limiting hole 31, and the second positioning hole 212 corresponds to the second limiting hole 32. The positioning column 33 passes through the first limiting hole 31 and is detachably connected to the first positioning hole 211, or the positioning column 33 passes through the second limiting hole 32 and is detachably connected to the second positioning hole 212.

[0024] Specifically, one end of the mover 22 of the voice coil motor 2 is connected to one end of the test platform 3. The test platform 3 is located above the voice coil motor 2 and slidably engages with the voice coil motor 2. The two ends of the test platform 3 respectively slidably engage with the two ends of the base 1 via a sliding assembly 4. The length of the first limiting hole 31 is longer than the length of the second limiting hole 32. Depending on the vibration testing requirements of the product, a positioning post 33 can be inserted through the first limiting hole 31 and detachably connected to the first positioning hole 211 on the U-shaped fixing base 21 of the voice coil motor 2, so that the positioning post 33 is located within the first limiting hole 31. Alternatively, the positioning post 33 can be inserted through the second limiting hole 32 and detachably connected to the second positioning hole 212 on the U-shaped fixing base 21 of the voice coil motor 2, so that the positioning post 33 is located within the second limiting hole 32. When the voice coil motor 2 drives the test platform 3 to reciprocate at high frequency, the first limiting hole 31 or the second limiting hole 32 slides along the positioning post 33, which limits the reciprocating distance of the test platform 3, thereby adjusting the vibration frequency of the test platform 3 on the product.

[0025] In the above structure, the voice coil mechanism drives the test platform 3 to perform linear, high-frequency reciprocating motion, improving test efficiency and stability while reducing noise. Furthermore, by providing two first and second limiting holes 31 and 32 of different lengths on the test platform 3, in conjunction with the positioning posts 33, the test platform 3 can accommodate various vibration testing requirements. This vibration test bench not only has a simple structure and is easy to operate, but also improves test efficiency and stability, allowing for adjustable testing methods based on vibration requirements.

[0026] like Figure 4 As shown in one embodiment, the voice coil motor 2 of the vibration test bench includes a U-shaped fixing base 21 and a mover 22. Permanent magnets 23 are provided at the top and bottom of the fixing base. A gap is provided between the permanent magnets 23 for the mover 22 to slide. A coil 24 is wound around the mover 22. The end of the mover 22 away from the coil 24 is connected to one end of the test platform 3 via a connecting component 5. When current passes through the coil 24, the coil 24 generates a magnetic field. This magnetic field interacts with the magnetic fields generated by the two permanent magnets 23, causing the coil 24 to drive the mover 22 to move linearly. The configuration of the voice coil motor 2 is not only simple in structure and small in size, but also has a fast vibration speed and high vibration accuracy, thereby greatly improving the efficiency of vibration testing of products and reducing noise.

[0027] like Figure 3As shown, in one embodiment, the connection assembly 5 of the vibration test bench includes a connection portion 51 and a bolt assembly 52. ​​The connection portion 51 is located between the mover 22 and the test platform 3. The bolt assembly 52 is used to pass through the test platform 3, the connection portion 51, and the mover 22 to securely connect the mover 22 and the test platform 3. The provision of the connection assembly 5 not only resolves the height difference between the test platform 3 and the mover 22, but also improves the fixing strength between the mover 22 and the test platform 3.

[0028] like Figure 2 As shown, in one embodiment, the test platform 3 of the vibration test bench is a square platform. The upper surface of the test platform 3 is provided with a plurality of annular positioning grooves 34 for positioning the product and a plurality of third positioning holes 35 for positioning the product. Three annular positioning grooves 34 and a plurality of third positioning holes 35 can be provided on the upper surface of the test platform 3. Products of different specifications are positioned within the annular positioning grooves 34, and the products can be positioned in the third positioning holes 35 of the test platform 3 using positioning pins as needed. The provision of the annular positioning grooves 34 and positioning holes greatly improves the positioning effect of the product and enhances the stability of the product during vibration.

[0029] like Figure 3 As shown in one embodiment, the sliding assembly 4 of the vibration test bench includes a slider 41 and a guide rail 42. The guide rail 42 is connected to the base 1 via a fixing block 43. The slider 41 is connected to the test platform 3, and the slider 41 and the guide rail 42 slide together. This arrangement facilitates the horizontal movement of the two ends of the test platform 3 along the two ends of the base 1.

[0030] like Figure 3 As shown, in one embodiment, a displacement sensor 6 for detecting the moving distance of the test platform 3 is provided on the base 1 of the vibration test platform. The displacement sensor 6 can detect the moving distance of the test platform to ensure the accuracy of the vibration test.

[0031] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A vibration test bench, characterized in that: The invention comprises a base (1), a voice coil motor (2) for linear motion, and a test platform (3) for positioning a product, wherein the voice coil motor (2) is mounted on the base (1), a driving end of the voice coil motor (2) is connected to the test platform (3), the test platform (3) is located above the voice coil motor (2) and is slidably engaged with the top of the voice coil motor (2), and two ends of the test platform (3) are slidably engaged with two ends of the base (1) via a sliding assembly (4). The test platform (3) is provided with a first limiting hole (31) and a second limiting hole (32), the length of the first limiting hole (31) is longer than that of the second limiting hole (32), the voice coil motor (2) is provided with a first positioning hole (211) for fixing the positioning column (33) and a second positioning hole (212) for fixing the positioning column (33), the first positioning hole (211) corresponds to the first limiting hole (31), the second positioning hole (212) corresponds to the second limiting hole (32), the positioning column (33) passes through the first limiting hole (31) and is detachably connected to the first positioning hole (211), or the positioning column (33) passes through the second limiting hole (32) and is detachably connected to the second positioning hole (212).

2. The vibration test bench according to claim 1, characterized in that: The voice coil motor (2) comprises a U-shaped fixing seat (21) and a mover (22), wherein permanent magnets (23) are provided at the top and bottom of the fixing seat, and gaps are provided between the permanent magnets (23) for the mover (22) to slide. A coil (24) is wound around the mover (22), and one end of the mover (22) away from the coil (24) is connected to one end of the test platform (3) via a connecting assembly (5).

3. The vibration test bench according to claim 2, characterized in that: The connecting assembly (5) comprises a connecting portion (51) and a bolt assembly (52); the connecting portion (51) is located between the mover (22) and the test platform (3); and the bolt assembly (52) is used to pass through the test platform (3), the connecting portion (51) and the mover (22) to fixedly connect the mover (22) and the test platform (3).

4. The vibration test bench according to claim 1, characterized in that: The test platform (3) is a square platform, and a plurality of annular positioning grooves (34) for positioning the product and a plurality of third positioning holes (35) for positioning the product are provided on the upper surface of the test platform (3).

5. The vibration test bench according to claim 1, characterized in that: The sliding assembly (4) comprises a slider (41) and a guide rail (42); the guide rail (42) is connected to the base (1) via a fixed block (43); the slider (41) is connected to the test platform (3); and the slider (41) and the guide rail (42) are in sliding engagement.

6. The vibration test bench according to claim 1, characterized in that: The base (1) is provided with a displacement sensor (6) for detecting the moving distance of the test platform (3).

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