Anti-offset structure for large displacement vibration table

Abstract

This utility model discloses an anti-deviation structure for a large displacement vibration table, relating to the technical field of large displacement vibration table equipment. It includes a base, with four spring damping groups installed on the top periphery of the base. A top plate is fixedly connected to the top of the four spring damping groups. The top plate has grooves on both sides, with anti-deviation rods installed within the grooves. Protrusions are fixed to the top periphery of the anti-deviation rods, and the anti-deviation rods are engaged with the grooves via the protrusions. A connecting plate is bolted to the middle of the top of the base, and an anti-deviation component is installed within the connecting plate. This utility model, through the design of the large spring seats, enables more stable and gentle vibration of the top plate, avoiding damage to the top plate and the tested object due to rigid collisions. The anti-deviation rods effectively prevent horizontal deviation of the top plate during large displacement vibration. The anti-deviation component effectively prevents horizontal deviation of the top plate, solving the problem that the top plate easily deviates horizontally during large displacement vibration, affecting the test results.

Description

Technical Field

[0001] This utility model relates to the technical field of large displacement vibration table equipment, and in particular to the anti-deviation structure of large displacement vibration table. Background Technology

[0002] Large displacement vibration tables are key testing equipment in high-end manufacturing industries and scientific research fields such as aerospace, automobile manufacturing, and electronic equipment. They are mainly used to simulate complex working conditions such as earthquakes and mechanical vibrations to test the vibration resistance and reliability of products or materials.

[0003] Traditional large-displacement vibration tables often rely on simple rigid supports or a single guide structure to maintain the stability of the top plate. In high-frequency, large-amplitude vibration tests, the top plate is prone to horizontal displacement under the excitation force. This displacement can cause relative sliding or attitude changes between the tested object and the vibration table, resulting in deviations between the vibration parameters input during the test and the parameters actually acting on the object. This leads to distorted test data that cannot accurately reflect the vibration response characteristics of the product. For example, in vibration fatigue testing of automotive parts, top plate displacement may cause uneven stress on the parts, resulting in incorrect fatigue life data, which in turn affects product design and quality control. Therefore, it is necessary to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-deviation structure for a large displacement vibration table.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an anti-deviation structure for a large displacement vibration table, including a base, four spring damping groups installed on the top periphery of the base, a placement top plate fixedly connected to the top of the four spring damping groups, grooves on both sides of the placement top plate, an anti-deviation rod provided in the groove, a protrusion fixedly connected to the top periphery of the anti-deviation rod, the anti-deviation rod being engaged in the groove by the protrusion, and a connecting plate fixedly connected to the middle section of the top of the base by bolts, the connecting plate containing an anti-deviation component.

[0006] Preferably, a plurality of support shafts are fixedly connected to the top end face of the connecting plate, one end of the support shaft is fixedly connected to the bottom of the placement top plate, the connecting plate has an installation groove, and a plurality of sliding grooves are opened on the outside of the installation groove, the installation groove and the sliding grooves intersect.

[0007] Preferably, the anti-deviation component includes an intermediate component disposed in the mounting groove, wherein a plurality of spring telescopic rods are fixedly connected to the side wall of the intermediate component, and a positioning component is fixedly connected to one end of each spring telescopic rod.

[0008] Preferably, one end of the slide is provided with a T-shaped groove, and a pin for controlling the length of the spring telescopic rod is inserted into the T-shaped groove.

[0009] Preferably, the spring damping assembly includes a large spring seat located at the top of the base, a guide rod inside the large spring seat, limit blocks symmetrically welded to the side wall of the base, small spring seats welded to the limit blocks, and the bottom of the guide rod inserted into the limit blocks.

[0010] Preferably, the positioning member has an inclined guide portion on the side near the slide groove, and the inclined guide portion is attached to the inner wall of the slide groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the large spring seat and the guide rod makes the vibration of the top plate more stable and gentle, avoiding damage to the top plate and the test object due to rigid collision, and extending the service life of the vibration table; the cooperation between the anti-deviation rod and the groove can effectively prevent the top plate from shifting horizontally during large displacement vibration, ensuring the stability of the top plate position, thereby ensuring the stability of the test object during vibration and the accuracy of the test data; the setting of the anti-deviation component can effectively prevent the top plate from shifting horizontally, and the position of the top plate can be monitored and adjusted in real time to ensure that the top plate remains in the correct position during vibration, solving the problem that the top plate is prone to horizontal deviation during large displacement vibration, which affects the test results. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall first-view structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the internal second-view structure proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of some parts proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the anti-deviation component structure proposed in this utility model.

[0017] The numbers in the diagram are: 1. Top plate; 2. Large spring seat; 3. Guide rod; 4. Anti-deviation rod; 5. Base; 6. Groove; 7. Limiting block; 8. Support shaft; 9. Positioning component; 10. Intermediate component; 11. Spring telescopic rod; 12. T-slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-4 The anti-deviation structure of the large displacement vibration table of this utility model includes a base 5. Four spring damping groups are installed on the top periphery of the base 5. A placement top plate 1 is fixed to the top of the four spring damping groups. The placement top plate 1 ensures that the test object can be placed stably on the vibration table, avoiding the object from falling or the test data from inaccurate due to the instability of the top plate 1. The placement top plate 1 has grooves 6 on both sides. The grooves 6 ensure that the anti-deviation rod 4 can be accurately installed on the top plate 1 and fit tightly with the top plate 1 to effectively play the anti-deviation role. The anti-deviation rod 4 is provided in the groove 6. The anti-deviation rod 4 effectively prevents the top plate 1 from shifting horizontally during large displacement vibration, ensuring the stability of the top plate 1, thereby ensuring the stability of the test object during vibration and the accuracy of the test data. It enhances the anti-deviation ability of the overall structure of the vibration table. The anti-deviation rod 4 has a protrusion fixed to the top periphery. The anti-deviation rod 4 is engaged in the groove 6 by the protrusion. A connecting plate is fixed to the middle of the top of the base 5 by bolts. The connecting plate contains an anti-deviation component.

[0020] In this invention, multiple support shafts 8 are fixedly connected to the top end face of the connecting plate. One end of each support shaft 8 is fixedly connected to the bottom of the top plate 1. An installation groove is provided inside the connecting plate, and multiple sliding grooves are opened on the outer side of the installation groove. The installation groove and the sliding grooves intersect, and the support shafts 8 facilitate a more stable connection between the top plate 1 and the connecting plate, reducing the shaking and displacement of the top plate 1 during vibration. The anti-deviation component includes an intermediate member 10 located within the installation groove. Multiple spring telescopic rods 11 are fixedly connected to the side wall of the intermediate member 10. One end of each spring telescopic rod 11 is fixedly connected to a positioning member 9. The anti-deviation component ensures the stable operation of the spring telescopic rods 11 and allows the multiple positioning members 9 to work together, improving the overall performance of the anti-deviation component. A T-slot 12 is provided at one end of each sliding groove. A pin for controlling the length of the spring telescopic rod 11 is inserted into the T-slot 12, allowing the user to easily adjust the length according to actual needs. The working state of the spring telescopic rod 11 enables flexible adjustment of the anti-deviation structure; the spring damping assembly includes a large spring seat 2 located on the top of the base 5, with a guide rod 3 inside the large spring seat 2, and limit blocks 7 symmetrically welded on the side wall of the base 5, with small spring seats welded on the limit blocks 7. The bottom of the guide rod 3 is inserted into the limit blocks 7. The large spring seat 2 effectively reduces the vibration amplitude and impact force of the vibration table, reducing the impact of vibration on the surrounding environment and equipment; the positioning component 9 has an inclined guide part on the side near the slide groove, and the inclined guide part fits against the inner wall of the slide groove. The positioning component 9 effectively prevents the top plate 1 from shifting in the horizontal direction, and allows for real-time monitoring and adjustment of the position of the top plate 1, ensuring that the top plate 1 remains in the correct position during vibration; improving the operating accuracy and stability of the vibration table, and reducing test errors caused by deviation.

[0021] Working Principle: In the use of this invention, the object to be tested is first placed on the top plate 1. The top plate 1 acts as a bearing platform, bearing the weight of the object and the force generated by vibration. During vibration, the top plate 1 transmits the force to the spring damping assembly below. The large spring seat 2 within the spring damping assembly plays a core buffering role, absorbing and dispersing vibration energy through elastic deformation, reducing the impact force transmitted from the vibration table to the base 5. Simultaneously, the guide rod 3 passes through the large spring seat 2 and the limiting block 7, providing guidance for the vertical movement of the large spring and the top plate 1, ensuring that the top plate 1 vibrates stably in the vertical direction and preventing it from tilting or swaying horizontally. To avoid affecting test accuracy due to uncontrolled vibration direction, in the horizontal direction, the anti-deviation rod 4 closely engages with the groove 6 of the top plate 1, directly constraining the top plate 1. The anti-deviation rod 4 is engaged in the groove 6 by a protrusion. When the top plate 1 experiences horizontal displacement due to vibration, the anti-deviation rod 4 bears the force and transmits it to other structural components, limiting the horizontal displacement of the top plate 1 and ensuring the stability of the top plate 1 in the horizontal direction, providing a reliable test platform for the object being tested. Then, the connecting plate and its internal anti-deviation components further enhance the anti-deviation effect, with one end of the support shaft 8 fixed to the top of the connecting plate. The other end connects to the bottom of the top plate 1, and the auxiliary spring damping component shares the weight and vibration force of the top plate 1, enhancing the connection strength between the top plate 1 and the connecting plate. When the top plate 1 shifts horizontally, the spring telescopic rod 11 in the anti-shift assembly pushes the positioning part 9 to move in the shift direction. The positioning part 9 has a beveled guide portion that fits against the inner wall of the slide groove. As the positioning part 9 moves, it makes close contact with the inner wall of the slide groove, preventing the top plate 1 from shifting further, thus achieving real-time dynamic adjustment and limitation of the top plate 1's shift. In addition, the T-slot 12 plays a key role in the adjustment of the anti-shift structure. In practical applications, it can be adjusted according to different tests. According to the requirements and vibration conditions, the pin is inserted into the T-slot 12 to limit the length of the spring telescopic rod 11, thereby adjusting the preload and working state of the spring telescopic rod 11. This flexible adjustment method allows the anti-offset structure to adapt to diverse working scenarios, ensuring that the vibration table can maintain stable operation under different conditions and meet the requirements of high-precision vibration testing. Finally, through the coordinated work of the above components, the anti-offset structure of the large displacement vibration table effectively controls the offset of the top plate 1 during vibration, reducing the impact of vibration energy on the equipment and testing environment. This concludes the use of the anti-offset structure of the large displacement vibration table.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Anti-deviation structure of large displacement shaking table, comprising a base (5), characterized in that: Four spring damping groups are installed on the top periphery of the base (5). A placement top plate (1) is fixed to the top of the four spring damping groups. The placement top plate (1) has grooves (6) on both sides. An anti-deviation rod (4) is provided in the groove (6). A protrusion is fixed to the top periphery of the anti-deviation rod (4). The anti-deviation rod (4) is engaged in the groove (6) by the protrusion. A connecting plate is fixed to the top middle section of the base (5) by bolts. An anti-deviation component is provided in the connecting plate.

2. The anti-offset structure of a large-displacement shaking table according to claim 1, characterized in that: Multiple support shafts (8) are fixed to the top end face of the connecting plate. One end of the support shaft (8) is fixed to the bottom of the placement top plate (1). An installation groove is opened in the connecting plate. Multiple sliding grooves are opened on the outside of the installation groove. The installation groove and the sliding grooves intersect.

3. The anti-offset structure of a large-displacement shaking table according to claim 2, characterized in that: The anti-deviation component includes an intermediate part (10) disposed in the mounting groove. A plurality of spring telescopic rods (11) are fixedly connected to the side wall of the intermediate part (10), and a positioning part (9) is fixedly connected to one end of the spring telescopic rod (11).

4. The anti-offset structure of a large-displacement shaking table according to claim 3, characterized in that: A T-slot (12) is provided at one end of the slide, and a pin for controlling the length of the spring telescopic rod (11) is inserted into the T-slot (12).

5. The anti-offset structure of large-displacement shaking table according to claim 1, characterized in that: The spring damping assembly includes a large spring seat (2) located at the top of the base (5), a guide rod (3) inside the large spring seat (2), symmetrical limit blocks (7) welded on the side wall of the base (5), a small spring seat welded on the limit block (7), and the bottom of the guide rod (3) inserted into the limit block (7).

6. The anti-offset structure of a large-displacement shaking table according to claim 3, characterized in that: The positioning component (9) has an inclined guide on the side near the slide groove, and the inclined guide is attached to the inner wall of the slide groove.

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