High-rigidity side-hung vibration clamp

Abstract

The utility model relates to the technical field of side-hung vibration fixtures, in particular to a high-rigidity side-hung vibration fixture, which comprises a frame body, a mounting plate is fixedly mounted in the frame body, a test piece is movably mounted on the front surface of the mounting plate, the frame body comprises a bottom plate, a rear plate is fixedly mounted on the back surface of the bottom plate, and the test piece is movably mounted on the rear plate. A middle support plate is fixedly mounted in the middle of the bottom plate on the front side of the rear plate, and side plates are fixedly mounted on two sides of the upper surface of the bottom plate on two sides of the front side of the rear plate respectively; the back face of the mounting plate is fixedly connected with the middle supporting plate, the two sides of the mounting plate are fixedly connected with the side plates respectively, the steel bushings are fixedly mounted on the front face of the mounting plate in a rectangular array mode, and holes are formed in the four corners of the test piece respectively, and the test piece is arranged on the steel bushings in a sleeving mode. The side hanging type vibration clamp has the advantages of being high in structural stability, large in rigidity and good in damping performance, and solves the problem that a traditional side hanging type vibration clamp is low in fundamental frequency and prone to resonance to cause test failure.

Description

Technical Field

[0001] This utility model relates to the field of side-mounted vibration clamp technology, specifically a high-rigidity side-mounted vibration clamp. Background Technology

[0002] With the development of vibration testing technology and the increasing demands of testing, the importance of fixture design has become increasingly prominent. An inappropriate fixture design may not only lead to test failure but also cause structural damage, with serious consequences.

[0003] As attached Figure 4 The image shows a traditional side-mounted vibration fixture. This fixture has the advantages of simple structure and easy manufacturing, but its stiffness and damping are relatively low. Simulation calculations and experimental verification using ANSYS software show that the fundamental frequency (first natural frequency) of this traditional side-mounted vibration fixture is in the range of 200–400 Hz. However, for specimens with a fundamental frequency in the range of 100–300 Hz, it does not meet the general requirement that the fixture's fundamental frequency should be greater than twice the specimen's fundamental frequency. This easily leads to resonance during vibration testing, causing structural damage, test failure, delays in testing progress, and a significant increase in cost. Therefore, a high-stiffness side-mounted vibration fixture is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-rigidity side-mounted vibration clamp with advantages of high structural stability, high stiffness, and good damping performance, which solves the problem of low fundamental frequency and easy resonance leading to test failure in traditional side-mounted vibration clamps.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-rigidity side-mounted vibration clamp, comprising a frame, an mounting plate fixedly installed inside the frame, a test specimen movably installed on the front of the mounting plate, the frame comprising a bottom plate, a rear plate fixedly installed on the back of the bottom plate, a middle support plate fixedly installed in the middle of the bottom plate on the front of the rear plate, and side plates fixedly installed on both sides of the upper surface of the bottom plate on both sides of the front of the rear plate.

[0006] The back of the mounting plate is fixedly connected to the central support plate, and the two sides of the mounting plate are fixedly connected to the side plates respectively. The front of the mounting plate is fixedly installed with steel bushings in a rectangular array. The specimen has holes opened at the four corners and is fitted onto the steel bushings.

[0007] Preferably, the front end of the central support plate has equidistant first screw holes, and the mounting plate at the front end of the central support plate has equidistant second mounting holes. This design allows for a tight fit between the central support plate and the mounting plate, enhancing the stability and rigidity of the overall structure. The equidistant screw holes ensure accurate positioning of the mounting plate on the central support plate, thereby improving the precision and reliability of the fixture.

[0008] Preferably, a countersunk bolt is movably inserted into the second mounting hole, with its rear end passing through the second mounting hole and threadedly connected to the first threaded hole. The use of countersunk bolts in this design allows the bolt head to be hidden beneath the mounting surface, reducing potential damage or interference caused by protruding bolts, while also providing an aesthetically pleasing and compact connection. The rear end of the countersunk bolt passing through the second mounting hole and threadedly connected to the first threaded hole not only enhances the connection's strength but also allows for quick disassembly and adjustment, improving the fixture's flexibility and ease of maintenance.

[0009] Preferably, each of the two side plates has a first mounting hole, and the mounting plates on opposite sides of the two side plates have second screw holes equidistantly spaced on both sides. The design of the mounting holes on the side plates and the screw holes on the mounting plates provides a flexible and stable method for fixing the side plates. This design allows for precise alignment and fixation between the side plates and the mounting plates, enhancing the overall rigidity and stability of the fixture. The equidistant mounting holes ensure accurate positioning of the side plates on the mounting plates, thereby improving the accuracy and reliability of the fixture.

[0010] Preferably, a countersunk bolt is movably inserted into the first mounting hole, with one end of the countersunk bolt passing through the first mounting hole and threadedly connected to the second threaded hole. This design, where the countersunk bolt passes through the first mounting hole and is threadedly connected to the second threaded hole, also provides an aesthetically pleasing and compact connection method. This design not only enhances the connection strength between the side plate and the mounting plate but also allows for quick disassembly and adjustment, improving the flexibility of the clamp and the ease of maintenance.

[0011] Preferably, quick-release screws are movably inserted into the openings at the four corners of the specimen. The rear end of the quick-release screw passes through the openings on the specimen and is threaded into the steel bushing. The use of quick-release screws, as mentioned in the design, allows for quick and convenient installation and removal of the specimen. The design of the quick-release screws reduces the time required for specimen installation and removal, improving work efficiency. At the same time, this design also ensures the stability of the specimen during vibration, preventing the specimen from falling off due to vibration, and ensuring the safety and reliability of the test.

[0012] Preferably, the mounting plate, side plates, center support plate, and rear plate are all provided with weight-reduction holes, and all are made of aluminum alloy. The design of the weight-reduction holes and the use of aluminum alloy aims to reduce the weight of the fixture while maintaining the required strength and rigidity. The weight-reduction holes reduce material usage without sacrificing structural integrity, thereby reducing the overall weight and improving the fixture's portability and operational flexibility. The use of aluminum alloy provides a good strength-to-weight ratio, while also exhibiting good corrosion resistance and machinability, making the fixture more durable and easier to manufacture and maintain.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention forms a stable support structure by fixing an installation plate within the frame and movably installing the specimen on the front of the installation plate. The frame includes a base plate, a rear plate, a middle support plate, and side plates; the fixed installation of these components enhances the overall structural stability. The installation plate, side plates, middle support plate, and rear plate are all made of aluminum alloy. Aluminum alloy has a high modulus of elasticity and low density, providing high specific stiffness, thereby improving the rigidity of the fixture. Weight-reduction holes are provided on the installation plate, side plates, middle support plate, and rear plate. This design reduces weight while maintaining structural strength, improving the dynamic response capability of the fixture. By adding the middle support plate and rear plate, the fundamental frequency of the fixture is increased to 600–800 Hz, more than twice the fundamental frequency of the specimen, effectively avoiding resonant coupling between the vibration fixture and the specimen. Quick-release screws are movably inserted into the openings at the four corners of the specimen. This design allows the specimen to be quickly and securely installed on the steel bushing, reducing the possibility of loosening during vibration. By optimizing the design, such as using a multi-objective genetic algorithm to optimize structural parameters, the first-order natural frequency of the fixture can be increased while reducing its mass, thereby improving the fixture's dynamic performance. In summary, this high-stiffness side-mounted vibration fixture design, through structural optimization, material selection, weight-reduction hole design, and precise connection methods, improves the fixture's structural stability and stiffness. Furthermore, by increasing the fundamental frequency, resonance is avoided, thus solving the problem of resonance-induced test failures in traditional fixtures during vibration testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the frame connection structure of this utility model;

[0017] Figure 3 This is an exploded view of the specimen installation structure of this utility model;

[0018] Figure 4 This is a schematic diagram of a traditional side-mounted vibration clamp.

[0019] In the diagram: 1. Frame; 11. Base plate; 12. Side plate; 121. First mounting hole; 13. Middle support plate; 131. First screw hole; 14. Rear plate; 2. Specimen; 21. Quick-release screw; 3. Mounting plate; 31. Second screw hole; 32. Second mounting hole; 33. Steel bushing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, one embodiment of this utility model is provided: a high-rigidity side-mounted vibration clamp, including a frame 1, an mounting plate 3 fixedly installed inside the frame 1, a test piece 2 movably installed on the front of the mounting plate 3, the frame 1 including a bottom plate 11, a rear plate 14 fixedly installed on the back of the bottom plate 11, a middle support plate 13 fixedly installed in the middle of the bottom plate 11 on the front of the rear plate 14, and side plates 12 fixedly installed on both sides of the upper surface of the bottom plate 11 on both sides of the front of the rear plate 14.

[0022] The back of the mounting plate 3 is fixedly connected to the central support plate 13, and the two sides of the mounting plate 3 are fixedly connected to the side plates 12 respectively. The front of the mounting plate 3 is fixedly installed with steel bushings 33 in a rectangular array. The specimen 2 has holes opened at the four corners and is fitted onto the steel bushings 33.

[0023] Specifically, a stable support structure is formed by fixing mounting plate 3 inside the frame 1 and movably mounting specimen 2 on the front of mounting plate 3. Frame 1 includes a base plate 11, a rear plate 14, a middle support plate 13, and side plates 12; the fixed installation of these components enhances the overall structural stability. Mounting plate 3, side plates 12, middle support plate 13, and rear plate 14 are all made of aluminum alloy. Aluminum alloy has a high modulus of elasticity and low density, providing high specific stiffness, thereby improving the rigidity of the fixture. Weight-reduction holes are provided on mounting plate 3, side plates 12, middle support plate 13, and rear plate 14. This design reduces weight while maintaining structural strength, improving the dynamic response capability of the fixture. By adding middle support plate 13 and rear plate 14, the fundamental frequency of the fixture is increased to 600–800 Hz, more than twice the fundamental frequency of the specimen, effectively avoiding resonant coupling between the vibrating fixture and specimen 2. Quick-release screws 21 are movably inserted into the openings at the four corners of specimen 2. This design allows specimen 2 to be quickly and securely mounted on the steel bushing 33, reducing the possibility of loosening during vibration. Through optimized design, such as using a multi-objective genetic algorithm to optimize structural parameters, the first-order natural frequency of the fixture can be increased while reducing its mass, thereby improving the dynamic performance of the fixture. In summary, this high-stiffness side-mounted vibration fixture design improves the structural stability and stiffness of the fixture through structural optimization, material selection, weight-reduction hole design, and precise connection methods. Furthermore, by increasing the fundamental frequency, resonance is avoided, thus solving the problem of resonance-induced test failure in traditional fixtures during vibration testing. Example

[0024] To improve the stability of the connection structure between the frame and the mounting plate, such as Figure 2 , Figure 3 As shown, in this embodiment, the front end of the middle support plate 13 is provided with first screw holes 131 at equal intervals, and the mounting plate 3 at the front end of the middle support plate 13 is provided with second mounting holes 32 at equal intervals. The design allows for a tight fit between the middle support plate 13 and the mounting plate 3, enhancing the stability and rigidity of the overall structure. By providing screw holes at equal intervals, the position of the mounting plate 3 on the middle support plate 13 can be ensured to be accurate, thereby improving the precision and reliability of the fixture.

[0025] Furthermore, a countersunk bolt is movably inserted into the second mounting hole 32. The rear end of the countersunk bolt passes through the second mounting hole 32 and is threaded into the first threaded hole 131. The use of countersunk bolts in this design allows the bolt head to be hidden below the mounting surface, thus reducing potential damage or interference caused by bolt protrusion, while also providing an aesthetically pleasing and compact connection. The rear end of the countersunk bolt passing through the second mounting hole 32 and threaded into the first threaded hole 131 not only enhances the strength of the connection but also allows for quick disassembly and adjustment, improving the flexibility of the clamp and the ease of maintenance.

[0026] Furthermore, each of the two side plates 12 has a first mounting hole 121, and the mounting plate 3 on the opposite side of each side plate 12 has second screw holes 31 equidistantly spaced on both sides. The design of the mounting holes on the side plates 12 and the screw holes on the mounting plate 3 provides a flexible and stable method for fixing the side plates. This design allows for precise alignment and fixation between the side plates 12 and the mounting plate 3, enhancing the overall rigidity and stability of the fixture. The equidistant mounting holes ensure accurate positioning of the side plates 12 on the mounting plate, thereby improving the accuracy and reliability of the fixture.

[0027] Furthermore, a countersunk bolt is movably inserted into the first mounting hole 121, with one end of the countersunk bolt passing through the first mounting hole 121 and threadedly connected to the second threaded hole 31. This design, where the countersunk bolt passes through the first mounting hole 121 and is threadedly connected to the second threaded hole 31, also provides an aesthetically pleasing and compact connection method. This design not only enhances the connection strength between the side plate 12 and the mounting plate 3 but also allows for quick disassembly and adjustment, improving the flexibility of the clamp and the ease of maintenance.

[0028] Furthermore, quick-release screws 21 are movably inserted into the openings at the four corners of specimen 2. The rear end of the quick-release screws 21 passes through the openings on specimen 2 and is threaded into the steel bushing 33. The use of quick-release screws 21, as mentioned in the design, allows specimen 2 to be installed and removed quickly and easily. The design of quick-release screws 21 reduces the time for specimen installation and removal, improving work efficiency. At the same time, this design also ensures the stability of specimen 2 during vibration, preventing specimen from falling off due to vibration, and ensuring the safety and reliability of the test.

[0029] Furthermore, weight-reduction holes are provided on the mounting plate 3, side plate 12, middle support plate 13, and rear plate 14. All four components are made of aluminum alloy. The design of the weight-reduction holes and the use of aluminum alloy aims to reduce the weight of the fixture while maintaining the required strength and rigidity. The weight-reduction holes reduce material usage without sacrificing structural integrity, thereby reducing the overall weight and improving the fixture's portability and operational flexibility. The use of aluminum alloy provides a good strength-to-weight ratio, along with excellent corrosion resistance and machinability, making the fixture more durable and easier to manufacture and maintain.

[0030] When using this invention, the frame 1 of the high-rigidity side-mounted vibration fixture is assembled first. The base plate 11 is placed in a suitable position, and then the rear plate 14 is fixedly installed on its back. Next, the middle support plate 13 is fixedly installed in the middle of the base plate 11, and the side plates 12 are fixedly installed on both sides of the upper surface of the base plate 11. Next, the mounting plate 3 is installed. The back of the mounting plate 3 is fixedly connected to the middle support plate 13, and both sides of the mounting plate 3 are fixedly connected to the side plates 12. Steel bushings 33 are fixedly installed in a rectangular array on the front of the mounting plate 3; these steel bushings 33 will be used to support the specimen 2. After the mounting plate 3 is installed, the specimen 2 is installed. The specimen 2 is fitted onto the steel bushings 33 through the holes at its four corners, ensuring the specimen 2 is stably fixed. To further fix the specimen 2, quick-release screws 21 are movably inserted into the openings at the four corners of the specimen 2, and the rear ends of the quick-release screws 21 are passed through the openings on the specimen 2 and threaded into the steel bushings 33. Finally, the entire fixture is installed on the vibration table for use. Before installation, ensure all components are correctly installed, bolts are tightened, and specimen 2 is securely fixed. Start the vibration table and conduct a vibration test on specimen 2 according to the predetermined vibration spectrum. After the test, turn off the vibration table, disassemble specimen 2 and the fixture, and perform necessary inspections and maintenance. This completes the usage procedure for the high-stiffness side-mounted vibration fixture, ensuring that specimen 2 can safely and effectively receive vibration during the vibration test.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-rigidity side-mounted vibration clamp, comprising a frame (1), wherein a mounting plate (3) is fixedly installed inside the frame (1), and a test specimen (2) is movably mounted on the front side of the mounting plate (3), characterized in that: The frame (1) includes a base plate (11), a rear plate (14) is fixedly installed on the back of the base plate (11), a middle support plate (13) is fixedly installed in the middle of the base plate (11) on the front of the rear plate (14), and side plates (12) are fixedly installed on the upper surfaces of the base plate (11) on both sides of the front of the rear plate (14). The back of the mounting plate (3) is fixedly connected to the middle support plate (13), and the two sides of the mounting plate (3) are fixedly connected to the side plates (12) respectively. The front of the mounting plate (3) is fixedly installed with steel bushings (33) in a rectangular array. The specimen (2) has holes at the four corners and is fitted onto the steel bushings (33).

2. The high-rigidity side-mounted vibration clamp according to claim 1, characterized in that, The front end of the middle support plate (13) is provided with first screw holes (131) at equal intervals, and the mounting plate (3) at the front end of the middle support plate (13) is provided with second mounting holes (32) at equal intervals.

3. A high-rigidity side-mounted vibration clamp according to claim 2, characterized in that, A countersunk bolt is movably inserted into the second mounting hole (32). The rear end of the countersunk bolt in the second mounting hole (32) passes through the second mounting hole (32) and is threadedly connected to the first screw hole (131).

4. A high-rigidity side-mounted vibration clamp according to claim 1, characterized in that, The two side plates (12) are respectively provided with first mounting holes (121), and the mounting plates (3) on the opposite side of the two side plates (12) are respectively provided with second screw holes (31) at equal intervals on both sides.

5. A high-rigidity side-mounted vibration clamp according to claim 4, characterized in that, A countersunk bolt is movably inserted into the first mounting hole (121). One end of the countersunk bolt in the first mounting hole (121) passes through the first mounting hole (121) and is threadedly connected to the second screw hole (31).

6. A high-rigidity side-mounted vibration clamp according to claim 1, characterized in that, Quick-release screws (21) are movably inserted into the openings at the four corners of the specimen (2). The rear end of the quick-release screws (21) passes through the openings on the specimen (2) and is threaded into the steel bushing (33).

7. A high-rigidity side-mounted vibration clamp according to claim 1, characterized in that, Weight reduction holes are provided on the mounting plate (3), side plate (12), middle support plate (13) and rear plate (14). The mounting plate (3), side plate (12), middle support plate (13) and rear plate (14) are all made of aluminum alloy.

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