Stiffened plate vibration test bench

Abstract

The application relates to a reinforced plate vibration test bench, which comprises a first chassis and a second chassis, the first chassis and the second chassis are hinged in the middle and form an X shape; horizontal through grooves and vertical through grooves are arranged on the first chassis and the second chassis; a fixing frame is connected with the first chassis or the second chassis through a threaded ring and a positioning head; a first pressing plate and a second pressing plate are arranged on the fixing frame in an up-down mode; the four corners of the first pressing plate and the second pressing plate correspond to the fixing frames at the two ends of the first chassis and the second chassis respectively; a screw rod is arranged on the fixing frame, and the screw rod fixes the first pressing plate, the second pressing plate, the first chassis and the second chassis. Through the design of the chassis, the fixing frame, the pressing plate and the screw rod, the experimental reinforced plate with different thicknesses can be adapted; through the rotation of the central bearing of the chassis, the experimental reinforced plate with different widths and heights can be adapted; and the design of the pressing block and the fixing frame realizes the fixation of the reinforced plate.

Description

Technical Field

[0001] This invention relates to the field of vibration testing, and more particularly to a vibration testing bench for stiffened plates. Background Technology

[0002] Currently, vibration testing benches for stiffened plates mainly suffer from the following problems: unreasonable test bench structure or design parameters, such as low structural stiffness, causing resonance during vibration testing; insufficient clamping force, leading to loosening at the connection between the stiffened plate and the vibration bench during vibration testing, failing to effectively achieve the boundary conditions of four-sided fixed support for the stiffened plate; high cost, requiring customized clamping bodies for stiffened plates of different sizes; and most vibration testing benches have relatively complex tooling. Summary of the Invention

[0003] To address the above problems, this invention provides a stiffened plate vibration test bench that is applicable to a wide range of sizes, reliably fixed, and has simple tooling.

[0004] The technical solution adopted in this invention is: a stiffened plate vibration test bench, characterized in that: it includes a first base frame and a second base frame, the first base frame and the second base frame are hinged in the middle to form an X shape; both the first base frame and the second base frame are provided with transverse through grooves and vertical through grooves arranged along the length direction;

[0005] Both ends of the first base frame are provided with threaded rings in the transverse through slots. One end of the positioning head passes through the vertical through slot on the first base frame and is fixedly connected to the threaded ring. The other end of the positioning head is provided with a fixing frame, which can rotate around the positioning head axis.

[0006] Both ends of the second base frame are provided with threaded rings in the transverse through slots. One end of the positioning head passes through the vertical through slot on the second base frame and is fixedly connected to the threaded ring. The other end of the positioning head is provided with a fixing frame, which can rotate around the positioning head axis.

[0007] The first pressure plate and the second pressure plate are arranged vertically on the fixed frame; the first pressure plate and the second pressure plate have a quadrilateral structure, with the four corners corresponding to the fixed frames at both ends of the first base frame and the second base frame, respectively;

[0008] The fixing frame is equipped with a screw rod, which fixes the first pressure plate, the second pressure plate, the first base frame, and the second base frame.

[0009] Preferably, the first base frame and the second base frame have the same structure and the same length.

[0010] Preferably, the first base frame and the second base frame are hinged at the middle by a central bearing, and both can rotate around the central bearing to open or close.

[0011] Preferably, the first and second pressure plates have the same structure, both arranged in a rhomboid shape, with adjacent sides hinged together.

[0012] Preferably, a cover plate is provided above the first pressure plate, and the cover plate is disposed in the slot of the fixing frame.

[0013] Preferably, the screw passes through the cover plate, the fixing frame, the positioning head and the threaded ring in sequence, and fixes the first pressure plate, the second pressure plate, the first base frame and the second base frame by thread engagement.

[0014] Preferably, a pressure plate clamp is provided between the first pressure plate and the second pressure plate, the pressure plate clamp clamping the stiffening plate to be tested between the first pressure plate and the second pressure plate.

[0015] Preferably, the width of the positioning head is equal to the width of the vertical through slot.

[0016] Preferably, the bottom of the fixing frame is provided with a cylindrical boss, and the top of the positioning head is provided with a circular groove that mates with the cylindrical boss.

[0017] The beneficial effects achieved by this invention are: by designing the base frame, fixing frame, pressure plate and screw, it can adapt to experimental stiffening plates of different thicknesses; by rotating the central bearing of the base frame, it can adapt to experimental stiffening plates of different widths and heights; the design of the pressure block and fixing frame can fix the stiffening plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 yes Figure 1 Top view;

[0020] Figure 3 yes Figure 2 AA section view;

[0021] Figure 4 This is a structural schematic diagram of the pressure plate clamp;

[0022] In the diagram: 11. First base frame; 12. Second base frame; 13. Central bearing; 21. Horizontal through groove; 22. Vertical through groove; 3. Fixing frame; 41. First pressure plate; 42. Second pressure plate; 5. Screw; 6. Cover plate; 7. Pressure plate clamp; 71. Clamping screw; 72. Clamping bracket; 8. Threaded ring; 9. Positioning head. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1-4 As shown, a stiffened plate vibration test bench of the present invention includes a first base frame 11 and a second base frame 12, which are hinged at the middle to form an X-shape; both the first base frame 11 and the second base frame 12 are provided with a transverse through groove 21 and a vertical through groove 22 arranged along the length direction.

[0025] Threaded rings 8 are provided in the transverse through slots 21 at both ends of the first base frame 11. One end of the positioning head 9 passes through the vertical through slot 22 on the first base frame 11 and is fixedly connected to the threaded rings 8. A fixing frame 4 is provided on the other end of the positioning head 9. The fixing frame 4 can rotate around the axial direction of the positioning head 9.

[0026] Threaded rings 8 are provided in the transverse through slots 21 at both ends of the second base frame 12. One end of the positioning head 9 passes through the vertical through slot 22 on the second base frame 12 and is fixedly connected to the threaded rings 8. A fixing frame 4 is provided on the other end of the positioning head 9. The fixing frame 4 can rotate around the positioning head 9 axially.

[0027] The fixing frame 4 is connected to the first base frame 11 or the second base frame 12 via the threaded ring 8 and the positioning head 9.

[0028] The first pressure plate 41 and the second pressure plate 42 are arranged vertically and are mounted on the fixed frame 4. The first pressure plate 41 and the second pressure plate 42 have a quadrilateral structure, with the four corners corresponding to the fixed frames 4 at both ends of the first base frame 11 and the second base frame 12, respectively.

[0029] The fixing frame 4 is equipped with a screw 5, which fixes the first pressure plate 41, the second pressure plate 42, the first base frame 11 and the second base frame 12.

[0030] In this embodiment, the first base frame 11 and the second base frame 12 have the same structure and equal length; the middle of the first base frame 11 and the second base frame 12 are hinged by a central bearing 13, and both can rotate around the central bearing 13 to open or close. This allows them to accommodate stiffening plates of different widths and heights.

[0031] In this embodiment, the first pressure plate 41 and the second pressure plate 42 have the same structure, both arranged in a rhomboid shape, with adjacent sides hinged. A reinforcing plate is clamped between the first pressure plate 41 and the second pressure plate 42. A cover plate 6 is provided above the first pressure plate 41, and the cover plate 6 is disposed within the slot of the fixing frame 4 to cover the first pressure plate 41 and the components below it. Figure 3As shown, the screw 5 passes sequentially through the cover plate 6, the fixing frame 3, the positioning head 9, and the threaded ring 8, fixing the first pressure plate 41, the second pressure plate 42, the first base frame 11, and the second base frame 12 through threaded engagement. By adjusting the screw 5, stiffening plates of different thicknesses can be clamped.

[0032] In this embodiment, a pressure plate clamp 7 is provided between the first pressure plate 41 and the second pressure plate 42. The pressure plate clamp 7 is located in the middle position. The pressure plate clamp 7 includes a clamping screw 71 and a clamping bracket 72. The lower end of the clamping bracket 72 hooks onto the bottom surface of the second pressure plate 42. The lower end of the clamping screw 71 passes through the upper end of the clamping bracket 72 and abuts against the top surface of the first pressure plate 41. By tightening the clamping screw 71, the stiffening plate to be tested is clamped between the first pressure plate 41 and the second pressure plate 42.

[0033] In this embodiment, the width of the positioning head 9 is equal to the width of the vertical through groove 22.

[0034] In this embodiment, the bottom of the fixing frame 3 is provided with a cylindrical boss, and the top of the positioning head 9 is provided with a circular groove that mates with the cylindrical boss. Through the mutual cooperation of the cylindrical boss and the circular groove, the fixing frame 3 is connected to the positioning head 9, and the fixing frame 3 can rotate.

[0035] In use, place the base frame (first base frame 11 and second base frame 12) on a horizontal plane. Determine the included angle between the first base frame 11 and the second base frame 12 and the position of the positioning head 9 according to the measured size of the stiffening plate. Before placing the positioning head 9, first put the threaded ring 8 into the horizontal through groove 21 to prevent the positioning head 9 from falling out of the vertical through groove 22. Then place the fixing frame 3. The cylindrical boss at the bottom of the fixing frame 3 fits and is fixed with the circular groove at the top of the positioning head 9, so that the fixing frame 3 can rotate around the positioning head 9. Place the pressure plate (first pressure plate 41 and second pressure plate 42) at the bottom of the outer groove of the fixing frame 3, and place the stiffening plate between the first pressure plate 41 and the second pressure plate 42. Place the cover plate 6 horizontally into the groove of the fixing frame 3. Finally, pass the screw 5 through the cover plate 6, the fixing frame 3, the positioning head 9 and the threaded ring 8 in sequence, and tighten them to fix the experimental stiffening plate around its perimeter. In order to ensure that the pressure plate has sufficient clamping force, use the pressure plate clamp 8 to clamp the first pressure plate 41 and the second pressure plate 42.

[0036] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this invention is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this invention are defined only by the scope of the claims.

[0037] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention should be considered within the protection scope of the present invention.

Claims

1. A vibration testing bench for stiffened plates, characterized in that: It includes a first base frame and a second base frame, which are hinged at the middle to form an X shape; both the first base frame and the second base frame are provided with a transverse through slot and a vertical through slot arranged along the length direction; Both ends of the first base frame are provided with threaded rings in the transverse through slots. One end of the positioning head passes through the vertical through slot on the first base frame and is fixedly connected to the threaded ring. The other end of the positioning head is provided with a fixing frame, which can rotate around the positioning head axis. Both ends of the second base frame are provided with threaded rings in the transverse through slots. One end of the positioning head passes through the vertical through slot on the second base frame and is fixedly connected to the threaded ring. The other end of the positioning head is provided with a fixing frame, which can rotate around the positioning head axis. The first pressure plate and the second pressure plate are arranged vertically on the fixed frame; the first pressure plate and the second pressure plate have a quadrilateral structure, with the four corners corresponding to the fixed frames at both ends of the first base frame and the second base frame, respectively; The fixing frame is equipped with a screw rod, which fixes the first pressure plate, the second pressure plate, the first base frame, and the second base frame.

2. The stiffened plate vibration test bench according to claim 1, characterized in that: The first and second base frames have the same structure and are of equal length.

3. The stiffened plate vibration test bench according to claim 1, characterized in that: The first and second base frames are hinged at the middle by a central bearing, and both can rotate around the central bearing to open or close.

4. The stiffened plate vibration test bench according to claim 1, characterized in that: The first and second pressure plates have the same structure, both arranged in a rhomboid shape, with adjacent sides hinged together.

5. The stiffened plate vibration test bench according to claim 1, characterized in that: A cover plate is provided above the first pressure plate, and the cover plate is set in the slot of the fixing frame.

6. The stiffened plate vibration test bench according to claim 5, characterized in that: The screw passes through the cover plate, the fixing frame, the positioning head and the threaded ring in sequence, and fixes the first pressure plate, the second pressure plate, the first base frame and the second base frame through thread engagement.

7. The stiffened plate vibration test bench according to claim 1, characterized in that: A pressure plate clamp is provided between the first pressure plate and the second pressure plate, and the pressure plate clamp clamps the stiffening plate to be tested between the first pressure plate and the second pressure plate.

8. The stiffened plate vibration test bench according to claim 1, characterized in that: The width of the positioning head is equal to the width of the vertical through slot.

9. The stiffened plate vibration test bench according to claim 1, characterized in that: The bottom of the fixing frame is provided with a cylindrical boss, and the top of the positioning head is provided with a circular groove that mates with the cylindrical boss.

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