Plate fixtures suitable for tests with different boundary conditions

Abstract

The present invention relates to a plate-type fixture suitable for testing different boundary conditions. The plate-type fixture includes a base plate, a first U-shaped groove, a second U-shaped groove, a third U-shaped groove, a fourth U-shaped groove, and a compression strip. The first U-shaped groove, the second U-shaped groove, the third U-shaped groove, and the fourth U-shaped groove are perpendicular to each other and arranged in four directions. Compression bolts pass through the first U-shaped groove, the second U-shaped groove, the third U-shaped groove, and the fourth U-shaped groove, respectively, to compress the compression strips in the corresponding U-shaped grooves. The present invention utilizes a slider to move the U-shaped groove to a specified position on the base plate, and then uses a fixing bolt to fix it to the base plate. Then, the compression bolt on the U-shaped groove is screwed to push the compression strip in the groove to clamp the plate. When using the fixture to clamp the plate, it is convenient, fast, and easy to operate. During the test, the compression strip can be flipped according to specific needs to achieve different boundary conditions on each side of the plate. The present invention can conduct test research on plates of different sizes by moving the fixture horizontally and vertically.

Description

Technical Field

[0001] The invention relates to the field of plate-type fixtures, and in particular to a plate-type fixture suitable for tests under different boundary conditions. Background Art

[0002] In construction projects, various parameters of panel structures are typically tested before use to ensure their safety and stability. However, due to the complexities of actual projects, panel sizes and boundary conditions vary. Testing panels requires changing to appropriately sized fixed or simply supported fixtures, a cumbersome and inconvenient process that significantly reduces testing efficiency. Testing large quantities of different panels is even more time-consuming and labor-intensive. Summary of the Invention

[0003] To solve the above problems, the present invention provides a plate-type fixture suitable for testing different boundary conditions, which can conveniently and quickly test plates with different boundary conditions and is applicable to plates of most sizes.

[0004] The technical solution adopted by the present invention is: a plate-type fixture suitable for tests under different boundary conditions, characterized in that: it comprises a bottom plate, a first U-shaped groove, a second U-shaped groove, a third U-shaped groove, a fourth U-shaped groove and a compression strip, the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are perpendicular to each other and arranged in four directions, the first U-shaped groove is opposite to the opening of the third U-shaped groove, and the second U-shaped groove is opposite to the opening of the fourth U-shaped groove; the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are all arranged on the bottom plate and can slide linearly on the bottom plate; a pair of compression strips for clamping the test piece are each provided in the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove; the compression bolts pass through the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove respectively to compress the compression strips in the corresponding U-shaped grooves;

[0005] A pair of the compression strips includes two compression strips, one side of the compression strip is provided with a semicircular arc protrusion, and the other side is a flat surface; when the flat surfaces of the two compression strips are opposite to each other, the test piece is clamped by the flat surfaces to achieve a fixed support boundary condition; when the two compression strips are provided with semicircular arc protrusions facing each other, the test piece is clamped by the semicircular arc protrusion to achieve a simply supported boundary condition.

[0006] Preferably, the bottom plate is a U-shaped cube, and the threaded holes on the surface are blind holes and are arranged orthogonally.

[0007] Preferably, a bottom plate slide groove is provided on the bottom plate, and the bottoms of the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are all provided with sliders corresponding to the bottom plate slide groove.

[0008] Preferably, the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are fixed to the base plate by bolts.

[0009] Preferably, the lower surfaces of the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are all provided with semi-cylindrical grooves corresponding to the semi-circular arc protrusions.

[0010] The present invention achieves the beneficial effects of employing a simple clamping device, utilizing a slider to move the U-shaped groove to a desired position on the base plate, securing it to the base plate with fixing bolts, and then tightening the clamping bolts on the U-shaped groove to push the clamping strips within the groove, thereby clamping the plate. Using the clamp to clamp the plate is quick and convenient, with simple operation, making it ideal for testing plate components. Furthermore, during testing, the clamping strips can be flipped to achieve different boundary conditions on each side of the plate, depending on specific needs. Furthermore, the clamp is highly versatile, enabling testing and research on plates of varying sizes through lateral and longitudinal movement of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 It is a structural diagram of the U-shaped groove;

[0013] Figure 3 It is a schematic diagram of the connection between the U-shaped groove and the bottom plate;

[0014] Figure 4 Schematic diagram of the compression strip under simply supported conditions in the U-shaped groove;

[0015] Figure 5 Schematic diagram of the compression strip under clamped conditions in a U-shaped groove;

[0016] In the figure: 1. bottom plate; 11. bottom plate slide; 12. threaded hole; 2. U-shaped groove (2a. first U-shaped groove, 2b. second U-shaped groove, 2c. third U-shaped groove, 2d. fourth U-shaped groove); 21. bottom slide; 3. slider; 4. fixing bolt; 5. clamping bolt; 6. clamping strip. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] like Figure 1-5As shown, a plate-type fixture suitable for tests under different boundary conditions of the present invention includes a bottom plate 1, a U-shaped groove 2 and a pressing strip 6. There are four U-shaped grooves 2, namely the first U-shaped groove 2a, the second U-shaped groove 2b, the third U-shaped groove 2c, and the fourth U-shaped groove 2d. The first U-shaped groove 2a, the second U-shaped groove 2b, the third U-shaped groove 2c, and the fourth U-shaped groove 2d are perpendicular to each other and arranged in four directions. Among them, the first U-shaped groove 2a and the third U-shaped groove 2c are opposite to each other, and the second U-shaped groove 2b and the fourth U-shaped groove 2d are opposite to each other. The openings are relative to each other; the first U-shaped groove 2a, the second U-shaped groove 2b, the third U-shaped groove 2c, and the fourth U-shaped groove 2d are all arranged on the base plate 1 and can slide linearly on the base plate 1; the first U-shaped groove 2a, the second U-shaped groove 2b, the third U-shaped groove 2c, and the fourth U-shaped groove 2d are each provided with a pair of clamping strips 6 for clamping the test piece, and the clamping screws 5 pass through the first U-shaped groove 2a, the second U-shaped groove 2b, the third U-shaped groove 2c, and the fourth U-shaped groove 2d respectively to tighten the clamping strips 6 in the corresponding U-shaped grooves 2.

[0019] A pair of compression strips 6 includes two compression strips, one side of the compression strip 6 is provided with a semicircular arc protrusion, and the other side is a flat surface; when the flat surfaces of the two compression strips 6 are opposite to each other, the test piece is clamped by the flat surfaces (surface contact) to achieve the fixed support boundary condition; when the two compression strips 6 are provided with semicircular arc protrusions facing each other, the test piece is clamped by the semicircular arc protrusions (line contact) to achieve the simply supported boundary condition.

[0020] In this embodiment, a plurality of orthogonally arranged threaded holes 12 are provided on the upper surface of the base plate 1. The base plate 1 is a U-shaped rectangular parallelepiped. The threaded holes 12 on the upper surface cover the entire surface except for the position of the base plate slide groove 11. The threaded holes 12 are arranged perpendicular to the upper and lower surfaces of the base plate 1. The arrangement corresponds to the edge of the plate and is arranged along the length and width of the base plate 1. The threaded holes 12 can be equidistant or unequally spaced, and the number in each row can be few or more. In this embodiment, there are 18 in each row, and they are equidistant in the length and width.

[0021] In this embodiment, there are four bottom plate sliding grooves 11 on the upper surface of the bottom plate 1, which extend from the four outer walls to the middle hollow position respectively. The cross-section of the bottom plate sliding groove 11 is dovetail-shaped. After the slider 3 is embedded, it can only move in its extension direction, which just forms the four directions of a rectangle.

[0022] In this embodiment, the first U-shaped groove 2a, the second U-shaped groove 2b, the third U-shaped groove 2c, and the fourth U-shaped groove 2d have the same structure. One of the U-shaped grooves is used as an example. The U-shaped groove 2 is connected to the top of the base plate 1 through the bottom slide 21 and the slider 3. There are three rows of threaded holes on the upper surface. The two inner rows of threaded holes only pass through the upper wing, and the outer row of threaded holes runs through the entire U-shaped groove 2. There is a semi-cylindrical notch on the lower surface of the groove, the size of which matches the semi-cylindrical notch on the clamping strip 6. The fixing bolt 4 can be matched with the threaded hole 12 on the base plate 1 through the threaded through hole of the U-shaped groove 2 to fix the U-shaped groove 2 to the base plate 1. The clamping bolt 5 contacts the clamping strip 6 through the two inner rows of threaded holes of the U-shaped groove 2. Screwing the clamping bolt 5 can adjust the tightness of the plate.

[0023] In this embodiment, the U-shaped groove 2 can be freely moved in the length and width directions of the base plate 1 along the base plate slide groove 11 through the slider 3. The threaded through hole on the outer side of the upper surface of the U-shaped groove 2 matches the threaded hole 12 on the base plate 1. The fixing bolt 4 can be used to fix the position of the U-shaped groove 2 on the base plate 1 to improve the stability of the clamp. The two inner rows of threaded holes are arranged equidistantly along the length direction. The number of threaded holes in each row can be appropriately selected. The distance between the two rows of threaded holes should be greater than the diameter of the semi-cylinder on the surface of the clamping strip 6 to prevent the clamping bolt 5 from being unable to contact the clamping strip 6 to clamp the plate.

[0024] In this embodiment, the clamping strips 6 are disposed within the U-shaped groove 2, with two identical strips forming a group. These strips have the same length as the U-shaped groove 2 and a cross-sectional shape that is a combination of a rectangle and a semicircle, allowing the panel to be clamped between the clamping strips 6. The clamping strips 6 have a flat surface on one side and a semicircular raised surface on the other. They can be placed on both sides and can contact and clamp the edge of the panel, allowing the raised surface to achieve a simply supported boundary condition, or they can be flipped over and used with the flat surface to achieve a clamped boundary condition.

[0025] When using a clamp to clamp a panel, first place the slider 3 in the bottom groove 21 of the U-shaped groove 2, then place the slider 3 and the U-shaped groove 2 into the bottom plate groove 11 on the surface of the bottom plate 1. After the bottom plate 1 is installed on all four sides, place the panel in the center of the bottom plate 1, move the four U-shaped grooves 2 to the designated positions, that is, the edge positions of the panel, and then place the panel into the clamping strip 6. Then, tighten the fixing bolts 4 on the U-shaped groove 2 to fix it to the bottom plate 1. Finally, tighten the clamping bolt 5 above the U-shaped groove 2 and move it downward so that the clamping strip 6 is in close contact with the panel, so that the panel is fixed to the bottom plate 1.

[0026] It should be noted that the description of the above technical solutions is illustrative only. This specification may be embodied in various forms and should not be construed as limiting the technical solutions set forth herein. Rather, these descriptions are provided to ensure that the disclosure of the present invention is thorough and complete and to fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of the present invention are limited only by the scope of the claims.

[0027] 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 is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. A plate-type fixture suitable for tests under different boundary conditions, characterized by: The invention relates to a base plate, a first U-shaped groove, a second U-shaped groove, a third U-shaped groove, a fourth U-shaped groove and a compression strip, wherein the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are perpendicular to each other and arranged in four directions, the first U-shaped groove is opposite to the opening of the third U-shaped groove, and the second U-shaped groove is opposite to the opening of the fourth U-shaped groove; the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are all arranged on the base plate and can slide linearly on the base plate; a pair of compression strips for clamping the test piece are provided in the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove; the compression bolts pass through the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove respectively to compress the compression strips in the corresponding U-shaped grooves; The pair of compression strips includes two compression strips, one side of the compression strips is provided with a semicircular arc protrusion, and the other side is a flat surface; when the flat surfaces of the two compression strips face each other, the flat surfaces are used to clamp the test piece to achieve a fixed boundary condition; when the two compression strips have semicircular arc protrusions facing each other, the semicircular arc protrusions are used to clamp the test piece to achieve a simply supported boundary condition; The bottom plate is a U-shaped cube, and the threaded holes on the surface are blind holes and arranged orthogonally; The bottom plate is provided with a bottom plate slide groove, and the bottom of the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are all provided with sliders corresponding to the bottom plate slide groove; the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are fixed to the bottom plate by bolts; the lower surface of the first U-shaped groove, the second U-shaped groove, the third U-shaped groove and the fourth U-shaped groove are all provided with semi-cylindrical grooves corresponding to the semi-circular arc protrusions.

Images