Shearing testing device

Abstract

The utility model relates to the technical field of material mechanics testing, in particular to a shear testing device which comprises two groups of tension components in central symmetry, and each tension component comprises a base and a fixing plate; the base is fixedly connected with other parts; the fixed plate is connected with a to-be-tested material; a universal connector and a connecting block are further arranged between the base and the fixing plate. One end of the universal connector is movably connected with the base in the axial direction, the other end of the universal connector is movably connected with the connecting block in the radial direction, the fixing plate is connected with the side wall of the connecting block through a wedge-shaped structure, and the two ends of the universal connector are connecting rings perpendicular to each other. The utility model has the beneficial effects that by introducing the universal connector structure, the flexible connection between the sample and the clamp is realized, the problem of non-uniform stress in the test process is effectively solved, and the accuracy and reliability of the test result are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material mechanics testing, and particularly relates to a shear testing device. Background Art

[0002] In material mechanics testing, shear testing is an important means to evaluate the shear strength of materials. However, during the testing process of traditional shear testing devices, uneven stress often occurs due to the angular deviation between the specimen and the fixture or the unreasonable fixture design, thus affecting the accuracy and reliability of the test results. This problem is particularly prominent when testing complex-shaped or easily deformable materials. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: to provide a shear testing device that effectively solves the problems in the background art.

[0004] To achieve the above object, the technical solution adopted by the utility model is: a shear testing device, including two sets of tension components that are centrosymmetric, and the tension components include:

[0005] A base, which is fixedly connected to other components;

[0006] A fixing plate, which is connected to the material to be tested;

[0007] Wherein, a universal joint and a connecting block are further provided between the base and the fixing plate; one end of the universal joint is axially movably connected to the base, the other end of the universal joint is radially movably connected to the connecting block, the fixing plate is connected to the side wall of the connecting block through a wedge structure, and both ends of the universal joint are connecting rings perpendicular to each other.

[0008] Further, two mutually parallel mounting rings extend from both sides of the bottom of the base, and through holes are provided on the mounting rings.

[0009] Further, one end of the universal joint is inserted between the two connecting rings and fixedly connected through a connecting pin.

[0010] Further, a fixing ring that is connected to the other end of the universal joint through the connecting pin extends from the upper part of the connecting block.

[0011] Further, connecting pin covers are provided on the outer sides of both the fixing ring and the mounting ring.

[0012] Further, the wedge structure includes a first wedge groove provided on the connecting block and a second wedge block provided on the fixing plate;

[0013] The second wedge block is embedded in the first wedge groove.

[0014] Furthermore, the wedge-shaped structure further includes a first wedge block disposed on the connecting block and a second wedge groove disposed on the fixing plate;

[0015] The first wedge block is embedded in the second wedge groove.

[0016] Furthermore, bolt holes are provided on the side wall of the first wedge block.

[0017] Furthermore, through holes corresponding to the bolt holes are provided on the side wall of the second wedge block.

[0018] Furthermore, the fixing plate is bonded to the material to be tested by glue.

[0019] The beneficial effect of the present utility model is that by introducing the universal joint structure, the flexible connection between the specimen and the fixture is realized, effectively solving the problem of uneven force during the test and improving the accuracy and reliability of the test results. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the shear test device in the embodiment of the present utility model;

[0022] Figure 2 For Figure 1 The enlarged view of part A in

[0023] Figure 3 It is a schematic structural diagram of the universal joint in the embodiment of the present utility model;

[0024] Figure 4 It is a schematic structural diagram of the base in the embodiment of the present utility model;

[0025] Figure 5 It is a schematic connection structure diagram of the base, the universal joint and the connecting block in the embodiment of the present utility model;

[0026] Figure 6 It is a schematic structural diagram of the joint in the embodiment of the present utility model;

[0027] Figure 7 It is a schematic structural diagram of the fixing plate in the embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram of the connection structure between the connector and the fixing plate in the embodiment of the present utility model.

[0029] Reference numerals: 1, tensile assembly; 11, base; 111, mounting ring; 12, fixing plate; 13, universal connector; 131, connecting ring; 14, connecting block; 141, fixing ring; 2, wedge structure; 211, first wedge groove; 212, second wedge groove; 221, first wedge block; 222, second wedge block; 3, connecting pin; 31, connecting pin cover plate; 4, bolt hole. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] As Figures 1 to 8 shown in the shear test device, it includes two sets of tensile assemblies 1 that are centrosymmetric. The tensile assembly 1 includes a base 11 and a fixing plate 12; the base 11 is fixedly connected to other components; the fixing plate 12 is connected to the material to be tested; wherein, a universal connector 13 and a connecting block 14 are further provided between the base 11 and the fixing plate 12; one end of the universal connector 13 is axially movably connected to the base 11, and the other end of the universal connector 13 is radially movably connected to the connecting block 14. The fixing plate 12 is connected to the side wall of the connecting block 14 through a wedge structure 2. The two ends of the universal connector 13 are connecting rings 131 that are perpendicular to each other.

[0034] The implementation process of the present utility model is to connect one end connecting ring of the universal joint to the base, and the connecting ring at the other end to the connector, and fix them with a connecting pin, so that the universal joint can rotate in both the axial and radial directions. Then, the connector and the fixing plate are fixedly connected by using a wedge-shaped structure. Finally, the material to be tested is bonded to the inner side of the fixing plate with glue, and the shear test of the material to be tested is carried out by using a tensile assembly with central symmetry. By introducing the universal joint structure, the present utility model realizes the flexible connection between the specimen and the fixture, effectively solves the problem of uneven stress during the test, and improves the accuracy and reliability of the test results.

[0035] In the present utility model, on both sides of the bottom of the base 11, there extend parallel mounting rings 111, and through holes are provided on the mounting rings 111. The design of the mounting rings 111 increases the contact area between the base and the test platform or the fixing device, thereby improving the stability of the entire test device during the test process, which is crucial for ensuring the accuracy and reliability of the test results. At the same time, due to the design of the mounting rings 111, the rotation of the universal joint 13 in the axial direction is ensured.

[0036] As a preference of the above embodiment, one end of the universal joint 13 is inserted between two connecting rings 131 and connected by a connecting pin 3. Through the clamping action of the two connecting rings 131, the connection between the universal joint 13 and the base (or other connecting components) is more stable, effectively disperses the stress at the connection, and improves the strength and durability of the connection. The design of the universal joint itself allows for multi-directional activities within a certain range. Inserting it between the two connecting rings 131 and fixing it with a connecting pin 3 further ensures the realization of this flexibility, enabling the test device to better adapt to different test conditions and requirements during the test.

[0037] As a preference of the above embodiment, on the upper part of the connecting block 14, there extends a fixing ring 141 which is connected to the other end of the universal joint 13 by a connecting pin 3. The fixing ring 141 provides a stable connection point for the universal joint 13. Through the fastening action of the connecting pin 3, the firm connection between the universal joint 13 and the connecting block 14 is ensured, which helps to reduce loosening or displacement caused by vibration or impact force during the test, thereby improving the accuracy and reliability of the test. At the same time, the rotation of the universal joint in the radial direction is ensured.

[0038] As a preference of the above embodiments, connection pin cover plates 31 are provided on the outer sides of the fixing ring 141 and the mounting ring 111. The connection pin cover plates 31 can closely cover the connection pins 3, preventing them from loosening or falling off due to vibration or external forces during the test, avoiding equipment failures or safety accidents caused by the accidental detachment of the connection pins, and improving the overall safety of the test device. By fixing the connection pins 3, the connection pin cover plates 31 further enhance the connection stability between the fixing ring 141 and the universal joint 13, as well as between the mounting ring 111 and the base 11, ensuring that the test device can maintain a stable connection state during the test and improving the accuracy and reliability of the test.

[0039] In the present utility model, the wedge-shaped structure 2 includes a first wedge-shaped groove 211 provided on the connection block 14 and a second wedge-shaped block 222 provided on the fixing plate 12; the second wedge-shaped block 222 is embedded in the first wedge-shaped groove 211. Through its unique shape design, the wedge-shaped structure 2 enables a self-locking effect to occur when the wedge-shaped block 22 is inserted into the wedge-shaped groove 21. That is, as the wedge-shaped block goes deeper, the frictional force between its inclined surface and the inclined surface of the wedge-shaped groove gradually increases, thereby enhancing the connection stability and strength and ensuring that the connection block 14 and the fixing plate 12 do not loosen or separate during the test.

[0040] As a preference of the above embodiments, the wedge-shaped structure 2 further includes a first wedge-shaped block 221 provided on the connection block 14 and a second wedge-shaped groove 212 provided on the fixing plate 12; the first wedge-shaped block 221 is embedded in the second wedge-shaped groove 212, realizing a two-way wedge locking mechanism. When the connection block 14 is connected to the fixing plate 12, the first wedge-shaped block 221 is not only locked by the second wedge-shaped groove 212, but also the first wedge-shaped groove 211 and the second wedge-shaped block 222 are locked to each other. This two-way locking enhances the connection firmness and safety, preventing loosening or separation caused by unidirectional force or vibration.

[0041] As a preference of the above embodiments, bolt holes 4 are provided on the side wall of the first wedge-shaped block 221. The provision of the bolt holes 4 allows the use of fasteners such as bolts to further fix the first wedge-shaped block 221 to the fixing plate 12. This dual fixing method (i.e., the combination of wedge locking and bolt fastening) significantly enhances the connection firmness, preventing loosening or separation caused by vibration, impact, or other external forces. By bolt fastening, it can be ensured that the first wedge-shaped block 221 is evenly stressed during the connection process, avoiding stress concentration and damage caused by uneven stress.

[0042] Preferably, as in the above embodiment, a through hole corresponding to the bolt hole 4 is provided on the side wall of the second wedge block 222. The provision of the through hole enables the bolt to be accurately aligned with the bolt hole 4 during installation, thereby ensuring the precise connection between the first wedge block 221 and the fixing plate 12, not only improving the connection accuracy but also helping to reduce measurement deviations caused by installation errors.

[0043] In the present utility model, the fixing plate 12 is bonded to the material to be measured with glue. The glue connection can achieve uniform stress distribution, avoid the stress concentration problem that may occur in traditional connection methods, help to extend the service life of the connection, and improve the reliability of the connection.

[0044] Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A shear test device, comprising two sets of tensile components (1) that are centrosymmetric, characterized in that, The tensile component (1) includes: a base (11), which is fixedly connected to other components; a fixing plate (12), which is connected to the material to be tested; wherein, a universal joint (13) and a connecting block (14) are further provided between the base (11) and the fixing plate (12); one end of the universal joint (13) is axially movably connected to the base (11), the other end of the universal joint (13) is radially movably connected to the connecting block (14), the fixing plate (12) is connected to the side wall of the connecting block (14) through a wedge structure (2), and both ends of the universal joint (13) are connecting rings (131) perpendicular to each other.

2. The shear test device according to claim 1, wherein, Two parallel mounting rings (111) extend from both sides of the bottom of the base (11), and through holes are provided on the mounting rings (111).

3. The shear test device according to claim 2, wherein One end of the universal joint (13) is inserted between the two connecting rings (131) and fixedly connected through a connecting pin (3).

4. The shear test device according to claim 3, characterized in that, A fixing ring (141) extending from the upper part of the connecting block (14) is connected to the other end of the universal joint (13) through the connecting pin (3).

5. The shear test device according to claim 4, characterized in that Connecting pin covers (31) are provided on the outer sides of the fixing ring (141) and the mounting ring (111).

6. The shear test device according to claim 1, wherein, The wedge structure (2) includes a first wedge groove (211) provided on the connecting block (14) and a second wedge block (222) provided on the fixing plate (12); The second wedge block (222) is embedded in the first wedge groove (211).

7. The shear test device according to claim 6, characterized in that, The wedge structure (2) further includes a first wedge block (221) provided on the connecting block (14) and a second wedge groove (212) provided on the fixing plate (12); The first wedge block (221) is embedded in the second wedge groove (212).

8. The shear test device according to claim 7, characterized in that, A bolt hole (4) is provided on the side wall of the first wedge block (221).

9. The shear test device according to claim 8, characterized in that, A through hole corresponding to the bolt hole (4) is provided on the side wall of the second wedge block (222).

10. The shear test device according to claim 1, characterized in that, The fixing plate (12) is bonded to the material to be tested with glue.

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