Multifunctional clamp for tension testing machine

Abstract

The utility model discloses a multifunctional clamp for a tension tester, which comprises a first clamping plate and a second clamping plate for clamping a sample, the second clamping plate is detachably connected with the first clamping plate, the inner side wall of the second clamping plate is provided with an arc-shaped groove, the first clamping plate is provided with a first clamping surface, the second clamping plate is provided with a second clamping surface, and the groove forms the second clamping surface. The sample abuts against the first clamping face or the second clamping face. The first clamping surface and the second clamping surface are arranged to form contact surfaces different from the samples, so that the clamp adapts to different types of samples, the replacement frequency of the clamp is reduced, the adaptability of the clamp to the samples in different forms is improved, multifunctional clamping of the clamp is achieved, the second clamping surface is provided with the arc-shaped groove, the spherical samples can be conveniently clamped, and the clamping efficiency is improved. The contact area between the second clamping surface and the spherical sample is increased, so that the sample is prevented from slipping, and the experiment is smoothly carried out.

Description

Technical Field

[0001] The present application belongs to the field of tensile testing machines, and specifically relates to a multifunctional clamp for a tensile testing machine. Background Art

[0002] Tensile testing machine is also known as universal material testing machine. Universal testing machine is a mechanical force testing machine used to perform mechanical property tests such as static load, stretching, compression, bending, shearing, tearing, peeling, etc. on various materials. It is suitable for various physical and mechanical property tests of plastic plates, pipes, special-shaped materials, plastic films, rubber, wires and cables, steel, glass fiber and other materials for material development, physical property testing, teaching research, quality control and other indispensable testing equipment.

[0003] Tensile testing machines are usually equipped with fixtures for holding the test specimens. As an important part of the instrument, the stability of the fixture in holding the test specimens is also an important factor in whether the test can be carried out smoothly and the accuracy of the test results.

[0004] Since the tensile testing machine needs to clamp a variety of different types of specimens, and square specimens and spherical specimens require different fixing methods when clamping to avoid the specimens slipping and causing the experiment to be unable to proceed, it is necessary to replace the fixture to clamp different types of specimens. This method is time-consuming and requires the classification and collection of a variety of fixtures. The fixtures have poor adaptability and single functions. Utility Model Content

[0005] The present application provides a multifunctional clamp for a tensile testing machine, which solves the problem that the clamp can only clamp a certain type of sample and has a single function.

[0006] The technical solution adopted in this application is:

[0007] A multifunctional clamp for a tensile testing machine comprises a first clamping plate and a second clamping plate for clamping a sample, the second clamping plate is detachably connected to the first clamping plate, and an inner side wall of the second clamping plate is provided with an arc-shaped groove, the first clamping plate is provided with a first clamping surface, and the second clamping plate is provided with a second clamping surface, the groove forms the second clamping surface, and the sample abuts against the first clamping surface or the second clamping surface.

[0008] In a preferred implementation of a multifunctional clamp for a tensile testing machine, the clamp further includes a limiting assembly, and the first clamping plate and the second clamping plate are connected via the limiting assembly.

[0009] In a preferred implementation of a multifunctional clamp for a tensile testing machine, the limiting assembly includes a limiting protrusion and a limiting groove adapted to the limiting protrusion, one of the limiting protrusion and the limiting groove is located on the bottom wall of the first clamp, and the other is located on the top wall of the second clamp.

[0010] In a preferred implementation of the multifunctional clamp for a tensile testing machine, the bottom wall of the first clamp is concave to form a limiting groove, and the top wall of the second clamp is convex to form a limiting protrusion adapted to the limiting groove.

[0011] In a preferred implementation of a multifunctional clamp for a tensile testing machine, the limiting assembly includes a slide rail located on a first clamping plate and a slider located on a second clamping plate, and the slider moves along the slide rail.

[0012] In a preferred implementation of a multifunctional clamp for a tensile testing machine, the slide rail is located on the outer wall surface of the first clamping plate, the slider is located on the outer wall surface of the second clamping plate, and an opening is provided at the top end of the slide rail for the slider to access.

[0013] In a preferred implementation of the multifunctional clamp for a tensile testing machine, a shielding section is provided at the bottom of the slide rail, and the shielding section is perpendicular to the slide rail and extends toward the central axis of the first clamping plate.

[0014] In a preferred implementation of a multifunctional clamp for a tensile testing machine, a first clamping plate is provided with a cavity, a slide rail is located on an inner wall of the first clamping plate, and a slide block is located on an outer wall of the second clamping plate.

[0015] In a preferred implementation of the multifunctional clamp for a tensile testing machine, a bottom wall of the first clamp is provided with a slot, and a bottom wall of the second clamp is provided with a protrusion matched with the slot.

[0016] In a preferred implementation of the multifunctional clamp for a tensile testing machine, the groove is made of a flexible material.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0018] (1) The first clamping surface and the second clamping surface are provided to form different contact surfaces with the sample, thereby adapting to different types of samples, reducing the frequency of fixture replacement, improving the adaptability of the fixture to samples of different shapes, and realizing multifunctional clamping of the fixture. The second clamping surface is provided with an arc-shaped groove to facilitate clamping of spherical samples, increase the contact area between the second clamping surface and the spherical sample, avoid sample slippage, and ensure the smooth progress of the experiment.

[0019] (2) The first splint and the second splint are detachably connected by a limiting assembly. On the one hand, it is convenient to install or remove the second splint according to actual needs. On the other hand, if the second splint is damaged, it will not affect the use of the first splint. The limiting assembly realizes a limiting connection for the second splint to avoid position displacement of the second splint.

[0020] (3) The limiting assembly is configured in the form of a limiting protrusion and a limiting groove, which has a simple structure and is easy to implement, with low processing difficulty, and is convenient for connecting and installing the first clamping plate and the second clamping plate. The limiting protrusion and the limiting groove provide a guiding effect for installation during the docking process, which facilitates quick disassembly and assembly.

[0021] (4) A limiting groove is formed on the bottom wall of the first clamping plate, a limiting protrusion is formed on the top wall of the second clamping plate, and the limiting protrusion is inserted into the limiting groove to complete the installation of the first clamping plate and the second clamping plate. The limiting protrusion and the limiting groove are directly formed by the second clamping plate and the first clamping plate respectively, avoiding the addition of additional connecting parts between the first clamping plate and the second clamping plate, reducing the number of installation steps, and being conducive to enhancing the connection stability between the limiting structure and the first clamping plate and the second clamping plate.

[0022] (5) The second clamping plate is connected to the first clamping plate in a limited position by setting a slide rail and a slider, and the second clamping plate can be moved along the first clamping plate when needed, and a radial limit is formed on the contact portion of the second clamping plate with the first clamping plate, thereby improving the positioning accuracy of the second clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a clamp in one embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a clamp in another embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of a clamp in another embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 1-first clamping plate, 11-first clamping surface, 12-cavity, 13-slot, 2-second clamping plate, 21-groove, 22-protrusion, 3-limiting protrusion, 4-limiting groove, 5-slide rail, 6-slider, 7-blocking section. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0031] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0034] The present application provides a multifunctional clamp for a tensile testing machine, such as Figures 1 to 3 As shown, it includes a first clamping plate 1 and a second clamping plate 2 for clamping the sample, the second clamping plate 2 is detachably connected to the first clamping plate 1, and the inner side wall of the second clamping plate 2 is provided with an arc-shaped groove 21, the first clamping plate 1 is provided with a first clamping surface 11, the second clamping plate 2 is provided with a second clamping surface, the groove 21 forms the second clamping surface, and the sample abuts against the first clamping surface 11 or the second clamping surface.

[0035] The first clamping surface 11 and the second clamping surface are provided to form different contact surfaces with the sample, thereby adapting to different types of samples, reducing the frequency of fixture replacement, improving the adaptability of the fixture to samples of different forms, and realizing multifunctional clamping of the fixture. The second clamping surface is provided with an arc groove 21, which is convenient for clamping spherical samples, increasing the contact area between the second clamping surface and the spherical sample, avoiding the sample from slipping, and ensuring the smooth progress of the experiment.

[0036] In a preferred implementation of a multifunctional clamp for a tensile testing machine, the clamp further includes a limiting assembly, and the first clamping plate 1 and the second clamping plate 2 are connected via the limiting assembly.

[0037] The first splint 1 and the second splint 2 are detachably connected by the limiting assembly. On the one hand, it is convenient to install or disassemble the second splint 2 according to actual needs. On the other hand, if the second splint 2 is damaged, it will not affect the use of the first splint 1. The limiting assembly realizes a limiting connection for the second splint 2 to avoid position displacement of the second splint 2.

[0038] It should be noted that the setting method of the limit assembly can be any one of the following embodiments:

[0039] Embodiment 1:

[0040] like Figure 1 As shown, the limiting assembly includes a limiting protrusion 3 and a limiting groove 4 matched with the limiting protrusion 3 , one of the limiting protrusion 3 and the limiting groove 4 is located on the bottom wall of the first clamping plate 1 , and the other is located on the top wall of the second clamping plate 2 .

[0041] The limiting assembly is configured in the form of a limiting protrusion 3 and a limiting groove 4, which has a simple structure and is easy to implement, with low processing difficulty, and is convenient for connecting and installing the first clamping plate 1 and the second clamping plate 2. The limiting protrusion 3 and the limiting groove 4 provide a guiding effect for installation during the docking process, which facilitates quick disassembly and assembly.

[0042] Preferably, the bottom wall of the first clamping plate 1 is concave to form a limiting groove 4 , and the top wall protrusion 22 of the second clamping plate 2 forms a limiting protrusion 3 adapted to the limiting groove 4 .

[0043] By forming a limiting groove 4 on the bottom wall of the first clamping plate 1, forming a limiting protrusion 3 on the top wall of the second clamping plate 2, and inserting the limiting protrusion 3 into the limiting groove 4, the installation of the first clamping plate 1 and the second clamping plate 2 is completed. The limiting protrusion 3 and the limiting groove 4 are directly formed by the second clamping plate 2 and the first clamping plate 1 respectively, avoiding the addition of additional connecting parts between the first clamping plate 1 and the second clamping plate 2, reducing the installation steps, and being beneficial to enhancing the connection stability between the limiting structure and the first clamping plate 1 and the second clamping plate 2.

[0044] Embodiment 2:

[0045] The limiting assembly includes a slide rail 5 located on the first clamping plate 1 and a slider 6 located on the second clamping plate 2 , and the slider 6 moves along the slide rail 5 .

[0046] The second clamping plate 2 is connected to the first clamping plate 1 by setting the slide rail 5 and the slider 6, and the second clamping plate 2 can move along the first clamping plate 1 when needed. At the same time, radial limitation is formed on the contact part of the second clamping plate 2 and the first clamping plate 1, thereby improving the positioning accuracy of the second clamping plate 2.

[0047] As an implementation method under this embodiment: Figure 2 As shown, the slide rail 5 is located on the outer wall surface of the first clamping plate 1, the slider 6 is located on the outer wall surface of the second clamping plate 2, and an opening is provided at the top end of the slide rail 5 for the slider 6 to be inserted.

[0048] The slide rail 5 and the slider 6 are respectively arranged on the outer wall surface of the first clamping plate 1 and the outer wall surface of the second clamping plate 2, so as to facilitate observation of the connection between the second clamping plate 2 and the first clamping plate 1, and a locking structure can be set to lock the slider 6 at any position to facilitate adjustment of the position of the second clamping plate 2.

[0049] In a preferred implementation of the multifunctional clamp for a tensile testing machine, a shielding section 7 is provided at the bottom of the slide rail 5 , and the shielding section 7 is perpendicular to the slide rail 5 and extends toward the central axis of the first clamping plate 1 .

[0050] When the slider 6 slides to the bottom of the slide rail 5 , the blocking section 7 limits the slider 6 , and at the same time strengthens the supporting effect of the slider 6 , that is, strengthens the supporting effect of the second clamping plate 2 , thereby improving the stability of the second clamping plate 2 .

[0051] As another implementation method under this embodiment: Figure 3 As shown, the first clamping plate 1 is provided with a cavity 12 , the slide rail 5 is located on the inner wall of the first clamping plate 1 , and the slide block 6 is located on the outer wall of the second clamping plate 2 .

[0052] The slide block 6 moves along the slide rail 5, so that the second clamping plate 2 moves vertically in the cavity 12, which facilitates the folding and lowering of the second clamping plate 2, and rationally utilizes the space to realize the multifunctionality of the clamp.

[0053] Furthermore, a clamping groove 13 is provided on the bottom wall of the first clamping plate 1 , and a protrusion 22 adapted to the clamping groove 13 is provided on the bottom wall of the second clamping plate 2 .

[0054] By providing the slot 13 and the protrusion 22, when the protrusion 22 is engaged with the slot 13, the second clamping plate 2 is located in the cavity 12, thereby improving the compactness of the overall structure, reducing space occupation, and improving the integrity of the first clamping plate 1 and the second clamping plate 2, so as to facilitate the overall storage of the clamp. It can be understood that in this embodiment, the radial width of the second clamping plate 2 is smaller than the radial width of the first clamping plate 1.

[0055] In one embodiment, the groove 21 is made of flexible material.

[0056] The groove 21 is made of flexible material, which, on the one hand, avoids damage to the sample and affects the accuracy of the experimental results; on the other hand, the groove 21 can be slightly deformed according to the shape of the sample and fit the sample better to better clamp the sample and improve the clamping stability.

[0057] It should be noted that the first clamp 1 in the present application can adopt a clamp in the prior art as the first clamp 1, and the second clamp 2 can be connected to the clamp in the prior art at a suitable position.

[0058] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0059] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0060] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A multifunctional fixture for a tensile testing machine, characterized in that: It comprises a first clamping plate and a second clamping plate for clamping a sample, wherein the second clamping plate is detachably connected to the first clamping plate, and an inner side wall of the second clamping plate is provided with an arc-shaped groove, the first clamping plate is provided with a first clamping surface, and the second clamping plate is provided with a second clamping surface, the groove forms the second clamping surface, and the sample abuts against the first clamping surface or the second clamping surface.

2. A multifunctional clamp for a tensile testing machine according to claim 1, characterized in that: The clamp further comprises a limiting assembly, and the first clamping plate and the second clamping plate are connected via the limiting assembly.

3. A multifunctional clamp for a tensile testing machine according to claim 2, characterized in that: The limiting assembly includes a limiting protrusion and a limiting groove matched with the limiting protrusion, one of the limiting protrusion and the limiting groove is located on the bottom wall of the first clamping plate, and the other is located on the top wall of the second clamping plate.

4. A multifunctional clamp for a tensile testing machine according to claim 3, characterized in that: The bottom wall of the first clamping plate is concave to form the limiting groove, and the top wall of the second clamping plate is convex to form the limiting protrusion matched with the limiting groove.

5. The multifunctional clamp for a tensile testing machine according to claim 2, characterized in that: The limiting assembly includes a slide rail located on the first clamping plate and a slider located on the second clamping plate, and the slider moves along the slide rail.

6. A multifunctional clamp for a tensile testing machine according to claim 5, characterized in that: The slide rail is located on the outer wall surface of the first clamping plate, the slider is located on the outer wall surface of the second clamping plate, and the top end of the slide rail is provided with an opening for the slider to be inserted.

7. A multifunctional clamp for a tensile testing machine according to claim 6, characterized in that: A shielding section is provided at the bottom of the slide rail, and the shielding section is perpendicular to the slide rail and extends toward the central axis of the first clamping plate.

8. The multifunctional clamp for a tensile testing machine according to claim 5, characterized in that: The first clamping plate is provided with a cavity, the slide rail is located on the inner wall of the first clamping plate, and the slide block is located on the outer wall of the second clamping plate.

9. The multifunctional clamp for a tensile testing machine according to claim 8, characterized in that: The bottom wall of the first clamping plate is provided with a clamping slot, and the bottom wall of the second clamping plate is provided with a protrusion matched with the clamping slot.

10. The multifunctional clamp for a tensile testing machine according to claim 1, characterized in that: The groove is made of flexible material.

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