CN219434512U - Whale clamp and tensile test device - Google Patents

Abstract

The utility model belongs to the field of tensile test device machinery, and provides a whale clamp and a tensile test device. The whale clamp comprises the same ends of the upper clamp and the lower clamp which are connected through a movable piece so as to realize the opening and closing movement of the upper clamp and the lower clamp; the upper clamp comprises an upper clamping plate, upper needle-shaped teeth and upper saw teeth, the upper needle-shaped teeth are arranged at one end of the upper clamping plate, which is far away from the movable piece, and the upper saw teeth are fixed on the upper clamping plate and are distributed between the movable piece and the upper needle-shaped teeth; the lower clamp comprises a lower clamping plate, lower needle-shaped teeth and lower saw teeth, wherein the lower needle-shaped teeth are arranged at one end, far away from the movable piece, of the lower clamping plate, and the lower saw teeth are fixed on the lower clamping plate and are distributed between the movable piece and the lower needle-shaped teeth. The operation steps of clamping the sample in the tensile test are greatly simplified, and tools required for operation are simple.

Description

Whale clamp and tensile test device

Technical Field

The utility model belongs to the field of tensile test device machinery, and particularly relates to a whale clamp and a tensile test device.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The tensile test is a test for measuring a series of mechanical properties of a material under the action of tensile load, is one of basic methods for testing the mechanical properties of the biological material, and is mainly used for researching the relation between stress and strain of the biological material in the field of biomechanics so as to measure a series of mechanical indexes of the material. The tensile test is mainly divided into uniaxial stretching, which means that a specimen is stretched in one direction by a uniaxial stretching force, and biaxial stretching, which means that a specimen is stretched in two directions by a biaxial stretching force, which are generally orthogonal to each other. The uniaxial stretching of the biological material has a larger limitation, because the biological material is not subjected to unidirectional stretching force in a normal physiological state, the unidirectional stretching cannot study the coupling effect of the circumferential direction and the radial direction of the biological material, and the stress concentration phenomenon is easy to be generated when the material is deformed greatly, so that larger error is caused. In order to obtain the biomechanical properties of the material more accurately, the experimental conditions are more similar to the real conditions, and biaxial stretching is required.

The stretching clamp of the stretcher can be generally divided into a wedge-shaped clamp (a clamp adopting an inclined plane locking principle structure), a butt clamp (a clamp adopting a single-sided or double-sided thread jacking principle structure), a winding clamp (a clamp adopting a winding mode for locking the sample), an eccentric clamp (a clamp adopting an eccentric locking principle structure), a lever clamp (a clamp adopting a lever force amplifying principle structure), a shoulder clamp (a clamp suitable for a shoulder sample), a bolt clamp (a clamp suitable for testing thread strength such as a bolt, a screw and a stud), a 90-degree stripping clamp (a clamp suitable for vertically stripping the sample) and the like according to different samples and test force sizes. For samples such as metal samples and the like which need large test force, an inclined surface clamping structure is generally adopted, and for biological soft tissue materials, the existing mature stretching clamp mainly comprises right-angle needle clamping and fishhook clamping.

However, the inventor finds that the existing right-angle needle type clamping and fishhook type clamping mainly have the problems of difficult operation, complicated process, more tools, longer operation time and uneven hook distribution, each needle of the separated type clamping means needs to be loaded independently, the requirement on an operator is extremely high, the influence of human factors on experimental results is large, the sample loading is extremely easy to cause incapability of flattening and uniform stress, and the mechanical index value is extremely deviated.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides a whale clamp and a biaxial tensile test device, which greatly simplify the operation steps of clamping a sample in a tensile test and simplify tools required for operation.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

in a first aspect the utility model provides a whale clamp.

In one or more embodiments, a whale hair clamp, comprising: an upper clamp and a lower clamp which are matched with each other;

the same ends of the upper clamp and the lower clamp are connected through a movable piece so as to realize the opening and closing movement of the upper clamp and the lower clamp;

the upper clamp comprises an upper clamping plate, upper needle-shaped teeth and upper saw teeth, the upper needle-shaped teeth are arranged at one end of the upper clamping plate, which is far away from the movable piece, and the upper saw teeth are fixed on the upper clamping plate and are distributed between the movable piece and the upper needle-shaped teeth;

the lower clamp comprises a lower clamping plate, lower needle-shaped teeth and lower saw teeth, wherein the lower needle-shaped teeth are arranged at one end, far away from the movable piece, of the lower clamping plate, and the lower saw teeth are fixed on the lower clamping plate and are distributed between the movable piece and the lower needle-shaped teeth.

As an embodiment, the upper needle teeth and the lower needle teeth are staggered.

As one embodiment, the upper needle teeth and the lower needle teeth are oppositely disposed.

As an embodiment, the upper saw teeth and the lower saw teeth are staggered.

As one embodiment, the upper serrations and the lower serrations are oppositely disposed.

As an embodiment, the movable member is a screw element.

As an embodiment, the movable member is a spring element.

As one embodiment, the upper clamp is connected to the movable member through a first boss.

As one embodiment, the lower clamp is connected to the movable member through a second boss.

A second aspect of the utility model provides a tensile test apparatus.

In one or more embodiments, a tensile test device includes a whale fixture as described above.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the upper clamp and the lower clamp with needle-shaped teeth and saw teeth are matched with each other, and one end of a sample to be stretched is clamped through opening and closing movement, so that the operation steps of clamping the sample in a tensile test are greatly simplified, and tools required for operation are simple.

Meanwhile, for the problem that the right-angle needle needs an operator to load each needle independently, the whale clamp disclosed by the utility model can be directly used without being loaded independently, and a plurality of needles are clamped simultaneously, so that the influence of human factors is greatly reduced, the problem of uneven hook clearance in sample clamping operation is solved, a sample can be installed more quickly, and the time of exposing the sample to a non-physiological environment is reduced.

Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a front view of a whale clip according to an embodiment of the utility model;

FIG. 2 is a left side view of a whale clip according to an embodiment of the utility model;

fig. 3 is a schematic view showing an expanded state of the whale clip according to the embodiment of the present utility model.

Wherein, 1 is needle-shaped teeth; 2 lower needle teeth; 3, upper clamping plates; 4, a lower clamping plate; 5, sawtooth is arranged on the upper surface; 6, sawtooth is arranged below the lower part; 7 a movable piece.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

In the present utility model, terms such as "upper", "lower", and the like, refer to an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, and are merely relational terms, which are merely provided for convenience in describing the structural relationships of the respective components or elements of the present utility model, and do not denote any one of the components or elements of the present utility model, and are not to be construed as limiting the present utility model.

According to the figures 1, 2 and 3, there is provided a whale clamp, comprising in particular an upper clamp and a lower clamp; the same ends of the upper clamp and the lower clamp are connected through a movable piece 7 so as to realize the opening and closing movement of the upper clamp and the lower clamp;

the upper clamp comprises an upper clamping plate 3, upper needle-shaped teeth 1 and upper saw teeth 5, wherein the upper needle-shaped teeth 1 are arranged at one end of the upper clamping plate 3, which is far away from the movable piece 7, and the upper saw teeth are fixed on the upper clamping plate 3 and are distributed between the movable piece 7 and the upper needle-shaped teeth 1;

the lower clamp comprises a lower clamping plate 4, lower needle-shaped teeth 2 and lower saw teeth 6, wherein the lower needle-shaped teeth 2 are arranged at one end, far away from the movable piece 7, of the lower clamping plate 4, and the lower saw teeth 6 are fixed on the lower clamping plate 4 and are distributed between the movable piece 7 and the lower needle-shaped teeth 2.

Wherein, the upper needle-shaped teeth 1 and the lower needle-shaped teeth 2 are generally made of metal materials. The materials of the upper needle teeth 1 and the lower needle teeth 2 can be specifically set according to practical situations by those skilled in the art.

In this embodiment, the upper and lower serrations 5, 6 are used to prevent the upper and lower needle teeth 1, 2 from contacting the upper or lower edge when the clamp is closed.

In some embodiments, the upper needle teeth and the lower needle teeth are staggered.

The problem of uneven hook clearance in sample clamping operation can be solved, the sample can be installed rapidly, the time of exposing the sample to a non-physiological environment is shortened, and great help is provided for the feasibility of the whole experiment and the improvement of the accuracy of experimental results.

In other embodiments, the upper needle teeth and the lower needle teeth are oppositely disposed.

In some embodiments, the upper serrations and the lower serrations are staggered. The problem of uneven hook clearance in sample clamping operation can be solved, the sample can be installed rapidly, the time of exposing the sample to a non-physiological environment is shortened, and great help is provided for the feasibility of the whole experiment and the improvement of the accuracy of experimental results.

In other embodiments, the upper serrations and the lower serrations are oppositely disposed.

Here, the movable member is a screw member, a spring member, or the like. The specific structure of the movable member can be specifically set by those skilled in the art according to the actual circumstances.

In fig. 1-3, it can be seen that the upper clamp is connected to the moveable member 7 by a first boss. The lower clamp is connected with the movable piece 7 through a second protruding part.

In one or more embodiments, there is also provided a tensile test device comprising a whale fixture as described above.

Compared with the existing biological material clamping component, the whale clamp of the embodiment only needs two steps to install a sample: 1. one end of the sample was held with forceps. 2. The other side of the sample was clamped using whale clamps. The above two steps are repeated for each change of sample until the sample is completely clamped.

The whale clamp of the embodiment greatly simplifies the operation steps of clamping a sample in a tensile test, and the operation needs simple tools. Meanwhile, for the problem that the right-angle needle needs an operator to independently load each needle, the whale is clamped, independent loading is not needed, the right-angle needle can be directly used, and the plurality of needles are simultaneously clamped, so that the influence of human factors is greatly reduced. The scheme can solve the problem of uneven hook clearance in sample clamping operation, can install samples rapidly, and reduces the time of exposing the samples to non-physiological environments. Thus, the feasibility of the whole experiment and the improvement of the accuracy of the experimental result are greatly facilitated.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A whale fixture, comprising: an upper clamp and a lower clamp which are matched with each other;

the same ends of the upper clamp and the lower clamp are connected through a movable piece so as to realize the opening and closing movement of the upper clamp and the lower clamp;

the upper clamp comprises an upper clamping plate, upper needle-shaped teeth and upper saw teeth, the upper needle-shaped teeth are arranged at one end of the upper clamping plate, which is far away from the movable piece, and the upper saw teeth are fixed on the upper clamping plate and are distributed between the movable piece and the upper needle-shaped teeth;

the lower clamp comprises a lower clamping plate, lower needle-shaped teeth and lower saw teeth, wherein the lower needle-shaped teeth are arranged at one end, far away from the movable piece, of the lower clamping plate, and the lower saw teeth are fixed on the lower clamping plate and are distributed between the movable piece and the lower needle-shaped teeth.

2. The whale hair clamp of claim 1, wherein the upper needle teeth and the lower needle teeth are staggered.

3. The whale hair clamp of claim 1, wherein the upper needle teeth and the lower needle teeth are oppositely disposed.

4. A whale holder according to claim 1, 2 or 3 wherein the upper serrations and the lower serrations are staggered.

5. A whale holder according to claim 1, 2 or 3, wherein the upper and lower serrations are oppositely disposed.

6. A whale holder according to claim 1, wherein the movable member is a screw element.

7. A whale hair clamp according to claim 1, wherein the movable member is a spring element.

8. The whale hair clamp of claim 1, wherein the upper clamp is connected to the movable member by a first boss.

9. A whale holder according to claim 1 or 8, wherein the lower holder is connected to the movable member by means of a second boss.

10. A tensile testing device comprising a whale fixture according to any one of claims 1-9.