CN112362499A

CN112362499A - Lateral bending clamp

Info

Publication number: CN112362499A
Application number: CN202011200205.6A
Authority: CN
Inventors: 黄河源; 张宣佳; 王东; 侯赤; 赵美英; 任晓洋
Original assignee: Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-12

Abstract

The invention relates to the field of strength testing equipment for lateral bending tests, in particular to a lateral bending clamp which comprises an L-shaped base, a first fixing piece, a second fixing piece and a round bar, wherein the first fixing piece and the second fixing piece are arranged on the bottom edge of the L-shaped base, the round bar is used for realizing the loading of a test piece, the test piece is clamped on the bottom edge of the L-shaped base through the first fixing piece and the second fixing piece, and the loading axis of the round bar is superposed with the center plane of the bottom edge of the L-shaped base. The invention can be directly clamped on a universal testing machine, can effectively prevent looseness and slippage, bears larger lateral bending test load, meets the sample size in a certain range, enlarges the test range, clamps according to the specific size of the sample, and increases the universality of the clamp.

Description

Lateral bending clamp

Technical Field

The invention relates to the field of lateral bending test strength testing equipment, in particular to a lateral bending clamp.

Background

Measuring the strength performance of the material is one of the basic test methods for testing the mechanical performance of the material, such as the bonding strength between layers of the composite material and the glued joint surface of the plate; in the current strength test, the types of lateral bending clamps applied to a universal testing machine are less, in the prior art, a sample for lateral bending is easy to loosen and slide, and due to the existence of bending moment, when a large load is acted, the root part of the test clamp has insufficient strength and generates micro deformation; therefore, the test result is inaccurate, and the reliability of the lateral bending test is reduced.

Disclosure of Invention

In order to solve the problems, the invention provides a lateral bending clamp which can be directly clamped on a universal testing machine, can effectively prevent looseness and slippage, bears larger lateral bending test load, meets the requirement of sample size in a certain range and expands the test range.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a lateral bending anchor clamps, includes L type base, installs first fixed, the second stationary blade on L type base's base and is used for realizing the loaded pole of test piece, and the test piece passes through first fixed, the centre gripping of second stationary blade on L type base's base, and the loading axis of pole and the coincidence of the base central plane of L type base.

Furthermore, the bottom edge of the L-shaped base is provided with a bolt hole for mounting the first fixing plate and the second fixing plate.

Furthermore, reinforcing ribs are arranged on the side edges of the L-shaped base, so that the L-shaped right angle can be prevented from being deformed due to the existence of bending moment, the deformation is prevented from influencing the test result, and the reliability of the test result is improved.

Further, the upper part and the lower part of the round rod adopt different diameters.

Furthermore, the T-shaped connecting part of the L-shaped base and the platform vertical to the L-shaped base is thickened in a trapezoidal manner, so that the strength is increased.

Further, first stationary blade and second stationary blade pass through the bolt and are fixed with the base, according to sample thickness adjusting bolt connection distance, satisfy the sample size of certain extent, widen the test range.

Compared with the prior art, the invention has the following beneficial effects:

1) the clamp can be directly clamped on a universal testing machine, can effectively prevent looseness and slippage, bears a large lateral bending test load, meets the size of a sample in a certain range, enlarges the testing range, clamps according to the specific size of the sample, and increases the universality of the clamp;

2) the reinforcing ribs are arranged on the side edges, so that the reinforcing ribs can bear larger lateral bending test loads, the L-shaped right angle can be prevented from being deformed due to the existence of bending moment, and loosening and sliding are effectively prevented;

3) simple structure, convenient production and manufacture, and convenient clamping and holding.

Drawings

Fig. 1 is a schematic structural diagram of a lateral bending jig according to an embodiment of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic view of a usage status of the embodiment of the invention.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1-3, an embodiment of the present invention provides a lateral bending fixture, which includes an L-shaped base 1, a first fixing piece 3 mounted on a bottom edge of the L-shaped base 1, a second fixing piece 4, and a round bar 2 for loading a test piece 5, wherein the test piece 5 is clamped on the bottom edge of the L-shaped base 1 by the first fixing piece 3 and the second fixing piece 4, and a loading axis of the round bar 2 coincides with a bottom edge center plane of the L-shaped base 1.

In this embodiment, the bottom edge of the L-shaped base 1 is provided with bolt holes for mounting the first fixing plate 3 and the second fixing plate 4.

In this embodiment, the side edge of the L-shaped base 1 is provided with the reinforcing rib, which can prevent the L-shaped right angle from deforming due to the existence of the bending moment, prevent the deformation from affecting the test result, and improve the reliability of the test result.

In this embodiment, the upper and lower portions of the round bar 2 have different diameters.

In this embodiment, the joint of the L-shaped base 1 and the platform perpendicular thereto is in a T-shape, and is thickened in a trapezoidal shape to increase strength.

In this embodiment, first stationary blade 3 and second stationary blade 4 pass through the bolt and are fixed with base 1, according to sample thickness adjusting bolt connection distance, satisfy the sample size in the certain limit, widen the test range.

Before the test is implemented, the clamping surface of a sample 5 is clamped at a proper position of the long edge of an L-shaped base 1 and is fixed by a first fixing piece 3 and a second fixing piece 4 through bolts, in order to ensure that the test result of the sample of the lateral bending test is accurate and reliable, the clamping surface of the sample is required to be in complete contact with a clamp and is screwed and fixed by bolts so as to prevent looseness and slippage, after the clamping is completed, as shown in figure 3, the loading of the lateral bending test is realized through a round rod 2, the round rod 2 is clamped on a universal testing machine, and a lower chuck of the testing machine clamps the clamping end of the base 1; the round bar 2 is loaded by a downward or upward displacement.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A lateral bending clamp is characterized in that: the loading device comprises an L-shaped base (1), a first fixing piece (3) and a second fixing piece (4) which are arranged on the bottom side of the L-shaped base (1) and a round bar (2) used for loading a test piece (5), wherein the test piece (5) is clamped on the bottom side of the L-shaped base (1) through the first fixing piece (3) and the second fixing piece (4), and the loading axis of the round bar (2) is coincided with the center plane of the bottom side of the L-shaped base (1).

2. A sidewise bending jig according to claim 1 wherein: the bottom edge of the L-shaped base (1) is provided with a bolt hole for installing the first fixing sheet (3) and the second fixing sheet (4).

3. A sidewise bending jig according to claim 1 wherein: reinforcing ribs are arranged on the side edges of the L-shaped base (1).

4. A sidewise bending jig according to claim 1 wherein: the upper part and the lower part of the round rod (2) adopt different diameters.

5. A sidewise bending jig according to claim 1 wherein: the T-shaped connecting part of the L-shaped base (1) and the platform vertical to the L-shaped base is thickened in a trapezoid manner so as to increase the strength.

6. A sidewise bending jig according to claim 1 wherein: first stationary blade (3) and second stationary blade (4) are fixed through bolt and base (1), according to sample thickness adjusting bolt connection distance, satisfy the sample size in the certain limit, widen the test range.