CN217033367U

CN217033367U - General type compression shearing mechanism

Info

Publication number: CN217033367U
Application number: CN202122287204.6U
Authority: CN
Inventors: 许建军; 刘峰
Original assignee: Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-07-22
Anticipated expiration: 2031-09-22

Abstract

The utility model relates to the technical field of mechanical test devices and tests, and particularly discloses a universal compression shearing device which comprises an upper pressing block and a lower pressing block which are arranged up and down, wherein the lower end of the upper pressing block and the upper end of the lower pressing block are provided with an upper loading part and a lower loading part, and the opposite outer sides of the upper loading part and the lower loading part are provided with shearing surfaces; the utility model can be matched with a fatigue testing machine, and samples to be detected with different shapes and specifications can be flexibly adjusted through the clamping blocks of the fixed adjusting components; the sample is not easy to fall off and deform; the device has strong universality and wide application range, and can achieve the purpose of saving cost.

Description

General type compression shearing mechanism

Technical Field

The utility model relates to the technical field of mechanical test devices and tests, in particular to a universal compression shearing device.

Background

In the field of material research, the mechanical property of the material is an important index for judging whether a new material reaches the standard or not. The mechanical properties of the material are the same as the conventional properties such as tension, compression, bending and the like, and the shear properties are very important evaluation indexes, especially in the research field of connecting interfaces existing in samples such as welding, composite material preparation and the like.

However, when the shearing performance of the material is measured by the existing technical means, the size of the sample cannot be flexibly adjusted and the deformation of the sample in multiple directions cannot be restrained, so that the universality is poor, and the processing cost of the tool clamp is high.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a universal compression shearing device which can be used for carrying out mechanical tests on samples with different specifications.

The technical scheme adopted by the utility model is as follows: a universal compression shearing device comprises an upper pressing block and a lower pressing block which are arranged up and down, wherein an upper loading part and a lower loading part are arranged at the lower end of the upper pressing block and the upper end of the lower pressing block, and shearing surfaces are arranged on the opposite outer sides of the upper loading part and the lower loading part; the lower end of the upper loading part and the upper end of the upper loading part are both provided with loading blocks, loading grooves are arranged among the loading blocks, the upper loading part and the lower loading part, and the two loading grooves penetrate through one ends of the loading blocks, which are close to the shearing surface; the loading block is further provided with a fixed adjusting assembly, the fixed adjusting assembly comprises clamping blocks arranged on the bottom wall of the loading groove and each side wall, and the clamping blocks are movably connected with adjusting screw rods in threaded connection with the loading block.

The device provided by the technical scheme can be matched with a fatigue testing machine to realize the shear fatigue test in a compression state, the upper pressing block and the lower pressing block which are arranged up and down can be arranged on testing machine equipment, a sample to be subjected to a mechanical compression shear test can be placed in loading grooves of the two loading blocks, and the samples to be detected with different shapes and specifications can be flexibly adjusted through the clamping blocks of the fixed adjusting assembly before the test; the adjusting screw rod is rotated to ensure that each clamping block is abutted against each side surface of the test sample, so that the sample is not easy to fall off and deform; the minimum clamping block in contact with the sample is only required to be replaced when the sample type is switched, so that the device has strong universality and saves cost; when the test, test sample can be cut off along the shear plane of last briquetting and briquetting down, accomplishes compression shear performance test, after the test, takes off the device, takes out the sample, access and analysis testing machine data collection.

Furthermore, the clamping blocks comprise a plurality of plane clamping blocks and curved surface clamping blocks.

Furthermore, one end of the adjusting screw rod penetrating through the loading block is provided with a rotation adjusting part.

Furthermore, one end of the loading block, which is far away from the shearing surface, is provided with a fixing part, and the fixing part is provided with a fixing bolt connected with the lower end of the upper loading part and the upper end of the lower loading part.

Further, the shearing surfaces on the upper loading part and the lower loading part are positioned on the same vertical plane.

Further, the upper end of the upper pressing block and the lower end of the lower pressing block are provided with pressing block installation parts.

Further, the lower pressing block is provided with mounting portions extending upwards at two ends, and the mounting portions are provided with sliding channels in sliding fit with the upper pressing blocks.

The utility model has the beneficial effects that:

1. the device can realize the shear test of block, round rod and round tube samples.

2. The size of the test sample can be flexibly adjusted by the device.

3. The device can effectively fix the sample in three directions, and the sample is not easy to fall off and deform.

4. The minimum clamping block in contact with the sample is only required to be replaced when the sample type is switched, the universality is strong, and the cost is saved.

5. The device can be matched with a fatigue testing machine to realize the shear fatigue test in a compression state.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a structural view of a general compression shearing apparatus according to an embodiment of the present invention.

Fig. 2 is a perspective view of a loading block of a universal compression shearing apparatus according to an embodiment of the present invention.

Reference numerals: the test piece comprises an upper pressing block 100, an upper loading part 110, a lower pressing block 200, a lower loading part 210, a sliding channel 220, a shearing surface 300, a loading block 400, a loading groove 410, a fixing part 420, a clamping block 500, an adjusting screw 600, a fixing bolt 700 and a test sample 800.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1 and fig. 2, the embodiment of the present invention provides a universal compressive shearing apparatus, which has good versatility and is suitable for testing test samples with different specifications; the device specifically comprises an upper pressing block 100 and a lower pressing block 200 which are arranged up and down, wherein the lower end of the upper pressing block 100 and the upper end of the lower pressing block 200 in the embodiment are provided with an upper loading part 110 and a lower loading part 210, and the opposite outer sides of the upper loading part 110 and the lower loading part 210 are provided with shearing surfaces 300; the lower end of the upper loading part 110 and the upper end of the upper loading part 110 are both provided with loading blocks 400, loading grooves 410 are arranged between the loading blocks 400 and the upper loading part 110 and the lower loading part 210, and the two loading grooves 410 both penetrate through one end of the loading blocks 400 close to the shearing surface 300; the loading block 400 is further provided with a fixed adjusting assembly, the fixed adjusting assembly comprises clamping blocks 500 arranged on the bottom wall and each side wall of the loading groove 410, and the clamping blocks 500 are movably connected with adjusting screws 600 in threaded connection with the loading block 400.

As shown in fig. 1 and fig. 2, the device provided in this embodiment can be matched with a mechanical testing machine to realize a shear fatigue test in a compression state, the upper pressing block 100 and the lower pressing block 200 which are arranged up and down can be installed on a testing machine device, a sample 800 to be subjected to a mechanical compression shear test can be placed in the loading grooves 410 of the two loading blocks 400, and before the test, the test samples 800 to be detected with different shapes and specifications can be flexibly adjusted through the clamping blocks 500 of the fixed adjusting assembly; the adjusting screw 600 is rotated to ensure that each clamping block 500 is abutted against each side surface of the test sample, so that the sample is not easy to fall off and deform; and only the smallest clamping block 500 contacting with the sample needs to be replaced when the sample type is switched; this embodiment is when the test, and test sample 800 can be cut off along the shear plane 300 of last briquetting 100 and lower briquetting 200, accomplishes the compression shear performance test, and after the test, take off the device, take out the sample, access and the analysis testing machine data of gathering.

As shown in fig. 1 and 2, in order to improve the adaptability of the device to samples with different specifications, the clamping block 500 provided in the present embodiment includes a plurality of planar clamping blocks 500 and curved clamping blocks 500. Thus, the plane clamping block 500 can clamp the plane of the test sample, and the curved surface clamping block 500 can clamp the curved surface of the test sample, so that the shear test of the block-shaped, round-rod-shaped and round-tube-shaped samples is realized. In order to adjust and fix the test sample 800, the adjusting screw 600 in this embodiment is provided with a rotation adjusting portion through one end of the loading block 400. The tester can realize the adjustment of the position of the clamping block 500 by rotating the adjusting part during adjustment.

The loading block 400 of the present embodiment is used for loading a test sample, and in order to improve the detection accuracy, a fixing portion 420 is provided at an end of the loading block 400 away from the shearing surface 300, and the fixing portion 420 is provided with a fixing bolt 700 connected to a lower end of the upper loading portion 110 and an upper end of the lower loading portion 210. The fixing part 420 of the loading block 400 can be correspondingly installed at the lower end of the upper loading part 110 and the upper end of the lower loading part 210 by the fixing bolt 700, ensuring the stability of installation and facilitating the disassembly and assembly.

In order to ensure the stability and the precision of the relative movement of the upper pressing block 100 and the lower pressing block 200, the two ends of the lower pressing block 200 are provided with the installation parts extending upwards, the installation parts are provided with the sliding channels 220 in sliding fit with the upper pressing block 100, the sliding channels 220 can play a limiting role, the upper pressing block 100 is ensured to move stably along the vertical direction under the limiting fit of the sliding channels 220, and the upper pressing block 100 is prevented from deviating.

As described above, in the present apparatus, when a pressure is applied to shear a test sample by a compression testing machine, the shear planes 300 of the upper and

lower loading parts

110 and 210 in the present embodiment are located on the same vertical plane. Thus, the test sample can be cut along the shear plane 300, thereby completing the compression shear performance test.

As shown in fig. 1 and 2, since the apparatus is required to be mounted on a testing machine in use, in order to mount the apparatus, the present embodiment is provided with press block mounting portions at the upper end of the upper press block 100 and the lower end of the lower press block 200.

As shown in fig. 1 and 2, in practical application, when a technician places a sample in the loading slots 410 of the two loading parts, each side of the test sample is clamped by the clamping blocks 500; it should be noted that the shear plane 300 of the test specimen should be ensured to be parallel to the shear plane 300 of the upper and

lower carriers

110 and 210 during the adjustment process; for round rod-shaped and round tube-shaped samples, the curved surface clamping block 500 should be correspondingly used, after the whole device and the test sample are installed, the whole device and the test sample are directly and horizontally placed on a compression platform of a mechanical testing machine, the upper pressing block 100 and the lower pressing block 200 of the testing machine are controlled to move in the opposite direction, the test sample is cut off along the shearing surfaces 300 of the upper loading part 110 and the lower loading part 210, and the test of the compression shearing performance is completed. And after the test is finished, taking down the device, taking out the test sample, and storing and analyzing the data acquired by the tester.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.

Claims

1. A universal compressive shearing device, characterized by; comprises an upper pressing block (100) and a lower pressing block (200) which are arranged up and down,

the lower end of the upper pressing block (100) and the upper end of the lower pressing block (200) are provided with an upper loading part (110) and a lower loading part (210), and the opposite outer sides of the upper loading part (110) and the lower loading part (210) are provided with shearing surfaces (300);

the lower end of the upper loading part (110) and the upper end of the upper loading part (110) are both provided with loading blocks (400), loading grooves (410) are arranged between the loading blocks (400) and the upper loading part (110) and between the loading blocks (400) and the lower loading part (210), and the two loading grooves (410) penetrate through one ends, close to the shearing surface (300), of the loading blocks (400);

the loading block (400) is further provided with a fixed adjusting assembly, the fixed adjusting assembly comprises clamping blocks (500) arranged on the bottom wall of the loading groove (410) and each side wall, and the clamping blocks (500) are movably connected with adjusting screws (600) in threaded connection with the loading block (400).

2. A universal compression shearing device as recited in claim 1, wherein; the clamping blocks (500) comprise a plurality of plane clamping blocks and curved surface clamping blocks.

3. A universal compression shearing device as recited in claim 1, wherein; and a rotation adjusting part is arranged at one end of the adjusting screw rod (600) penetrating through the loading block (400).

4. The universal compressive shearing device of claim 1, wherein; one end, far away from the shearing surface (300), of the loading block (400) is provided with a fixing part (420), and the fixing part (420) is provided with a fixing bolt (700) connected with the lower end of the upper loading part (110) and the upper end of the lower loading part (210).

5. The universal compressive shearing device of claim 1, wherein; the shearing surfaces (300) on the upper loading part (110) and the lower loading part (210) are positioned on the same vertical plane.

6. The universal compressive shearing device of claim 1, wherein; and the upper end of the upper pressing block (100) and the lower end of the lower pressing block (200) are provided with pressing block mounting parts.

7. A universal compression shearing device as recited in claim 1, wherein; the two ends of the lower pressing block (200) are provided with installation parts which extend upwards and are arranged, and the installation parts are provided with sliding channels (220) which are in sliding fit with the upper pressing block (100).