Mechanical testing fixture

Abstract

The utility model discloses a kind of mechanical testing fixtures, it is related to mechanics test technical field, comprising: rack;Two fixed plates;Two pressing plates;Two smoothing mechanisms;Smoothing component includes: sliding plate is slidably connected on fixed plate transversely and vertically, and smoothing rod is fixedly connected on sliding plate;By setting smoothing mechanism, in the process that sliding plate moves on fixed plate, the top of membrane material can be abutted by smoothing rod, and the top of membrane material is smoothed, with the continuous sliding of sliding plate, after smoothing rod and membrane material are separated, passive type driving pressing plate vertically moves downwards, so that the bottom of pressing plate presses the top of membrane material, after smoothing plate is completed smoothing, it is pressed by pressing plate to the membrane material after smoothing again, convenient for the following test to carry out, by smoothing mechanism, the uneven stress condition caused by the wrinkle of membrane material is solved, the accuracy of test result is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing technology, specifically a mechanical testing fixture. Background Technology

[0002] Mechanical property testing is a testing method that measures a material's ability to resist external forces through mechanical experiments. It is primarily used in the research and development of metallic materials, product design, and quality control, and is an indispensable item in the performance testing of metal plastically processed products. It measures the material's performance indicators during elastic deformation, plastic deformation, and fracture processes by applying static or dynamic loads.

[0003] For example, the publication number is CN221038374U, the publication date is May 28, 2024, and the title is "A Mechanical Testing Device for Membrane Biomaterials". It includes a sample loading stage and a sample placement stage, with the sample placement stage located above the loading stage. It also includes a lower stainless steel clamp and an upper stainless steel clamp, with the lower clamp located above the sample placement stage and the upper clamp located above the lower clamp. The sample placement stage also has a placement groove, the size of which matches the lower clamp. This invention saves time and effort by clamping membrane biomaterials, improving sample loading efficiency and ensuring testing consistency.

[0004] In existing technologies, when conducting mechanical tests on membrane materials, the two ends of the membrane material are usually clamped. However, since the clamping mechanism cannot smooth the membrane material, wrinkles usually appear on the membrane material, resulting in uneven stress on the membrane material during subsequent mechanical tests, which in turn affects the accuracy of the test results. On the other hand, manually smoothing the membrane material is time-consuming. Utility Model Content

[0005] The purpose of this invention is to provide a mechanical testing fixture to address the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mechanical testing fixture, comprising:

[0007] frame;

[0008] Two fixed plates are respectively fixedly connected to the frame;

[0009] Two pressure plates are vertically elastically set on two fixed plates in a one-to-one correspondence through an elastic mechanism;

[0010] Two smoothing mechanisms are provided, each corresponding to one of the two pressure plates; each smoothing mechanism includes two smoothing components.

[0011] The smoothing component includes: a slide plate that is horizontally and vertically slidably connected to a fixed plate, a smoothing rod that is fixedly connected to the slide plate, and the bottom of the smoothing rod abutting against the top of the membrane material;

[0012] As the slide plate slides on the fixed plate, it drives the pressure plate to move passively vertically downwards so that the pressure plate comes into contact with the membrane material.

[0013] Furthermore, a vertical rod is fixedly connected to the skateboard, and a right-angle groove is provided on the fixed plate, in which the vertical rod is slidably connected.

[0014] Furthermore, an abutment rod is fixedly connected to the pressure plate, and an abutment groove is provided on the slide plate, with the abutment rod and the abutment groove slidingly engaging.

[0015] Furthermore, the elastic mechanism includes a connecting rod fixedly connected to the fixed plate, and an elastic element is sleeved on the connecting rod.

[0016] Furthermore, the skateboard has an inclined surface, and a wedge block is fixedly connected to the pressure plate, with the wedge block engaging with the inclined surface.

[0017] Furthermore, the abutment groove is opened at an angle.

[0018] Compared with the prior art, the mechanical testing fixture provided by this utility model, by setting a smoothing mechanism, allows the smoothing rod to abut against the top of the membrane material and smooth it as the slide moves on the fixed plate. As the slide continues to slide, when the smoothing rod disengages from the membrane material, it passively drives the pressure plate to move vertically downward, so that the bottom of the pressure plate presses down on the top of the membrane material. This achieves the effect of the pressure plate pressing down on the smoothed membrane material after the smoothing plate has completed the smoothing, which facilitates the subsequent testing. The smoothing mechanism solves the problem of uneven force caused by wrinkles in the membrane material, ensuring the accuracy of the test results. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the frame removal device provided in an embodiment of the present invention;

[0022] Figure 3A schematic diagram of the initial state of the pressure plate, elastic mechanism, and smoothing mechanism provided for an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure where the sliding plate and pressure plate are separated, provided in an embodiment of the present invention.

[0024] Figure 5 A schematic diagram of the pressure plate and elastic mechanism provided in the embodiment of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Fixing plate; 21. Right-angle groove; 3. Pressure plate; 31. Wedge block; 32. Abutting rod; 4. Elastic mechanism; 41. Connecting rod; 42. Elastic element; 5. Smoothing mechanism; 51. Slide plate; 511. Abutting groove; 512. Inclined surface; 52. Vertical rod; 53. Smoothing rod. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] Please see Figure 1-5 This utility model provides a mechanical testing fixture, comprising: a frame 1; two fixed plates 2, which are respectively fixedly connected to the frame 1; specifically, the fixed plates 2 are L-shaped. Two pressure plates 3 are respectively vertically elastically disposed on the two fixed plates 2 through elastic mechanisms 4; it can be understood that the pressure plates 3 are used to press down the membrane material after the sliding plate 51 smooths and detaches it.

[0028] The elastic mechanism 4 includes a connecting rod 41 fixedly connected to the fixed plate 2, and an elastic element 42 is sleeved on the connecting rod 41.

[0029] Two smoothing mechanisms 5 are arranged one-to-one between two pressure plates 3; each smoothing mechanism 5 includes two smoothing components; specifically, the smoothing component includes: a sliding plate 51 that is slidably connected laterally and vertically to the fixed plate 2, and a smoothing rod 53 is fixedly connected to the sliding plate 51; preferably, in order to prevent the smoothing rod 53 from scratching the membrane material during the smoothing process, both sides of the bottom of the smoothing rod 53 are rounded; the bottom of the smoothing rod 53 abuts against the top of the membrane material; during the sliding of the sliding plate 51 on the fixed plate 2, it drives the pressure plate 3 to move passively vertically downward so that the pressure plate 3 abuts against the membrane material.

[0030] A connecting rod 32 is fixedly connected to the pressure plate 3, and a connecting groove 511 is provided on the slide plate 51. The connecting rod 32 and the connecting groove 511 slide and engage in abutment. Specifically, the connecting groove 511 is opened at an angle. Through the engagement of the connecting rod 32 and the connecting groove 511, the pressure plate 3 is passively moved vertically during the movement of the slide plate 51.

[0031] The specific connection method between the smoothing rod 53 and the fixing plate 2 is as follows: a vertical rod 52 is fixedly connected to the sliding plate 51, and a right-angle groove 21 is opened on the fixing plate 2. The vertical rod 52 is slidably connected in the right-angle groove 21. Specifically, the right-angle groove 21 is composed of a horizontal section and a vertical section perpendicular to the horizontal section.

[0032] Preferably, the slide plate 51 has an inclined surface 512, and a wedge block 31 is fixedly connected to the pressure plate 3, with the wedge block 31 abutting against the inclined surface 512.

[0033] Preferably, the two pressure plates 3 are connected by a first crossbar.

[0034] Preferably, the two slide plates 51 in the same smoothing mechanism 5 are connected by a second crossbar.

[0035] Working principle: When using, such as Figure 3 In the state shown, the first horizontal bar is pulled vertically upward, causing the pressure plate 3 to move upward. During the upward movement, under the action of the wedge block 31 and the inclined surface 512, the slide plate 51 is moved to slide along the first direction on the fixed plate 2 (that is, the vertical bar 52 slides in the vertical section of the right angle groove 21), so that the slide plate 51 moves away from the pressure plate 3, and the smoothing bar 53 moves synchronously with the slide plate 51, so that the smoothing bar 53 is removed from the fixed plate 2, so that there is a space for placing the membrane material between the smoothing bar 53 and the fixed plate 2, and between the pressure plate 3 and the fixed plate 2. Then, the two ends of the membrane material are placed at the top position of the fixed plate 2, and the membrane material extends a distance beyond the top of the fixed plate 2, so that the ends of the membrane material can hang down naturally.

[0036] Next, the first horizontal bar is released, and the pressure plate 3 moves downward to reset. The vertical rod 52 of the slide plate 51 slides back from the vertical section to the horizontal section (this can be achieved by manually pushing the slide plate 51 back to reset, or by a spring sliding between the slide plate 51 and the fixed plate 2; the spring is existing technology and will not be elaborated here). Subsequently, the second horizontal bar is moved, causing the vertical rod 52 to slide in the horizontal section. During the sliding process, the smoothing rod 53 smooths the top of the membrane material. As the sliding continues, the slide plate 51 continues to slide, and the abutment groove 511 abuts against the abutment rod 32, causing the pressure plate 3 to move downward to compress the elastic element 42, causing the elastic element 42 to contract, thereby pressing the pressure plate 3 against the membrane material. At the same time, the smoothing rod 53 disengages from the membrane material.

[0037] When the test is completed and the fixture needs to be reset, the slide plate 51 moves in the opposite direction to reset. As described above, this will cause the abutment groove 511 to disengage from the abutment rod 32, driving the pressure plate 3 to move upward and reset. As the movement continues, the inclined surface 512 returns to the position above the wedge block 31.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A mechanical testing fixture, characterized in that, include: Rack (1); Two fixed plates (2) are respectively fixedly connected to the frame (1); Two pressure plates (3) are vertically elastically set on two fixed plates (2) respectively through elastic mechanisms (4); Two smoothing mechanisms (5) are provided between two pressure plates (3) in a one-to-one correspondence; each smoothing mechanism (5) includes two smoothing components; The smoothing component includes: a slide plate (51) that is horizontally and vertically slidably connected to a fixed plate (2), a smoothing rod (53) that is fixedly connected to the slide plate (51), and the bottom of the smoothing rod (53) abutting against the top of the membrane material; As the sliding plate (51) slides on the fixed plate (2), it drives the pressure plate (3) to move vertically downward in a passive manner so that the pressure plate (3) comes into contact with the membrane material.

2. The mechanical testing fixture according to claim 1, characterized in that, A vertical rod (52) is fixedly connected to the slide plate (51), and a right-angle groove (21) is provided on the fixed plate (2). The vertical rod (52) is slidably connected in the right-angle groove (21).

3. A mechanical testing fixture according to claim 1, characterized in that, A connecting rod (32) is fixedly connected to the pressure plate (3), and a connecting groove (511) is provided on the sliding plate (51). The connecting rod (32) and the connecting groove (511) slide and engage in abutment.

4. A mechanical testing fixture according to claim 1, characterized in that, The elastic mechanism (4) includes a connecting rod (41) fixedly connected to the fixed plate (2), and an elastic element (42) is sleeved on the connecting rod (41).

5. A mechanical testing fixture according to claim 1, characterized in that, The slide (51) has a ramp (512), and a wedge block (31) is fixedly connected to the pressure plate (3). The wedge block (31) and the ramp (512) abut against each other.

6. A mechanical testing fixture according to claim 3, characterized in that, The abutment groove (511) is opened at an angle.

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