Portable device for testing percentage elongation after fracture

Abstract

The utility model discloses a portable device for testing percentage elongation after fracture, and relates to the field of laboratory auxiliary equipment. The device comprises a base, the top surface of the base is provided with a positioning groove, two ends of the base are respectively provided with a clamping mechanism, a measuring mechanism is arranged outside the base, the measuring mechanism comprises a sliding column parallel to the extension direction of the positioning groove, the sliding column is provided with a first sliding sheet and a second sliding sheet in a sliding mode, and the first sliding sheet and the second sliding sheet are arranged on the base. The first slip sheet and the second slip sheet are arranged in parallel, a laser range finder is installed on the face, facing the second slip sheet, of the first slip sheet, and a display screen of the laser range finder is arranged on the top face of the first slip sheet. When a sample with the percentage elongation after fracture of metal is measured, the elongation of the metal sample can be rapidly and accurately measured, so that the percentage elongation after fracture of the metal material is calculated, and the plasticity index of the metal is known.

Description

Technical Field

[0001] The utility model relates to the field of laboratory auxiliary equipment, in particular to a portable elongation after fracture testing device. Background Art

[0002] The most commonly used material in modern industry is metal. The reason why it is widely used is mainly because it has various superior properties required in the processing and use process.

[0003] The properties of metal materials are the main basis for material selection, among which the mechanical properties of metal materials are usually the most considered. The mechanical properties include plasticity indicators, and the elongation after fracture is the most important among the plasticity indicators.

[0004] At present, in the process of classroom teaching, some of the measuring tools used for mechanical properties testing are simply vernier calipers and other measuring tools with low accuracy and relatively troublesome measurement. Human measurement errors and reading errors lead to inaccurate calculation results. Therefore, in order to measure the elongation of metal faster and better, we urgently need to design a simple and easy-to-use digital elongation measurement tool to minimize human errors. Utility Model Content

[0005] The purpose of the utility model is to provide a portable elongation testing device, so that when measuring the elongation of a metal sample, the elongation of the metal sample can be measured quickly and accurately, thereby calculating the elongation of the metal material and knowing the plasticity index of the metal.

[0006] In order to achieve the above purpose, the utility model adopts the following technical means:

[0007] A portable elongation after fracture testing device includes a base, a positioning groove is provided on the top surface of the base, a clamping mechanism is provided at both ends of the base, and a measuring mechanism is further provided outside the base, the measuring mechanism includes a sliding column parallel to the extension direction of the positioning groove, a first sliding plate and a second sliding plate are slidingly provided on the sliding column, the first sliding plate and the second sliding plate are arranged parallel to each other, a laser rangefinder is installed on the side of the first sliding plate facing the second sliding plate, and the display screen of the laser rangefinder is provided on the top surface of the first sliding plate.

[0008] Preferably, the positioning groove is a V-shaped groove.

[0009] Furthermore, the clamping mechanism includes a first bracket and a second bracket arranged at both ends of the base, a material clamping channel is provided between the top sides of the first bracket and the second bracket and the positioning groove, and the top sides of the first bracket and the second bracket are both threadedly installed with a clamping nut, and the clamping end of the clamping nut is provided in the material clamping channel and directly above the positioning groove.

[0010] Furthermore, positioning plates are installed at both ends of the base, and the first bracket and the second bracket are respectively installed on the two positioning plates.

[0011] Furthermore, the measuring mechanism includes a first telescopic rod provided on both sides of the first bracket and a second telescopic rod provided on both sides of the second bracket, and both ends of the sliding column are respectively connected to the telescopic top ends of the first telescopic rod and the second telescopic rod.

[0012] Furthermore, the first sliding plate and the second sliding plate are configured as upwardly convex arc structures on one side facing the positioning groove.

[0013] During use, the utility model has the following beneficial effects:

[0014] During use, the complete specimen is first placed in the positioning slot, with both ends of the specimen clamped and positioned. The first and second slides are then aligned with the scribed lines on the specimen, and a laser rangefinder is used to display the distance between them. This determines the length of the test area, which serves as the initial length.

[0015] After the specimen breaks during the tensile test, the fractured metal specimen is spliced ​​together and placed in a positioning slot. The ends of the spliced ​​specimen are clamped in the clamping mechanism. The first and second slides are then moved to align the two scribed lines on the specimen. The final length of the specimen after the fracture is determined by reading the data from the laser rangefinder.

[0016] Finally, the elongation after fracture is calculated by comparing and subtracting the final length from the initial length, so as to achieve the purpose of observing the data quickly and intuitively. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model.

[0019] Figure 3 It is a side view structural diagram of the utility model.

[0020] Figure 4 This is a schematic diagram of the staple food structure of the utility model.

[0021] Figure 5 for Figure 3 Schematic diagram of the AA cross-section structure.

[0022] Figure 6 for Figure 4 Schematic diagram of the BB cross-section structure.

[0023] Among them, 1-base, 2-positioning groove, 3-clamping mechanism, 31-first bracket, 32-second bracket, 33-tightening nut, 4-sliding column, 5-first slide, 6-second slide, 7-laser rangefinder, 8-positioning plate, 9-first telescopic rod, 10-second telescopic rod. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] Please refer to Figures 1 to 6 As shown, a portable elongation after fracture testing device includes a base 1, a positioning groove 2 is provided on the top surface of the base 1, and a clamping mechanism 3 is provided at both ends of the base 1. A measuring mechanism is also provided outside the base 1, and the measuring mechanism includes a slide column 4 parallel to the extension direction of the positioning groove 2, and a first slide 5 and a second slide 6 are slidingly provided on the slide column 4. The first slide 5 and the second slide 6 are arranged parallel to each other, and a laser rangefinder 7 is installed on the side of the first slide 5 facing the second slide 6. The display screen of the laser rangefinder 7 is provided on the top surface of the first slide 5.

[0031] Thus, during use, the complete specimen is first placed in the positioning groove 2, and both ends of the complete specimen are clamped and positioned by the clamping mechanism 3. Then, the first slide 5 and the second slide 6 are respectively aligned with the scribed positions on the specimen, and the laser rangefinder 7 is used to display the distance between the first slide 5 and the second slide 6, thereby determining the length of the test area, which is used as the initial length.

[0032] After the specimen undergoes a tensile test and fractures, the fractured metal specimen is spliced ​​together and placed in positioning slot 2. The spliced ​​specimen's ends are clamped in place by clamping mechanism 3. The first slide 5 and the second slide 6 are then moved to align the two scribed lines of the specimen. The final length of the specimen after fracture is determined by reading data from a laser rangefinder 7.

[0033] Finally, the elongation after fracture is calculated by comparing and subtracting the final length from the initial length, so as to achieve the purpose of observing the data quickly and intuitively.

[0034] In order to optimize the positioning stability of the positioning groove 2 for the sample, the positioning groove 2 is a V-shaped groove.

[0035] Furthermore, for cylindrical materials, the V-shaped groove can partially clamp the materials, thereby improving the stability of the materials placed in the positioning groove 2, preventing them from rolling, and making it easy to load and remove the materials.

[0036] In addition, for the clamping mechanism 3, the clamping mechanism 3 includes a first bracket 31 and a second bracket 32 ​​arranged at both ends of the base 1, and a material clamping channel is provided between the top sides of the first bracket 31 and the second bracket 32 ​​and the positioning groove 2, and the top sides of the first bracket 31 and the second bracket 32 ​​are both threadedly installed with a clamping nut 33, and the clamping end of the clamping nut 33 is arranged in the material clamping channel and directly above the positioning groove 2.

[0037] In this way, the material can be pressed tightly in the positioning groove 2 through the contact between the clamping nut 33 and the top surface of the material in the clamping channel.

[0038] Furthermore, positioning plates 8 are installed at both ends of the base 1 , and the first bracket 31 and the second bracket 32 ​​are respectively installed on the two positioning plates 8 .

[0039] At the same time, the measuring mechanism includes a first telescopic rod 9 provided on both sides of the first bracket 31 and a second telescopic rod 10 provided on both sides of the second bracket 32. The two ends of the sliding column 4 are respectively connected to the telescopic top ends of the first telescopic rod 9 and the second telescopic rod 10.

[0040] In this way, by moving the first telescopic rod 9 and the second telescopic rod 10 up and down, the height of the slide column 4 can be adjusted, thereby adjusting the height of the first slide plate 5 and the second slide plate 6. In this way, the entire device can be adapted to a variety of materials with different outer diameters, thereby improving the adaptability of the device.

[0041] Furthermore, in order to allow the first slide 5 and the second slide 6 to have a larger fitting area with the columnar material, the first slide 5 and the second slide 6 are configured to have an upwardly convex arc structure on one side facing the positioning groove 2 .

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable elongation test device, characterized in that: The invention comprises a base (1), wherein a positioning groove (2) is provided on the top surface of the base (1), a clamping mechanism (3) is provided at both ends of the base (1), and a measuring mechanism is further provided outside the base (1), wherein the measuring mechanism comprises a slide column (4) parallel to the extending direction of the positioning groove (2), a first slide (5) and a second slide (6) are slidingly provided on the slide column (4), the first slide (5) and the second slide (6) are arranged parallel to each other, a laser rangefinder (7) is installed on the side of the first slide (5) facing the second slide (6), and a display screen of the laser rangefinder (7) is arranged on the top surface of the first slide (5).

2. The portable elongation after fracture test device according to claim 1, characterized in that: The positioning groove (2) is a V-shaped groove.

3. The portable elongation after fracture test device according to claim 1, characterized in that: The clamping mechanism (3) comprises a first bracket (31) and a second bracket (32) arranged at both ends of the base (1); a material clamping channel is provided between the top sides of the first bracket (31) and the second bracket (32) and the positioning groove (2); a clamping nut (33) is threadedly mounted on the top sides of the first bracket (31) and the second bracket (32); a clamping end of the clamping nut (33) is provided in the material clamping channel and directly above the positioning groove (2).

4. The portable elongation after fracture test device according to claim 3, characterized in that: Positioning plates (8) are installed at both ends of the base (1), and the first bracket (31) and the second bracket (32) are respectively installed on the two positioning plates (8).

5. The portable elongation after fracture test device according to claim 4, characterized in that: The measuring mechanism comprises a first telescopic rod (9) provided on both sides of the first bracket (31) and a second telescopic rod (10) provided on both sides of the second bracket (32), and both ends of the sliding column (4) are respectively connected to the telescopic top ends of the first telescopic rod (9) and the second telescopic rod (10).

6. The portable elongation after fracture test device according to claim 5, characterized in that: The first sliding piece (5) and the second sliding piece (6) are configured as upwardly convex arc structures on one side facing the positioning groove (2).

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