Device for measuring gauge length of fractured tensile sample

Abstract

The utility model discloses a device for measuring the scale distance length of a tensile sample after fracture, which comprises a positioning platform, a plurality of measuring devices are arranged on the positioning platform, the measuring devices are detachably arranged on the positioning platform, and each measuring device comprises a base with a U-shaped groove structure. The measuring device comprises a base, frame structures are detachably connected to the base, the frame structures are symmetrically arranged on the two sides of the base, door-type frame structures are formed through the frame structures, a space for measuring the gauge length of a broken circular or plate-shaped tensile sample is formed between the door-type frame structures, and the measuring device further comprises a moving assembly. The measuring device comprises a frame structure and a moving assembly, the moving assembly is detachably provided with a circular or plate-shaped tensile sample, the upper portion of the moving assembly is detachably connected with the circular or plate-shaped tensile sample, the measuring device further comprises a measuring scale detachably connected to the frame structure, and the two sides of the measuring scale are connected to an L-shaped positioning plate through bolts.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical property testing technology of metallic materials, specifically relating to a device for measuring the gauge length of a tensile specimen after fracture. Background Technology

[0002] Mechanical properties of metallic materials are a key delivery condition for steel products. Among these, elongation at fracture of tensile specimens is a crucial test item and plasticity indicator, requiring accurate, rapid, and consistent testing methods to minimize human error. In GB / T 228, the tensile test method, elongation at fracture is defined as the percentage of residual elongation of the gauge length after fracture to the original gauge length. Therefore, the accuracy of elongation at fracture depends on measuring the gauge length after fracture. The key to determining the gauge length is to tightly join the two fractured parts of the specimen together at room temperature, ensuring their axes are aligned, and then measure the gauge length using calipers. Common methods for measuring gauge length include: measuring long samples on a platform using calipers, and measuring short samples by holding the stretched sample in one hand and measuring with calipers in the other, recording the result manually. However, this method is prone to problems such as misalignment of the fracture surfaces, shaking, slippage, and misalignment of the two sections, significantly impacting the measurement results.

[0003] In view of the above factors, a device for measuring the gauge length of a tensile specimen after fracture is provided. It can ensure rapid clamping of the specimen, accurate alignment of the specimen fracture surfaces and the alignment of the axes, and accurate measurement. It features simple structure, convenient use, safe operation, accurate measurement results, and high work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a device for measuring the gauge length of a tensile specimen after fracture, so as to solve the problems mentioned in the background art.

[0005] The purpose of this utility model is achieved through the following technical solution: a device for measuring the gauge length of a tensile specimen after fracture, comprising a positioning platform, wherein a plurality of measuring devices are arranged on the positioning platform, and the measuring devices are detachably installed on the positioning platform;

[0006] The measuring device includes a base with a U-shaped groove structure, on which a frame structure is detachably connected. The frame structure is symmetrically arranged on both sides of the base, forming a portal frame structure. The portal frame structures form a space for measuring the gauge length of a circular or plate-shaped tensile specimen after fracture.

[0007] The measuring device also includes a movable component, which is detachably mounted with a circular or plate-shaped tensile specimen, and the circular or plate-shaped tensile specimen is detachably connected above the movable component.

[0008] Furthermore, the measuring device also includes a measuring ruler that is detachably connected to the frame structure. The measuring ruler is bolted to an L-shaped positioning plate on both sides, and the positioning plate is detachably connected to the frame structure.

[0009] Furthermore, the positioning plates are symmetrically arranged on the frame structure, and the positioning plates are detachably connected to the frame structure by bolt connection;

[0010] The positioning plate is movable on the symmetrical frame structure and is fixed by bolts.

[0011] Furthermore, the moving component includes a slide rail and a slider that cooperates with the slide rail. Two sets of sliders are provided, including a first slider and a second slider opposite to the first slider. The second slider can slide along the slide rail toward the first slider.

[0012] Furthermore, a positioning block is provided on the side of the second slider near the frame structure, and a tightening bolt is provided on the positioning block. The tightening bolt cooperates with the fixing channel on the slide rail, and several fixing channels are provided at intervals along the end face of the slide rail.

[0013] Furthermore, a metal plate is fixedly connected to the first and second sliders on the slider, and a closed switch V-shaped magnet sample stage is provided on the metal plate, with the two sets of closed switch V-shaped magnet sample stages on the same axis.

[0014] Furthermore, the frame structure is L-shaped, and the bottom of the frame structure is bolted to both ends of the slide rail.

[0015] Furthermore, the measuring scale is a countable optical grating scale equipped with a conical probe.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention can ensure rapid clamping of the sample, accurate alignment of the sample fracture surface and the axis, accurate measurement, direct data transmission to a computer or testing machine, reduced measurement error, reduced uncertainty in the measurement of elongation after fracture, and features simple structure, convenient use, safe operation, accurate measurement results, and high work efficiency.

[0018] This utility model has the characteristics of wide application range. At the same time, it adopts a grating ruler equipped with a conical probe, which has the advantages of accurate measurement data and direct data transmission, changing the traditional mode of manual number reporting and recording.

[0019] This invention uses a magnet to fix the sample, making sample installation more convenient and faster; it also features a simple structure, low manufacturing cost, and easy operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection between the positioning platform and the measuring device of this utility model;

[0021] Figure 2 This is a schematic diagram of the starting point measurement of this utility model;

[0022] Figure 3 This is a schematic diagram illustrating the measurement of the gauge length marking points specified in this utility model;

[0023] Figure 4 This is a three-dimensional schematic diagram of the measuring device of this utility model;

[0024] Figure 5 This is a side view of the present invention;

[0025] Figure 6 This is a schematic diagram of the new main view of this utility model;

[0026] Figure 7 This is a utility model Figure 4 Enlarged schematic diagram of the center positioning block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] like Figure 1-7 As shown, an apparatus for measuring the gauge length of a tensile specimen after fracture includes a positioning platform 1, on which a plurality of measuring devices 2 are arranged, and the measuring devices 2 are detachably mounted on the positioning platform 1.

[0031] The measuring device 2 includes a base 21 with a U-shaped groove structure. A frame structure 22 is detachably connected to the base 21. The frame structure 22 is symmetrically arranged on both sides of the base 21, forming a portal frame structure. The portal frame structures form a space for measuring the gauge length of a circular or plate-shaped tensile specimen after fracture.

[0032] The measuring device 2 also includes a moving component 23 on which a circular or plate-shaped tensile specimen is detachably mounted.

[0033] In use, the positioning platform 1 is equipped with several measuring devices 2. The slide rail 23A of the moving component 23 on each measuring device 2 is set with different lengths, which can be used for multiple groups to achieve simultaneous operation. The measuring device 2 cooperates with the positioning block on the positioning platform. The positioning block cooperates with the base 21 of the U-shaped groove structure and is fixed by pins, and can be disassembled.

[0034] To facilitate disassembly and replacement during use, the measuring device 2 also includes a measuring ruler 24 that is detachably connected to the frame structure. The measuring ruler 24 is bolted to an L-shaped positioning plate 25 on both sides, and the positioning plate 25 is detachably connected to the frame structure 22.

[0035] To facilitate control of the positioning plate's height position on the frame structure via bolt connection during use, the positioning plate 25 is symmetrically arranged on the frame structure 22, and the positioning plate 25 is detachably connected to the frame structure 22 via bolt connection; the positioning plate 25 can move on the symmetrical frame structure 22 and be fixed by bolts.

[0036] A waist-shaped hole is provided on the frame structure 22 to cooperate with the positioning plate 25 and is fixed by bolts.

[0037] The above-mentioned positioning plate cooperates with the frame structure to adjust the height of the measuring ruler according to the size and shape of the tensile sample, so that the measuring head can be accurately aligned with the marked points on the sample.

[0038] To facilitate adjustment during use by setting a moving component, the moving component 23 includes a slide rail 23A and a slider that cooperates with the slide rail 23A. Two sets of sliders are provided, including a first slider 23B and a second slider 23C opposite to the first slider 23B. The second slider 23C can slide along the slide rail 23A toward the first slider.

[0039] To facilitate use, the second slider moves towards the first slider to ensure that the two sample sections are aligned. After alignment, the samples are fixed by tightening bolts and engaging with the fixing holes on the slide rail for easy measurement. A positioning block 26 is provided on the side of the second slider 23C closest to the frame structure 22. The positioning block 26 is fixedly connected to the second slider 23C and engages with the slide rail 23A. A tightening bolt 27 is provided on the positioning block 26, engaging with the fixing holes 28 on the slide rail 23A. Several fixing holes 28 are spaced apart along the end face of the slide rail 23A.

[0040] To facilitate the fixation of the sample by the closed switch V-shaped magnet sample stage during use, a metal plate is fixedly connected to the first and second sliders of the slider. The closed switch V-shaped magnet sample stage 29 is provided on the metal plate. The two sets of closed switch V-shaped magnet sample stages 29 are on the same axis. The closed switch V-shaped magnet sample stage 29 adopts the KMV-50 or 125B series magnetic seat permanent magnet triangle structure.

[0041] The sample stage uses a V-shaped magnet with a switching function, which makes the sample very stable when placed. The sample is firmly attracted, ensuring that the axes of the two sample sections are aligned after docking, thus improving measurement accuracy.

[0042] To facilitate positioning via the frame structure during use and to make it easy to disassemble and replace, the frame structure 22 is L-shaped, and the bottom of the frame structure 22 is bolted to both ends of the slide rail 23A.

[0043] The test sample is mounted on a V-shaped magnet with a switching function. The test sample is then aligned by moving the second slider. The V-shaped magnet with a switching function makes it very stable when placing a circular sample. The sample is firmly attracted, ensuring that the axes of the two sample segments are aligned after alignment, thus improving measurement accuracy. At the same time, clamping the sample is very convenient and quick.

[0044] like Figure 2As shown, during use, the measurement is performed from the starting point using a countable optical grating ruler equipped with a conical probe to measure the gauge length of a circular or plate-shaped tensile specimen after fracture. The measurement is aligned with the marked point on the sample. Figure 3 The endpoint of the marker point that specifies the gauge length.

[0045] To facilitate accurate measurements during use and direct data transmission to a computer or testing machine, the measuring scale is a countable optical grating scale equipped with a tapered probe. This ensures accurate alignment of the sample fracture surfaces and ensures axis consistency, reducing measurement errors and uncertainty in elongation measurement. It features a simple structure, ease of use, safe operation, accurate measurement results, and high work efficiency.

[0046] This utility model is made of aluminum alloy and stainless steel materials, and has the advantages of being beautiful, elegant, lightweight and durable.

[0047] This invention uses a high-precision grating ruler that can directly transmit data to computer software or industrial software, eliminating the need for staff to read and record data, thus improving work efficiency and reducing human error.

[0048] This invention enables the rapid and secure installation of test samples via a closed-switch V-shaped magnet sample stage, achieving accurate alignment of the sample fracture surfaces and axis, facilitating accurate measurement, reducing measurement errors, and lowering the uncertainty of post-fracture elongation. It features a simple structure, convenient use, safe operation, accurate measurement results, reduced human error, and high work efficiency.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An apparatus for measuring the gauge length of a tensile specimen after breaking, characterized by: It includes a positioning platform (1), on which a plurality of measuring devices (2) are provided, and the measuring devices (2) are detachably installed on the positioning platform (1); The measuring device (2) includes a base (21) with a U-shaped groove structure. A frame structure is detachably connected to the base (21). The frame structure is symmetrically arranged on both sides of the base (21) to form a portal frame structure. A space is formed between the portal frame structures to measure the gauge length of a circular or plate-shaped tensile specimen after fracture. The measuring device (2) also includes a movable component, which is detachably mounted with a circular or plate-shaped tensile specimen, and the circular or plate-shaped tensile specimen is detachably connected above the movable component.

2. The apparatus for measuring the gauge length of a tensile specimen after breaking according to claim 1, characterized in that: The measuring device (2) also includes a measuring ruler that is detachably connected to the frame structure. The measuring ruler is bolted to an L-shaped positioning plate on both sides, and the positioning plate is detachably connected to the frame structure.

3. The apparatus for measuring the gauge length of a tensile specimen after breaking according to claim 2, characterized in that: The positioning plates are symmetrically arranged on the frame structure, and the positioning plates are detachably connected to the frame structure by bolts. The positioning plate is movable on the symmetrical frame structure and is fixed by bolts.

4. The apparatus for measuring the gauge length of a tensile specimen after breaking according to claim 3, characterized in that: The moving component includes a slide rail and a slider that cooperates with the slide rail. Two sets of sliders are provided. The slider includes a first slider and a second slider opposite to the first slider. The second slider can slide along the slide rail toward the first slider.

5. The apparatus for measuring the gauge length of a tensile specimen after breaking according to claim 4, characterized in that: The second slider is provided with a positioning block on the side near the frame structure. The positioning block is provided with a tightening bolt. The tightening bolt cooperates with the fixing channel on the slide rail. Several fixing channels are provided at intervals along the end face of the slide rail.

6. The apparatus for measuring the gauge length of a tensile specimen after breaking according to claim 4, characterized in that: Metal plates are fixedly connected to the first and second sliders on the slider. A closed switch V-shaped magnet sample stage is provided on the metal plate, and the two sets of closed switch V-shaped magnet sample stages are on the same axis.

7. The apparatus for measuring the gauge length of a tensile specimen after breaking according to claim 5, characterized in that: The frame structure is L-shaped, and the bottom of the frame structure is bolted to both ends of the slide rail.

8. The apparatus for measuring the gauge length of a tensile specimen after breaking according to claim 6, characterized in that: The measuring scale is a countable optical grating scale equipped with a conical probe.

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