A measuring device for tensile test of mechanical properties of castings

Abstract

The utility model discloses a kind of measuring devices for casting mechanical property tensile test, including base, first support, second support and scale, first baffle is vertically provided in the left end of base, first support is provided on the base right side of first baffle, second support is slidably connected with in the right side of first support, third baffle is slidably connected with in the right side of second support, and top bolt is provided on third baffle, scale is provided in the right side of the top of first baffle, second displacement sleeve is slidably connected on scale, measuring rod is provided in the front end of second displacement sleeve. The utility model can effectively solve the problems existing in the conventional test bar elongation test method, such as inaccurate gauge length measurement, unstable test bar placement, etc., significantly improve the accuracy of test bar gauge length measurement and elongation calculation, while reducing the influence of human factors on measurement results, improve the test efficiency, reduce the labor cost and operation time.

Description

Technical Field

[0001] This utility model relates to a measuring device, and more particularly to a measuring device for tensile testing of the mechanical properties of castings, belonging to the field of casting testing technology. Background Technology

[0002] Tensile testing of castings is a crucial step in evaluating material properties. Through tensile testing, important mechanical properties such as tensile strength, yield strength, and elongation can be determined. Elongation, in particular, is a vital parameter for measuring material plasticity, reflecting the maximum deformation a material can withstand during tensile testing. Accurate measurement of the elongation of the casting is essential for evaluating the performance and quality of the casting material.

[0003] Traditional bar elongation testing methods typically require pre-marking gauge lengths on the bar before conducting a tensile test. After the tensile test, the elongation is calculated by measuring the change in gauge length. However, traditional methods have the following problems: ① In traditional bar elongation testing methods, gauge length measurement usually relies on manual marking and manual measuring tools, which are easily affected by human factors and the accuracy of measuring tools, leading to inaccurate measurement results and making it difficult to meet the requirements of high-precision testing; ② The bar placement is unstable: The bar needs to be placed and moved multiple times before and after the tensile test. Traditional methods lack stable fixing devices, which can easily cause the bar to shift during the measurement process, affecting the accuracy of gauge length measurement and the reliability of test results. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a measuring device for tensile testing of the mechanical properties of castings, which can quickly and accurately measure the test bar, improve work efficiency, and ensure the accuracy of measurement results.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0006] A measuring device for tensile testing of the mechanical properties of castings includes a base, a first support, a second support, and a scale. A first baffle is vertically arranged at the left end of the base. The first support is arranged on the base to the right of the first baffle. A strip-shaped groove is arranged on the base to the right of the first support. A crossbar is arranged in the strip-shaped groove. The second support is slidably connected to the crossbar. A second baffle is arranged at the right end of the second support. A first displacement sleeve is slidably connected to the right side of the second support. A third baffle is arranged at the left end of the first displacement sleeve. A tightening bolt is threadedly connected to the upper part of the third baffle. A scale is arranged on the right side of the top of the first baffle. The second displacement sleeve is slidably connected to the scale. A measuring rod is arranged at the front end of the second displacement sleeve.

[0007] The first bracket and the second bracket are two identical brackets, and both the first bracket and the second bracket have a V-shaped groove on their upper end surfaces.

[0008] The first displacement sleeve and the third baffle are arranged in an L-shape, and the first displacement sleeve is fixedly connected to the crossbar by bolts.

[0009] There are two second displacement sleeves. The front end of the second displacement sleeve is provided with an extension plate. A measuring rod is vertically inserted into the extension plate and fixed by bolts on the outer wall of the extension plate.

[0010] The bottom of the measuring rod is cone-shaped, and the bottom end of the measuring rod is located directly above the center of the strip groove.

[0011] The positive and beneficial effects of this utility model are:

[0012] 1. This utility model has a second bracket slidably connected to the crossbar, and a second baffle is provided at the right end of the second bracket. With the use of the first bracket and the first baffle, the two ends of the test bar can be clamped and fixed to ensure that the test bar remains stable during the measurement process, reduce the influence of human factors and test bar displacement on the measurement results, and thus significantly improve the accuracy of gauge length measurement and the accuracy of elongation calculation.

[0013] 2. This utility model, by setting a scale on the right side of the top of the first baffle and sliding two second displacement sleeves on the scale, can quickly and intuitively measure the test bar in conjunction with the measuring rod, avoiding inaccurate measurements caused by human operation, improving testing efficiency, and reducing labor costs and operation time.

[0014] 3. This utility model has a first displacement sleeve slidably connected to the crossbar on the right side of the second support, and a tightening bolt is provided on the third baffle at the left end of the first displacement sleeve, which can clamp and fix the second support, prevent the test bar from moving during the measurement process, and ensure the stability of the test bar.

[0015] 4. The bottom of the measuring rod of this utility model is distributed in a pointed cone shape. During use, the position of the measuring rod can be adjusted according to the position of the test bar to ensure that the measuring rod can accurately contact the surface of the test bar, which further improves the accuracy and reliability of the measurement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a top view of the base of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first displacement sleeve of this utility model;

[0019] Wherein: 1-base, 2-first baffle, 3-first bracket, 4-strip groove, 5-crossbar, 6-second bracket, 7-second baffle, 8-first displacement sleeve, 9-third baffle, 10-tightening bolt, 11-scale, 12-second displacement sleeve, 13-measuring rod. Detailed Implementation

[0020] The present invention will be further explained and described below with reference to the accompanying drawings:

[0021] Example, Participation Figures 1-3 A measuring device for tensile testing of the mechanical properties of castings includes a base 1, a first support 3, a second support 6, and a scale 11. A first baffle 2 is vertically arranged at the left end of the base 1. The first support 3 is arranged on the base 1 to the right of the first baffle 2. A strip groove 4 is arranged on the base 1 to the right of the first support 3. A crossbar 5 is arranged in the strip groove 4. The second support 6 is slidably connected to the crossbar 5. A second baffle 7 is arranged at the right end of the second support 6. A first displacement sleeve 8 is slidably connected to the right side of the second support 6. A third baffle 9 is arranged at the left end of the first displacement sleeve 8. A tightening bolt 10 is threadedly connected to the upper part of the third baffle 9. A scale 11 is arranged on the right side of the top of the first baffle 2. A second displacement sleeve 12 is slidably connected to the scale 11. A measuring rod 13 is arranged at the front end of the second displacement sleeve 12.

[0022] The first bracket 3 and the second bracket 6 are two identical brackets at the same horizontal height, and V-shaped grooves are provided on the upper end surfaces of both the first bracket 3 and the second bracket 6.

[0023] The first displacement sleeve 8 and the third baffle 9 are distributed in an L-shape, and the first displacement sleeve 8 is fixedly connected to the crossbar 5 by bolts.

[0024] There are two second displacement sleeves 12. An extension plate is provided at the front end of the second displacement sleeve 12. A measuring rod 13 is vertically inserted into the extension plate and fixed by bolts on the outer wall of the extension plate.

[0025] The bottom of the measuring rod 13 is cone-shaped, and the bottom end of the measuring rod 13 is located directly above the center of the strip groove 4.

[0026] In the above description, the length of the ruler is the same as the length of the base.

[0027] In the above description, the upper surfaces of both the first and second supports are V-shaped.

[0028] In the above description, the first displacement sleeve is fixedly connected to the crossbar by bolts, and the tightening bolts on the upper part of the third baffle serve to fix the second baffle 7, thereby fixing the second bracket.

[0029] In the above description, the upper surfaces of the first and second supports are located on the same horizontal plane.

[0030] In the above description, the right end of the strip-shaped groove is a through groove.

[0031] Working principle:

[0032] In use, first place the test bar before stretching on the two supports, and then tighten and fix the second support with the tightening bolt. Then move the two second displacement sleeves and adjust the position of the measuring rod to measure and record the test bar.

[0033] After the test bar is stretched, place it on the two ear supports and tighten the second support with the tightening bolt. Then, measure and record the test bar again using the two measuring rods.

[0034] This invention solves the problems of inaccurate gauge length measurement and unstable test bar placement in traditional test bar elongation testing methods by sliding a second bracket on a crossbar and using a first bracket, a first baffle, and a second baffle to clamp and fix the test bar. At the same time, it uses a ruler, a sliding second displacement sleeve, and a measuring rod for precise measurement. This significantly improves the accuracy of gauge length measurement and elongation calculation, while reducing the influence of human factors on the measurement results, increasing testing efficiency, and reducing labor costs and operation time.

Claims

1. A measuring device for tensile testing of mechanical properties of castings, comprising a base (1), a first support (3), a second support (6), and a scale (11), characterized in that: A first baffle (2) is vertically arranged on the left end of the base (1). A first bracket (3) is arranged on the base (1) to the right of the first baffle (2). A strip groove (4) is arranged on the base (1) to the right of the first bracket (3). A crossbar (5) is arranged in the strip groove (4). A second bracket (6) is slidably connected to the crossbar (5). A second baffle (7) is arranged on the right end of the second bracket (6). A first displacement sleeve (8) is slidably connected to the right side of the second bracket (6). A third baffle (9) is arranged on the left end of the first displacement sleeve (8). A tightening bolt (10) is threadedly connected to the upper part of the third baffle (9). A scale (11) is arranged on the right side of the top of the first baffle (2). A second displacement sleeve (12) is slidably connected to the scale (11). A measuring rod (13) is arranged at the front end of the second displacement sleeve (12).

2. The measuring device for tensile testing of mechanical properties of castings according to claim 1, characterized in that: The first bracket (3) and the second bracket (6) are two identical brackets and are at the same horizontal height. The upper surfaces of the first bracket (3) and the second bracket (6) are provided with V-shaped grooves.

3. The measuring device for tensile testing of mechanical properties of castings according to claim 1, characterized in that: The first displacement sleeve (8) and the third baffle (9) are distributed in an L-shape. The first displacement sleeve (8) is fixedly connected to the crossbar (5) by bolts.

4. The measuring device for tensile testing of mechanical properties of castings according to claim 1, characterized in that: There are two second displacement sleeves (12). The front end of the second displacement sleeve (12) is provided with an extension plate. A measuring rod (13) is vertically inserted into the extension plate and fixed by bolts on the outer wall of the extension plate.

5. The measuring device for tensile testing of mechanical properties of castings according to claim 4, characterized in that: The bottom of the measuring rod (13) is cone-shaped, and the bottom end of the measuring rod (13) is located directly above the middle of the strip groove (4).

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