Metal material mechanical property testing device

Abstract

The utility model relates to the field of metal performance tests, and discloses a metal material mechanical property testing device which comprises a machine body component and a limiting component, the machine body component comprises a testing machine main body and a pressure head, an internal thread sleeve is arranged under the pressure head, a vertical stud is connected in the internal thread sleeve in a matched mode, and the limiting component is arranged on the machine body component; the bottom end of the stud is connected with the testing machine main body through a bearing, and the top end is fixed with a bearing table; the limiting component comprises a rotating mechanism arranged on the testing machine main body and used for driving the stud to rotate and a limiting mechanism used for limiting the internal thread sleeve to rotate. Under the action of the connecting mechanism, the annular ring is connected to the top end of the bearing table, the center of the annular ring is consistent with that of the pressure head, and a sample is cut into a shape matched with the interior of the annular ring before a test, so that the sample is placed in the annular ring to be limited, and when the bearing table rotates and ascends, the sample is limited by the annular ring, so that the sample is prevented from being damaged. And the centrifugal problem of the sample is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of metal performance testing, in particular to a metal material mechanical performance testing device. Background Art

[0002] Mechanical property tests of metals include tensile tests, impact tests, hardness tests, shear tests, etc.

[0003] For hardness testing, a Brinell hardness tester can be used. The main testing process is as follows: Select an appropriate indenter and test force. Then, place the specimen on the hardness tester and apply an initial test force to bring the indenter into contact with the specimen surface. Then, apply the main test force and maintain it for a period of time. Remove the test force and measure the indentation diameter. The Brinell hardness value is calculated based on the indentation diameter and test force.

[0004] The Brinell hardness tester's specimen is placed on a platform that can be raised and lowered, gradually raising the specimen against the indenter. Although the specimen can be cut into a flat structure before testing to prevent it from slipping and popping out when in contact with the indenter, the test platform itself rotates as it rises and falls. This means that the specimen is subject to the centrifugal force of rotation as it rises and falls, causing it to deviate from the center of the indenter. Furthermore, if the centers of the two are not aligned, the specimen will be unevenly stressed, and the indentation left by the indenter on the specimen will be inaccurate, leading to inaccurate test results. Utility Model Content

[0005] Technical problem to be solved: How to make the center of the sample consistent with the center of the indenter.

[0006] Technical solution: The utility model provides a metal material mechanical properties testing device, including a body component and a limiting component: the body component includes a testing machine body and a pressure head, an internal threaded sleeve is provided directly below the pressure head, a vertical stud is connected in the internal threaded sleeve, the bottom end of the stud is connected to the testing machine body through a bearing, and a receiving platform is fixed on the top end; the limiting component includes a rotating mechanism provided on the testing machine body for driving the stud to rotate and a limiting mechanism for limiting the rotation of the internal threaded sleeve; in addition, an annular ring for accommodating a sample is provided on the top of the receiving platform, and a connecting mechanism is provided between the two for connection.

[0007] Furthermore, the connecting mechanism includes an annular groove opened at the top of the receiving platform, and the bottom end of the annular ring is inserted into the annular groove.

[0008] Furthermore, the bottom end of the annular ring is provided with a plurality of upper screw holes distributed in a circular array; at the same time, the bottom end of the receiving platform is penetrated by a plurality of lower screw holes adapted to the upper screw holes, and bolts are connected between the upper screw holes and the lower screw holes.

[0009] Furthermore, the rotating mechanism includes a turning handle fixedly sleeved on the outer peripheral side of the stud, and the turning handle is located below the internal threaded sleeve and close to the bottom end of the stud.

[0010] Furthermore, the limiting mechanism includes a connecting rod fixedly connected to the outside of the internal threaded sleeve, and the outside of the connecting rod is fixed to the testing machine body.

[0011] Furthermore, a connecting hole is opened on the testing machine body at a position corresponding to the bearing, the bearing is located in the connecting hole, and the bearing is composed of a bearing group.

[0012] Technical effect: In the utility model, an annular ring is connected to the top of the receiving platform through the action of the connecting mechanism. The center of the annular ring is consistent with the pressure head. Before the test, the sample is cut into a shape that is compatible with the inside of the annular ring, so that the sample is placed in the annular ring for limiting. In this way, when the receiving platform rotates and rises, the sample will not have the problem of centrifugation due to the restriction of the annular ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a side structural diagram of the present utility model;

[0016] Figure 3 It is a partial structural decomposition diagram of the utility model;

[0017] In the figure: 1. Testing machine body; 2. Pressure head; 3. Internally threaded sleeve; 4. Stud; 5. Supporting platform; 6. Rotating mechanism; 601. Turning handle; 7. Limiting mechanism; 701. Connecting rod; 8. Annular ring; 9. Connecting mechanism; 901. Annular groove; 902. Upper screw hole; 903. Lower screw hole; 904. Bolt. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0019] The metal material mechanical properties testing device provided in this embodiment is as follows: Figure 2 As shown, it includes a body component and a limiting component, wherein:

[0020] The main body of the tester consists of a main body 1 and an indenter 2. An internally threaded sleeve 3 is positioned directly below the indenter 2. A vertical stud 4 is fitted into the sleeve 3. The bottom end of this stud 4 is connected to the main body 1 via a bearing, and a receiving platform 5 is fixed to its top. Specifically, a connecting hole is provided on the main body 1 at the location corresponding to the bearing. The bearing is positioned within this hole. This bearing is preferably constructed as a bearing assembly. Because a single bearing is difficult to maintain structural stability, a bearing assembly is preferred.

[0021] The limiting member includes a rotating mechanism 6 for driving the stud 4 to rotate and a limiting mechanism 7 for limiting the rotation of the internal threaded sleeve 3, which is provided on the testing machine body 1. Figure 3 As shown, the rotating mechanism 6 includes a handle 601 fixedly sleeved on the outer periphery of the stud 4. The handle 601 is located below the internal threaded sleeve 3 and close to the bottom end of the stud 4. The limiting mechanism 7 includes a connecting rod 701 fixedly connected to the outside of the internal threaded sleeve 3. The outer side of the connecting rod 701 is fixed to the testing machine body 1. In addition, the top of the receiving platform 5 is provided with an annular ring 8 for accommodating the sample, and a connecting mechanism 9 is provided between the two for connection. Figure 3 As shown, the connecting mechanism 9 includes an annular groove 901 formed at the top of the receiving platform 5, and the bottom end of the annular ring 8 is inserted into the annular groove 901. In this way, before the test, the sample is cut into a shape that matches the inside of the annular ring 8, and the sample is placed in the annular ring 8 for positioning. In this way, when the receiving platform 5 rotates and rises, the sample will not be centrifuged due to the restriction of the annular ring 8. On this basis, the annular ring 8 can be further fixed, such as Figure 3 As shown, the bottom end of the annular ring 8 is provided with a plurality of upper screw holes 902 arranged in a circular array. Simultaneously, the bottom end of the receiving platform 5 is provided with a plurality of lower screw holes 903 that mate with the upper screw holes 902. Bolts 904 engage and connect the upper and lower screw holes 902 and 903. This structure provides a stable connection for the annular ring 8. However, the annular ring 8 can also be difficult to remove. Therefore, more specifically, a bump can be welded to the bottom end of the bolt 904, allowing the user to manually tighten the bolt 904.

[0022] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0023] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A metal material mechanical properties testing device, comprising a body component and a limiting component: The machine body component comprises a testing machine body (1) and a pressure head (2), and is characterized in that: An internal threaded sleeve (3) is provided directly below the pressure head (2), a vertical stud (4) is connected in cooperation with the internal threaded sleeve (3), the bottom end of the stud (4) is connected to the testing machine body (1) through a bearing, and a receiving platform (5) is fixed to the top end thereof; The limiting member comprises a rotating mechanism (6) provided on the testing machine body (1) for driving the stud (4) to rotate, and a limiting mechanism (7) for limiting the rotation of the internal threaded sleeve (3); in addition, an annular ring (8) for accommodating a sample is provided at the top end of the receiving platform (5), and a connecting mechanism (9) is provided between the two for connection.

2. The metal material mechanical properties testing device according to claim 1, characterized in that: The connecting mechanism (9) comprises an annular groove (901) provided at the top of the receiving platform (5), and the bottom end of the annular ring (8) is inserted into the annular groove (901).

3. The metal material mechanical properties testing device according to claim 2, characterized in that: The bottom end of the annular ring (8) is provided with a plurality of upper screw holes (902) distributed in an annular array; at the same time, the bottom end of the receiving platform (5) is provided with a plurality of lower screw holes (903) adapted to the upper screw holes (902), and bolts (904) are connected between the upper screw holes (902) and the lower screw holes (903).

4. The metal material mechanical properties testing device according to claim 1, characterized in that: The rotating mechanism (6) comprises a turning handle (601) fixedly sleeved on the outer peripheral side of the stud (4). The turning handle (601) is located below the internal threaded sleeve (3) and close to the bottom end of the stud (4).

5. The metal material mechanical properties testing device according to claim 1, characterized in that: The limiting mechanism (7) comprises a connecting rod (701) fixedly connected to the outside of the internal threaded sleeve (3), and the outside of the connecting rod (701) is fixed to the testing machine body (1).

6. The metal material mechanical properties testing device according to claim 1 or 4, characterized in that: A connecting hole is provided on the testing machine body (1) at a position corresponding to the bearing, the bearing is located in the connecting hole, and the bearing is composed of a bearing group.

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