Metal material hardness testing device

Abstract

The utility model relates to the technical field of metal material hardness testing, in particular to a metal material hardness testing device which comprises a shell, a first limiting groove is formed in the inner side of the shell, a limiting block is connected to the inner side of the first limiting groove in a sliding mode, and one end of the limiting block is fixedly connected with a fixing plate. And first limiting holes are formed in the top end of the shell and the top end of the limiting block. According to the utility model, the shell, the side plate, the second limiting groove, the connecting plate, the second limiting hole, the fixed rod, the telescopic rod, the first limiting plate, the handle, the second limiting plate, the third limiting plate, the hardness tester, the detection button and other components are arranged; the position of the hardness tester can be adjusted left and right under the action of a second limiting groove, after adjustment is completed, a handle is held to move a fixing rod downwards, when the hardness tester makes contact with a metal plate, the handle continues to be pressed downwards, a telescopic rod can retract into the fixing rod, and the fixing rod can drive a second limiting plate to continue to move downwards.

Description

Technical Field

[0001] The utility model relates to the technical field of metal material hardness testing, in particular to a metal material hardness testing device. Background Art

[0002] Leeb hardness tester is a new type of hardness testing instrument, mainly suitable for testing the hardness of metal materials, with high test accuracy, small size, easy operation, convenient carrying, wide measuring range, Leeb hardness tester is designed according to the Leeb (Dietmar Leeb) hardness test principle, the measured Leeb hardness value is automatically converted into Brinell, Rockwell, Vickers, Shore and other hardness values through the program, and can also be equipped with various test accessories to meet various test conditions and environments. Its basic principle is that an impact body with a certain mass impacts the sample surface under a certain test force, and measures the impact velocity and rebound velocity of the impact body 1mm away from the sample surface, and uses the electromagnetic principle to induce a voltage proportional to the velocity.

[0003] The existing metal material hardness testing device requires multiple pressings on different positions of the metal plate to obtain the average value of the test results, which is rather troublesome; the fixing device of the existing metal material hardness testing device cannot effectively be compatible with metal plates of different lengths. The hardness testing device must have a higher stability during measurement, and shaking will affect the accuracy of the measurement data. A fixing structure that is compatible with metal plates of different lengths is required to assist in the test. Therefore, a metal material hardness testing device is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a metal material hardness testing device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hardness testing device for metal materials, comprising a housing. Inside the housing, there is a first limiting groove. A limiting block is slidably connected inside the first limiting groove. One end of the limiting block is fixedly connected to a fixing plate. At the top of both the housing and the limiting block, there are first limiting holes. A fixing bolt is snap-fitted inside the first limiting holes. A side plate is fixedly connected to the outside of the housing. On one side of the side plate, there is a second limiting groove. A support plate is slidably connected inside the second limiting groove. At the top of the support plate, there is a second limiting hole. A fixing rod is slidably connected inside the second limiting hole. A telescopic rod is slidably connected inside the fixing rod. A first limiting plate is fixedly connected to the outside of the fixing rod. A handle is fixedly connected to the top of the fixing rod. A second limiting plate is fixedly connected to the bottom end of the fixing rod. A third limiting plate is fixedly connected to the outside of the telescopic rod. A hardness tester is fixedly connected inside the third limiting plate. A detection button is provided at the top of the hardness tester.

[0007] Preferably, a spring is fixedly connected to one side of the fixing plate. One end of the spring away from the fixing plate is fixedly connected to a connecting plate. One end of the connecting plate away from the spring is fixedly connected to a rubber plate.

[0008] Preferably, the fixing rod and the telescopic rod form a telescopic structure.

[0009] Preferably, the hardness tester and the detection button are a set, and there are six sets in total. They are evenly arranged inside the third limiting plate with the telescopic rod as the center.

[0010] Preferably, the number of the side plates is two, and they are symmetrically arranged on both sides of the housing.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, through components such as the housing, the side plate, the second limiting groove, the connecting plate, the second limiting hole, the fixing rod, the telescopic rod, the first limiting plate, the handle, the second limiting plate, the third limiting plate, the hardness tester, and the detection button, the position of the hardness tester can be adjusted left and right under the action of the second limiting groove. After adjustment, hold the handle and move the fixing rod downward. When the hardness tester touches the metal plate, continue to press the handle downward, which will cause the telescopic rod to retract into the fixing rod. The fixing rod will drive the second limiting plate to continue to move downward, causing the second fixing plate to press the detection button downward. By pressing the detection button, six hardness testers are started to simultaneously detect six different positions of the metal plate, and the hardness average value can be quickly obtained without multiple tests, thus solving the problem that the existing hardness testing device for metal materials needs to press different positions of the metal plate multiple times to obtain the average value of the test results, which is rather troublesome.

[0013] 2. In the present utility model, through components such as the housing, the first limiting groove, the limiting block, the fixing plate, the rubber plate, the spring, the first limiting hole, and the fixing bolt, under the limitation of the limiting block and the first limiting groove, the fixing plate can be freely moved. According to the length of the current metal plate, the position of the fixing plate is adjusted so that the rubber plate is in close contact with the metal plate. Then, the fixing plate is further pushed to compress the spring. After adjustment, the fixing bolt is inserted into the first limiting hole to fix the fixing plate and the housing. The rubber plate can effectively increase the friction force to prevent the metal plate from moving, and the spring can further clamp the metal plate and reduce the shaking, thereby solving the problem that the fixing device of the existing metal material hardness testing device cannot effectively accommodate metal plates of different lengths, and the hardness testing device requires high stability during measurement. Shaking will affect the accuracy of the measurement data, and a fixing structure that can accommodate metal plates of different lengths is needed to assist in the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic side view structure diagram of the present utility model;

[0016] Figure 3 is a schematic top sectional structure diagram of the present utility model;

[0017] Figure 4 is a schematic top view structure diagram of the housing of the present utility model;

[0018] Figure 5 is a schematic sectional structure diagram of the fixing rod of the present utility model;

[0019] Figure 6 is a schematic bottom view structure diagram of the hardness tester of the present utility model.

[0020] In the figure: 1. Housing; 2. First limiting groove; 3. Limiting block; 4. Fixing plate; 5. Spring; 6. Connecting plate; 7. Rubber plate; 8. First limiting hole; 9. Fixing bolt; 10. Side plate; 11. Second limiting groove; 12. Support plate; 13. Second limiting hole; 14. Fixing rod; 15. Telescopic rod; 16. First limiting plate; 17. Handle; 18. Second limiting plate; 19. Third limiting plate; 20. Hardness tester; 21. Detection button. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meanings and therefore should not be construed as limiting the protection scope of the present invention.

[0024] Please refer to Figures 1-6 , the present utility model provides a technical solution:

[0025] A hardness testing device for metal materials, comprising a housing 1. A first limiting groove 2 is provided inside the housing 1. A limiting block 3 is slidably connected inside the first limiting groove 2. One end of the limiting block 3 is fixedly connected to a fixing plate 4. First limiting holes 8 are provided at the tops of the housing 1 and the limiting block 3. A fixing bolt 9 is snap-fitted inside the first limiting holes 8. A side plate 10 is fixedly connected to the outside of the housing 1. A second limiting groove 11 is provided on one side of the side plate 10. A support plate 12 is slidably connected inside the second limiting groove 11. A second limiting hole 13 is provided at the top of the support plate 12. A fixing rod 14 is slidably connected inside the second limiting hole 13. A telescopic rod 15 is slidably connected inside the fixing rod 14. A first limiting plate 16 is fixedly connected to the outside of the fixing rod 14. A handle 17 is fixedly connected to the top of the fixing rod 14. A second limiting plate 18 is fixedly connected to the bottom end of the fixing rod 14. A third limiting plate 19 is fixedly connected to the outside of the telescopic rod 15. A hardness tester 20 is fixedly connected inside the third limiting plate 19. A detection button 21 is provided at the top of the hardness tester 20.

[0026] A spring 5 is fixedly connected to one side of the fixing plate 4. One end of the spring 5 away from the fixing plate 4 is fixedly connected to a connecting plate 6. One end of the connecting plate 6 away from the spring 5 is fixedly connected to a rubber plate 7. The fixing rod 14 and the telescopic rod 15 form a set of telescopic structures. The hardness tester 20 and the detection button 21 form a set, and there are six sets in total. And with the telescopic rod 15 as the center, they are evenly arranged inside the third limiting plate 19. The number of the side plates 10 is two, and they are symmetrically arranged on both sides of the housing 1.

[0027] Workflow: When the metal material hardness testing device is needed, the hardness tester 20 is a prior art, which is the testing head part of the Leeb hardness tester. First, under the limitation of the limiting block 3 and the first limiting groove 2, the fixing plate 4 can be freely moved. According to the current length of the metal plate, the position of the fixing plate 4 is adjusted to make the rubber plate 7 close to the metal plate. Then, the fixing plate 4 is continuously pushed to compress the spring 5. After adjustment, the fixing bolt 9 is inserted into the first limiting hole 8 to fix the fixing plate 4 and the housing 1. The rubber plate 7 can effectively increase the friction force to prevent the metal plate from moving. The spring 5 can further clamp the metal plate and reduce the shaking. After being fixed, under the action of the second limiting groove 11, the position of the hardness tester 20 can be adjusted left and right. After adjustment, hold the handle 17 and move the fixing rod 14 downward. When the hardness tester 20 touches the metal plate, continue to press the handle 17, which will cause the telescopic rod 15 to retract into the fixing rod 14. The fixing rod 14 will drive the second limiting plate 18 to continue to move downward, so that the second limiting plate 18 presses the detection button 21 downward. By pressing the detection button 21, six hardness testers 20 are started to detect six different positions of the metal plate at the same time, and the hardness average value can be quickly obtained without multiple tests, greatly improving the detection efficiency.

[0028] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hardness testing device for metal materials, comprising a housing (1), characterized in that: The inner side of the housing (1) is provided with a first limiting groove (2), and a limiting block (3) is slidably connected to the inner side of the first limiting groove (2). One end of the limiting block (3) is fixedly connected to a fixing plate (4). First limiting holes (8) are provided at the tops of the housing (1) and the limiting block (3), and a fixing bolt (9) is snap-fitted inside the first limiting holes (8). A side plate (10) is fixedly connected to the outside of the housing (1). A second limiting groove (11) is provided on one side of the side plate (10), and a support plate (12) is slidably connected to the inner side of the second limiting groove (11). A second limiting hole (13) is provided at the top of the support plate (12), and a fixing rod (14) is slidably connected to the inside of the second limiting hole (13). A telescopic rod (15) is slidably connected to the inside of the fixing rod (14). A first limiting plate (16) is fixedly connected to the outside of the fixing rod (14). A handle (17) is fixedly connected to the top of the fixing rod (14). A second limiting plate (18) is fixedly connected to the bottom end of the fixing rod (14). A third limiting plate (19) is fixedly connected to the outside of the telescopic rod (15), and a hardness tester (20) is fixedly connected to the inside of the third limiting plate (19). A detection button (21) is provided at the top of the hardness tester (20).

2. The hardness testing device for a metal material according to claim 1, characterized in that: A spring (5) is fixedly connected to one side of the fixing plate (4), a connecting plate (6) is fixedly connected to the end of the spring (5) away from the fixing plate (4), and a rubber plate (7) is fixedly connected to the end of the connecting plate (6) away from the spring (5).

3. The hardness testing device for a metal material according to claim 2, wherein: The fixing rod (14) and the telescopic rod (15) form a telescopic structure group.

4. A hardness testing device for a metal material according to claim 1, characterized in that: The hardness tester (20) and the detection button (21) are a group, and there are six groups in total. They are evenly arranged inside the third limiting plate (19) with the telescopic rod (15) as the center.

5. The hardness testing device for a metal material according to claim 1, characterized in that: The number of the side plates (10) is two, and they are symmetrically arranged on both sides of the housing (1).

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