Steel hardness detection device for engineering test detection

Abstract

The utility model discloses a steel hardness detection device for engineering test detection, which comprises a base, the top surface of the base is fixedly provided with a fixing frame, the surface of the fixing frame is movably provided with a lifting frame, and the top surface of the fixing frame is fixedly provided with a first motor for providing power for the movement of the lifting frame. A rotary table is rotatably mounted on the surface of the lifting frame, a detection assembly used for detecting the hardness of the steel and a grinding assembly used for grinding the surface of the steel are arranged on the surface of the rotary table, and the output end of a third motor rotates, so that the two sets of positioning clamping plates get close to each other, and the steel is clamped and fixed; the output end of a second motor drives a grinding piece to rotate at a high speed, the surface of the steel is ground, an oxide skin or a decarburized layer on the surface of the steel is removed, meanwhile, the surface of the steel can become flat, and the quality of the steel is improved. And the situation that the pressure head is stressed unevenly due to the uneven surface is avoided.

Description

Technical Field

[0001] This utility model relates to the field of steel hardness testing technology, specifically a steel hardness testing device for engineering testing. Background Technology

[0002] Engineering testing and inspection is a technical activity that uses scientific methods to test the performance and evaluate the quality of engineering materials, components and structures. It is a key link in ensuring the quality, safety and functionality of engineering projects. In engineering testing and inspection, it is often necessary to test the hardness of steel. Steel hardness testing is a key means to ensure material performance, production quality and engineering safety.

[0003] When steel is exposed to air for extended periods, a layer of oxide scale or decarburization gradually forms. The hardness of these surface layers differs significantly from that of the steel's base material. Furthermore, some steel surfaces often exhibit roughness and unevenness, which can lead to uneven pressure on the indenter during hardness testing. Without proper pre-treatment of these surfaces, the test results may deviate from the true hardness value of the steel. Therefore, this invention provides a steel hardness testing device for engineering experiments to address the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a steel hardness testing device for engineering testing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A steel hardness testing device for engineering testing includes a base, a fixed frame fixedly mounted on the top surface of the base, a lifting frame movably mounted on the surface of the fixed frame, a first motor fixedly mounted on the top surface of the fixed frame to provide power for the movement of the lifting frame, a turntable rotatably mounted on the surface of the lifting frame, a testing component for testing the hardness of steel and a grinding component for grinding the surface of steel provided on the surface of the turntable, a fixing component for fixing the turntable provided inside the lifting frame, a placement plate for placing steel fixedly mounted on the top surface of the base, a positioning clamp for fixing the position of steel movably mounted on the top surface of the placement plate, and a protective cover fixedly mounted on the top surface of the base.

[0007] As a further embodiment of this utility model, a threaded rod is fixedly installed at the output end of the first motor, and a threaded block is threadedly installed on the surface of the threaded rod, and the threaded block is fixedly connected to the lifting frame.

[0008] As a further embodiment of this utility model, the detection component includes an electric push rod fixedly installed on the surface of the turntable, and a hardened steel ball is fixedly installed at the output end of the electric push rod.

[0009] As a further embodiment of this utility model, the grinding assembly includes a motor frame fixedly mounted on the surface of the turntable, a second motor fixedly mounted on the surface of the motor frame, and a grinding disc fixedly mounted on the output end of the second motor through the motor frame.

[0010] As a further embodiment of this utility model, the fixing component includes a spring groove formed inside the lifting frame. A movable rod is slidably installed inside the spring groove. A movable block is fixedly installed at one end of the movable rod. A spring is fixedly installed on the side of the movable block near the movable rod. The end of the spring away from the movable block is fixedly connected to the inner wall of the spring groove, and the spring is sleeved on the outer wall of the movable rod. A plug rod is fixedly installed on the side of the movable block away from the movable rod. A pull plate is fixedly installed on the end of the movable rod away from the movable block. An insertion hole is formed on the surface of the turntable, and the plug rod is correspondingly arranged with the insertion hole.

[0011] As a further embodiment of this utility model, a third motor is fixedly installed on the surface of the placement plate, and a bidirectional lead screw is fixedly installed at the output end of the third motor. The two positioning clamps are threadedly connected to the bidirectional lead screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When this utility model is used, the output end of the third motor rotates, which drives the bidirectional lead screw to rotate, so that the two sets of positioning clamps move closer to each other and clamp and fix the steel on the placement plate, preventing the steel from shifting and falling off due to impact during the testing process.

[0014] 2. When this utility model is used, the output end of the second motor drives the grinding disc to rotate at high speed to grind the surface of the steel, remove the oxide scale or decarburized layer on the surface of the steel, and at the same time make the surface of the steel flat, avoiding uneven pressure on the pressure head due to an uneven surface. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a steel hardness testing device for engineering testing.

[0016] Figure 2 This is a cross-sectional view of the overall structure of a steel hardness testing device used in engineering testing.

[0017] Figure 3 This is a cross-sectional view of the lifting frame in a steel hardness testing device used in engineering testing.

[0018] Figure 4 This is a cross-sectional view of a plate placed in a steel hardness testing device used in engineering testing.

[0019] Figure 5 This is a schematic diagram of the structure of a steel hardness testing device used in engineering testing, showing the structure through a hole.

[0020] In the diagram: 1. Base; 2. Fixing frame; 3. First motor; 4. Threaded rod; 5. Threaded block; 6. Slide groove; 7. Lifting frame; 8. Turntable; 9. Electric push rod; 10. Hardened steel ball; 11. Motor frame; 12. Second motor; 13. Grinding disc; 14. Insertion hole; 15. Spring groove; 16. Movable rod; 17. Movable block; 18. Spring; 19. Insert rod; 20. Pull plate; 21. Placement plate; 22. Third motor; 23. Bidirectional lead screw; 24. Positioning clamp; 25. Moving groove; 26. Protective cover; 27. Through hole; 28. Collection box. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 In this embodiment of the present invention, a steel hardness testing device for engineering testing includes a base 1, a fixed frame 2 fixedly installed on the top surface of the base 1, a lifting frame 7 movably installed on the surface of the fixed frame 2, a first motor 3 fixedly installed on the top surface of the fixed frame 2 to provide power for the movement of the lifting frame 7, a turntable 8 rotatably installed on the surface of the lifting frame 7, a testing component for testing the hardness of steel and a grinding component for grinding the surface of steel are provided on the surface of the turntable 8, the testing component and the grinding component are symmetrically arranged on the upper and lower sides of the turntable 8, the surface of the turntable 8 has four insertion holes 14, which are divided into two groups of two, arranged symmetrically on the left and right, the lifting frame 7 has a fixing component for fixing the turntable 8 inside, a placement plate 21 for placing steel is fixedly installed on the top surface of the base 1, a positioning clamp 24 for fixing the position of steel is movably installed on the top surface of the placement plate 21, a protective cover 26 is fixedly installed on the top surface of the base 1, a through hole 27 is opened on the top surface of the base 1, and a collection box 28 is slidably installed inside the base 1.

[0023] A threaded rod 4 is fixedly installed at the output end of the first motor 3. A threaded block 5 is threadedly installed on the surface of the threaded rod 4. In order to ensure that the threaded block 5 can slide up and down stably, a groove 6 is provided inside the fixed frame 2. The threaded block 5 is slidably installed inside the groove 6 and is fixedly connected to the lifting frame 7.

[0024] The detection assembly includes an electric push rod 9 fixedly mounted on the surface of the turntable 8, and a hardened steel ball 10 is fixedly mounted on the output end of the electric push rod 9.

[0025] In order to remove the oxide scale or decarburized layer on the surface of the steel and make the steel surface smooth, the grinding assembly includes a motor frame 11 fixedly mounted on the surface of the turntable 8, a second motor 12 fixedly mounted on the surface of the motor frame 11, and the output end of the second motor 12 passes through the motor frame 11 and is fixedly mounted with a grinding disc 13.

[0026] The fixing assembly includes a spring groove 15 inside the lifting frame 7. A movable rod 16 is slidably installed inside the spring groove 15. A movable block 17 is fixedly installed at one end of the movable rod 16. A spring 18 is fixedly installed on the side of the movable block 17 near the movable rod 16. The end of the spring 18 away from the movable block 17 is fixedly connected to the inner wall of the spring groove 15 and is sleeved on the outer wall of the movable rod 16. A plug rod 19 is fixedly installed on the side of the movable block 17 away from the movable rod 16. A pull plate 20 is fixedly installed on the end of the movable rod 16 away from the movable block 17. There are two sets of fixing assemblies, symmetrically arranged on both sides of the lifting frame 7. Each set of fixing assemblies has two spring grooves 15, two movable rods 16, two movable blocks 17, two springs 18 and two plug rods 19, and the plug rods 19 are correspondingly arranged with the plug holes 14.

[0027] To prevent the steel from shifting or shaking during testing, a third motor 22 is fixedly installed on the surface of the placement plate 21. A bidirectional lead screw 23 is fixedly installed at the output end of the third motor 22. Two positioning clamps 24 are threadedly connected to the bidirectional lead screw 23. To ensure that the positioning clamps 24 can move stably on the placement plate 21, a moving groove 25 is provided on the top surface of the placement plate 21. The bottom of the positioning clamps 24 is slidably installed inside the moving groove 25. A rubber pad is fixedly installed on the surface of the positioning clamps 24.

[0028] The working principle of this utility model is as follows: The operator places the steel to be tested onto the placement plate 21, starts the third motor 22, and the output end of the third motor 22 rotates, driving the bidirectional lead screw 23 to rotate, which in turn drives the positioning clamping plate 24 to move. The two sets of positioning clamping plates 24 move closer to each other, clamping and fixing the steel on the placement plate 21 to prevent the steel from shifting and falling due to impact during the testing process. After the steel is fixed, because the steel will form an oxide scale or decarburized layer when exposed to air, its hardness is different from that of the base material. Therefore, the first motor is started... Machine 3, through the rotation of the output end of the first motor 3, drives the threaded rod 4 to rotate, which in turn drives the threaded block 5 to move down along the slide groove 6, thereby driving the lifting frame 7 to move down, driving the turntable 8 to move down, so that the motor frame 11 and the second motor 12 move down, adjusting the height of the grinding disc 13 so that the grinding disc 13 contacts the top surface of the steel, and starting the second motor 12, the output end of the second motor 12 drives the grinding disc 13 to rotate at high speed, grinding the surface of the steel, removing the oxide scale or decarburized layer on the surface of the steel, and at the same time making the steel surface smooth, avoiding unevenness. The flat surface causes uneven pressure on the pressure head. Meanwhile, the debris generated during grinding is blocked by the protective cover 26 and falls into the collection box 28 through the hole 27, preventing debris from scattering and facilitating centralized processing. After grinding the steel surface, the output of the first motor 3 rotates in the reverse direction, causing the turntable 8 to move upwards. This causes the grinding disc 13 to move upwards, pulling the pull plate 20 outwards, which in turn moves the movable rod 16 and the movable block 17. The spring 18 is compressed, causing the insertion rod 19 to move and disengage from the insertion hole 14, and the turntable 8 loses its limit position. The turntable 8 can be rotated so that the electric push rod 9 rotates to the lower side of the turntable 8, and the second motor 12 rotates to the upper side of the turntable 8. The pull plate 20 is released, and under the action of the restoring force of the spring 18, the movable block 17 is pushed to move, which drives the insertion rod 19 to move, so that the insertion rod 19 is inserted into the insertion hole 14, which can limit and fix the turntable 8. The electric push rod 9 is started, and the output end of the electric push rod 9 drives the quenched steel ball 10 to move down quickly, impacting the grinding area on the steel surface. By observing the depth of the indentation produced by the impact on the steel surface, the hardness of the steel can be detected.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hardness testing device for engineering test detection steel material, comprising a base (1), characterized in that, A fixed frame (2) is fixedly installed on the top surface of the base (1). A lifting frame (7) is movably installed on the surface of the fixed frame (2). A first motor (3) that provides power for the movement of the lifting frame (7) is fixedly installed on the top surface of the fixed frame (2). A turntable (8) is rotatably installed on the surface of the lifting frame (7). A detection component for detecting the hardness of steel and a grinding component for grinding the surface of steel are provided on the surface of the turntable (8). A fixing component for fixing the turntable (8) is provided inside the lifting frame (7). A placement plate (21) for placing steel is fixedly installed on the top surface of the base (1). A positioning clamp (24) for fixing the position of steel is movably installed on the top surface of the placement plate (21). A protective cover (26) is fixedly installed on the top surface of the base (1).

2. The steel hardness testing device for engineering test and detection according to claim 1, characterized in that, The output end of the first motor (3) is fixedly installed with a threaded rod (4), and a threaded block (5) is threadedly installed on the surface of the threaded rod (4), and the threaded block (5) is fixedly connected to the lifting frame (7).

3. The steel hardness testing device for engineering test and detection according to claim 1, characterized in that, The detection assembly includes an electric push rod (9) fixedly installed on the surface of the turntable (8), and a hardened steel ball (10) is fixedly installed at the output end of the electric push rod (9).

4. The steel hardness testing device for engineering test and detection according to claim 1, characterized in that, The grinding assembly includes a motor frame (11) fixedly mounted on the surface of the turntable (8). A second motor (12) is fixedly mounted on the surface of the motor frame (11). The output end of the second motor (12) passes through the motor frame (11) and is fixedly mounted with a grinding disc (13).

5. The steel hardness testing device for engineering testing according to claim 1, characterized in that, The fixing assembly includes a spring groove (15) inside the lifting frame (7). A movable rod (16) is slidably installed inside the spring groove (15). A movable block (17) is fixedly installed at one end of the movable rod (16). A spring (18) is fixedly installed on the side of the movable block (17) near the movable rod (16). The end of the spring (18) away from the movable block (17) is fixedly connected to the inner wall of the spring groove (15), and the spring (18) is sleeved on the outer wall of the movable rod (16). A plug rod (19) is fixedly installed on the side of the movable block (17) away from the movable rod (16). A pull plate (20) is fixedly installed on the end of the movable rod (16) away from the movable block (17). An insertion hole (14) is opened on the surface of the turntable (8). The plug rod (19) is correspondingly arranged with the insertion hole (14).

6. The steel hardness testing device for engineering test and detection according to claim 1, characterized in that, A third motor (22) is fixedly installed on the surface of the placement plate (21), and a bidirectional lead screw (23) is fixedly installed at the output end of the third motor (22). The two positioning clamps (24) are threadedly connected to the bidirectional lead screw (23).

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