Engineering building material hardness detection device

Abstract

The utility model relates to the technical field of hardness detection devices, in particular to an engineering building material hardness detection device which comprises a Rockwell hardness tester body, a first protective cover is mounted on the Rockwell hardness tester body, two connecting columns are fixedly connected onto the first protective cover, and first connecting blocks are slidably connected onto the connecting columns. The two first connecting blocks are fixedly connected to the same second protective cover, the second protective cover is slidably connected to the first protective cover, the connecting column is rotatably connected with a stop block, the second protective cover is fixedly connected with a second connecting seat, the second connecting seat is rotatably connected with a rotating shaft, the rotating shaft is fixedly connected with a baffle, and the Rockwell hardness tester body is provided with a pressure head. An objective table is mounted on the Rockwell hardness tester body; and when the Rockwell hardness tester body does not need to be used, the pressure head can be shielded and protected, so that the surface of the pressure head can be cleaned, and the pressure head can be prevented from being damaged due to collision, so that the detection accuracy is ensured, and the use safety is improved.

Description

Technical Field

[0001] This utility model relates to a hardness testing device, specifically a hardness testing device for engineering building materials, and belongs to the technical field of hardness testing devices. Background Technology

[0002] In the field of engineering and construction, a large number of metal materials are used. In order to ensure the performance of these metal materials and avoid safety accidents in the future, it is necessary to test their hardness before they are put into use. Generally, the hardness is tested by a Rockwell hardness tester. During the test, the sampled building material is placed on the stage of the Rockwell hardness tester, and then the indenter on the Rockwell hardness tester presses against the building material to test the hardness.

[0003] However, to ensure the accuracy of the test, the surface of the pressure head often needs to be kept clean. When not in use, the pressure head is directly exposed to the external environment, so dust easily accumulates on its surface, making it difficult to keep clean and also easy to be damaged. In particular, when changing the stage, the bottom of the pressure head needs to be passed over when moving the stage, so a slight accident can cause the sharp part at the bottom of the pressure head to be hit, which can easily damage the pressure head and result in poor safety during use. Utility Model Content

[0004] The purpose of this invention is to provide a hardness testing device for engineering building materials to solve the above problems. When the Rockwell hardness tester body is not needed, the indenter can be shielded and protected, ensuring the surface is clean and preventing it from being damaged by impact, thereby ensuring the accuracy of the test and improving the safety of use.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a hardness testing device for engineering building materials, comprising a Rockwell hardness tester body, wherein the Rockwell hardness tester body is provided with a protective structure, the protective structure comprising a first protective cover and connecting columns, the first protective cover being installed on the Rockwell hardness tester body, two connecting columns being fixedly connected to the first protective cover, a first connecting block being slidably connected to the connecting column, the two first connecting blocks being fixedly connected to the same second protective cover, the second protective cover being slidably connected to the first protective cover, a stop being rotatably connected to the connecting column, a second connecting seat being fixedly connected to the second protective cover, a rotating shaft being rotatably connected to the second connecting seat, a baffle being fixedly connected to the rotating shaft, an indenter being installed on the Rockwell hardness tester body, and a stage being installed on the Rockwell hardness tester body.

[0006] Preferably, the first protective cover is provided with four bayonets, and four positioning posts are fixedly connected to the Rockwell hardness tester body. The positioning posts engage with the adjacent bayonets, and nuts are threaded onto the positioning posts, with the nuts abutting against the first protective cover.

[0007] Preferably, a spring sheet is fixedly connected to the connecting column, and the spring sheet abuts against the stop block.

[0008] Preferably, the four bayonets are arranged in a circular array about the center of the first protective cover, and the two first connecting blocks are arranged in a circular array about the center of the first protective cover.

[0009] Preferably, the bottom of the connecting column has a T-shaped cross-section, and both ends of the stop block extend to the outside of the connecting column.

[0010] Preferably, the rotating shaft is provided with a limiting structure, the limiting structure including a slider and a locking block, the slider is slidably connected to the rotating shaft, the top end of the slider is fixedly connected to the locking block, the second connecting seat is provided with a locking groove, and the bottom end of the locking block engages with the locking groove.

[0011] Preferably, a spring is fixedly connected to the slider, and the spring is fixedly connected to the rotating shaft.

[0012] Preferably, the top of the card block has a T-shaped cross-section, and the slider has a rectangular cross-section.

[0013] Preferably, the indenter engages with the Rockwell hardness tester body, and the Rockwell hardness tester body is threaded with four bolts, one end of which abuts against the indenter.

[0014] The beneficial effects of this utility model are as follows: During use, when the Rockwell hardness tester body is not needed, the two stops can be pressed simultaneously. When the stops no longer block the first connecting block, the second protective cover can be pushed towards the stage. The second protective cover is pushed until the bottom end of the first connecting block contacts the bottom end of the connecting column. Then, the stops block the top end of the first connecting block, thereby limiting the range of motion of the second protective cover. At this time, the bottom end of the second protective cover is lower than the bottom end of the indenter. Therefore, when changing the stage, the stage will not hit the sharp part of the bottom end of the indenter, thus avoiding damage to the indenter and effectively improving the safety of use. Furthermore, the baffle can be rotated to block the bottom end of the indenter, thereby providing more comprehensive protection for the indenter, preventing dust accumulation on the surface of the indenter, ensuring the cleanliness of the indenter surface, and improving the accuracy of the test. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the Rockwell hardness tester body and the stage of this utility model.

[0017] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0018] Figure 4 This is a schematic diagram of the connection structure between the Rockwell hardness tester body and the indenter of this utility model.

[0019] Figure 5 for Figure 4 The enlarged schematic diagram of section B is shown below;

[0020] Figure 6 This is a schematic diagram of the connection structure between the stop block and the spring sheet of this utility model;

[0021] Figure 7 for Figure 6 The enlarged schematic diagram of section C is shown.

[0022] In the diagram: 1. Rockwell hardness tester body; 2. Indenter; 3. Protective structure; 301. First protective cover; 302. Bayonet; 303. Connecting post; 304. First connecting block; 305. Second protective cover; 306. Stop block; 307. Spring; 308. Second connecting seat; 309. Rotating shaft; 310. Baffle; 4. Limiting structure; 401. Slider; 402. Locking block; 403. Spring; 404. Locking groove; 5. Positioning post; 6. Nut; 7. Bolt; 8. Stage. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, a hardness testing device for engineering building materials includes a Rockwell hardness tester body 1. The Rockwell hardness tester body 1 is provided with a protective structure 3. The protective structure 3 includes a first protective cover 301 and connecting posts 303. The first protective cover 301 is installed on the Rockwell hardness tester body 1. Two connecting posts 303 are fixedly connected to the first protective cover 301. First connecting blocks 304 are slidably connected to the connecting posts 303. The two first connecting blocks 304 are fixedly connected to the same second protective cover 305. The second protective cover 305 is slidably connected to the first protective cover 305. The protective cover 301 has a stop 306 rotatably connected to the connecting column 303. The second protective cover 305 has a second connecting seat 308 fixedly connected to it. The second connecting seat 308 has a rotating shaft 309 rotatably connected to it. The rotating shaft 309 has a baffle 310 fixedly connected to it. The Rockwell hardness tester body 1 has an indenter 2 and a stage 8. The four bayonets 302 are arranged in a circular array about the center of the first protective cover 301. The two first connecting blocks 304 are arranged in a circular array about the center of the first protective cover 301.

[0025] As a technical optimization solution of this utility model, such as Figure 3 and Figure 6 As shown, the first protective cover 301 is provided with four bayonet slots 302, and four positioning pins 5 are fixedly connected to the Rockwell hardness tester body 1. The positioning pins 5 engage with the adjacent bayonet slots 302, and the positioning pins 5 are threaded with nuts 6. The nuts 6 abut against the first protective cover 301, thus enabling the quick disassembly of the first protective cover 301, which facilitates the replacement of the pressure head 2.

[0026] As a technical optimization solution of this utility model, such as Figure 7 As shown, a spring piece 307 is fixedly connected to the connecting post 303. The spring piece 307 abuts against the stop block 306, so that the stop block 306 can automatically block the first connecting block 304 under the action of the spring piece 307.

[0027] As a technical optimization solution of this utility model, such as Figure 7 As shown, the bottom section of the connecting post 303 has a T-shaped structure, and both ends of the stop block 306 extend to the outside of the connecting post 303. Therefore, the bottom end of the connecting post 303 can block the bottom end of the first connecting block 304, and the top end of the first connecting block 304 can be blocked by the stop block 306, thereby limiting the position of the first connecting block 304.

[0028] As a technical optimization solution of this utility model, such as Figure 4 and Figure 5As shown, the rotating shaft 309 is provided with a limiting structure 4, which includes a slider 401 and a locking block 402. The slider 401 is slidably connected to the rotating shaft 309, and the locking block 402 is fixedly connected to the top of the slider 401. The second connecting seat 308 is provided with a locking groove 404, and the bottom end of the locking block 402 engages with the locking groove 404. Therefore, the baffle 310 can be limited after rotating at a specified angle.

[0029] As a technical optimization solution of this utility model, such as Figure 5 As shown, a spring 403 is fixedly connected to the slider 401, and the spring 403 is fixedly connected to the rotating shaft 309, thus enabling the slider 401 to automatically reset.

[0030] As a technical optimization solution of this utility model, such as Figure 5 and Figure 7 As shown, the top of the card block 402 has a T-shaped cross-section, and the slider 401 has a rectangular cross-section, thus preventing sliding between the slider 401 and the rotating shaft 309.

[0031] As a technical optimization solution of this utility model, such as Figure 4 As shown, the indenter 2 is engaged with the Rockwell hardness tester body 1. Four bolts 7 are threaded onto the Rockwell hardness tester body 1. One end of each bolt 7 abuts against the indenter 2, thus the indenter 2 can be fixed by the bolts 7 abutting against the indenter 2.

[0032] In use, when the Rockwell hardness tester body is not needed, pressing both stops 306 simultaneously causes the spring 307 to elastically deform. When the stops 306 no longer block the first connecting block 304, the second protective cover 305 can be pushed towards the stage 8. Continuing to push the second protective cover 305 until the bottom end of the first connecting block 304 contacts the bottom end of the connecting post 303, the stops 306, under the action of the spring 307, block the top end of the first connecting block 304, thus limiting the range of motion of the second protective cover 305. At this point, the bottom end of the second protective cover 305 is lower than the bottom end of the indenter 2. Therefore, when changing the stage 8, the stage 8 will not come into contact with the sharp part at the bottom end of the indenter 2, thus avoiding damage to the indenter 2 and effectively improving safety. Furthermore, pulling the locking block 402 causes the slider 401 to move. When the spring 403 extends, the baffle 310 can be rotated when the locking block 402 and the locking slot 404 are not engaged. After the baffle 310 rotates 180 degrees, the locking block 402 will engage with the locking slot 404 again under the action of the spring 403. At this time, the bottom end of the pressure head 2 can be blocked by the baffle 310, so as to more comprehensively protect the pressure head 2, prevent dust from accumulating on the surface of the pressure head 2, ensure the cleanliness of the surface of the pressure head 2, and improve the accuracy of the test. When the pressure head 2 needs to be replaced, the four nuts 6 can be turned in sequence by wrench. When the nuts 6 are not tightened against the first protective cover 301, the first protective cover 301 can be rotated. After the first protective cover 301 is rotated to a certain angle, the first protective cover 301 can be directly removed from the Rockwell hardness tester body 1, thus avoiding the need to unscrew the nut 6 positioning post 5, effectively improving the convenience of operation. Then the bolt 7 can be turned to replace the pressure head 2.

[0033] 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.

[0034] 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. A hardness testing device for engineering building materials, comprising a Rockwell hardness tester body (1), characterized in that: The Rockwell hardness tester body (1) is provided with a protective structure (3), the protective structure (3) includes a first protective cover (301) and connecting posts (303). The first protective cover (301) is installed on the Rockwell hardness tester body (1), and two connecting posts (303) are fixedly connected to the first protective cover (301). A first connecting block (304) is slidably connected to the connecting post (303), and the two first connecting blocks (304) are fixedly connected to the same second protective cover (305). The second protective cover (305) is slidably connected to the first protective cover (301). A stop (306) is rotatably connected to the connecting column (303). A second connecting seat (308) is fixedly connected to the second protective cover (305). A rotating shaft (309) is rotatably connected to the second connecting seat (308). A baffle (310) is fixedly connected to the rotating shaft (309). An indenter (2) is installed on the Rockwell hardness tester body (1). A stage (8) is installed on the Rockwell hardness tester body (1).

2. The hardness testing device for engineering building materials according to claim 1, characterized in that: The first protective cover (301) is provided with four bayonets (302), and four positioning posts (5) are fixedly connected to the Rockwell hardness tester body (1). The positioning posts (5) are engaged with the adjacent bayonets (302), and nuts (6) are threadedly connected to the positioning posts (5). The nuts (6) abut against the first protective cover (301).

3. The hardness testing device for engineering building materials according to claim 1, characterized in that: A spring piece (307) is fixedly connected to the connecting column (303), and the spring piece (307) abuts against the stop block (306).

4. The hardness testing device for engineering building materials according to claim 2, characterized in that: The four bayonets (302) are arranged in a circular array about the center of the first protective cover (301), and the two first connecting blocks (304) are arranged in a circular array about the center of the first protective cover (301).

5. The hardness testing device for engineering building materials according to claim 1, characterized in that: The bottom of the connecting column (303) has a T-shaped cross-section, and the two ends of the stop block (306) extend to the outside of the connecting column (303).

6. The hardness testing device for engineering building materials according to claim 1, characterized in that: The rotating shaft (309) is provided with a limiting structure (4), which includes a slider (401) and a locking block (402). The slider (401) is slidably connected to the rotating shaft (309), and the locking block (402) is fixedly connected to the top of the slider (401). The second connecting seat (308) is provided with a locking groove (404), and the bottom end of the locking block (402) is engaged with the locking groove (404).

7. The hardness testing device for engineering building materials according to claim 6, characterized in that: A spring (403) is fixedly connected to the slider (401), and the spring (403) is fixedly connected to the rotating shaft (309).

8. The hardness testing device for engineering building materials according to claim 6, characterized in that: The top of the card block (402) has a T-shaped cross-section, and the cross-section of the slider (401) has a rectangular cross-section.

9. The hardness testing device for engineering building materials according to claim 1, characterized in that: The indenter (2) engages with the Rockwell hardness tester body (1), and four bolts (7) are threaded onto the Rockwell hardness tester body (1), with one end of each bolt (7) abutting against the indenter (2).

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