A ground profile hardness tester

Abstract

This utility model relates to the field of construction industry quality supervision technology, and discloses a ground scratch hardness measuring instrument, including a positioning plate and a cutting tool. A pressure handle is provided on the positioning plate, and a scratching groove is provided on the bottom surface of the positioning plate. The positioning plate is used to press against the ground to be tested. The cutting tool includes a blade shell and a blade body, with the blade body located inside the blade shell. A position slot is provided on the blade shell, and a spring and a pressure button are provided on the blade body. The pressure button is located on the position slot. The lower end of the blade body is the cutting head. When the pressure button is pressed onto the position slot, the cutting head extends out of the blade shell, and the cutting head scratches the ground through the scratching groove on the positioning plate to measure the hardness. This utility model uses the positioning plate to determine the testing area and adjusts the cutting head height to be suitable for hardness testing of different ground materials.

Description

Technical Field

[0001] This utility model relates to the field of construction industry quality supervision technology, and in particular to a ground scratch hardness measuring instrument. Background Technology

[0002] After self-leveling flooring or concrete flooring is poured and molded, its hardness index needs to be tested to determine whether it meets the design requirements. The current method involves destructive testing using a tool. Workers use a testing tool to scratch the floor, and the hardness is judged based on the scratches.

[0003] The tool can be used to scratch multiple parallel lines on the ground, and the hardness can be judged based on the depth of the parallel lines. Multiple intersecting lines can also be scratched, and the hardness and adhesion can be judged based on the damage at the intersection. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems and provide a ground scratch hardness measuring instrument. The instrument uses a positioning plate to determine the detection area and the height of the cutting tool can be adjusted to make it suitable for hardness testing of different ground materials.

[0005] The technical solution adopted by this utility model is: A ground scratch hardness measuring instrument is characterized by comprising a positioning plate and a cutting tool. A pressure handle is provided on the positioning plate, and a scratching groove is provided on the bottom surface of the positioning plate. The positioning plate is used to press against the ground to be tested. The cutting tool comprises a blade housing and a blade body. The blade body is located inside the blade housing, and a position slot is provided on the blade housing. A spring and a pressure button are provided on the blade body, and the pressure button is located on the position slot. The lower end of the blade body is a cutting head. When the pressure button is pressed onto the position slot, the cutting head extends out of the blade housing, and the cutting head performs scratch hardness measurement on the ground through the scratching groove on the positioning plate.

[0006] Furthermore, a locking block is fixedly installed at the lower end of the blade shell, the blade body passes through the through hole on the locking block, the pressure button is installed on the fixing block above the blade body, and the spring is sleeved between the fixing block on the blade body and the locking block on the blade shell.

[0007] Furthermore, the blade housing has multiple position slots located at different heights. Each position slot includes a vertical slot and multiple horizontal slots. After the button moves in the vertical slot, it is positioned in the horizontal slot.

[0008] Furthermore, a retaining spring is provided below the blade body, and the retaining spring is located on the blade body below the retaining block.

[0009] Furthermore, the engraved grooves are multiple and arranged in parallel on the positioning plate.

[0010] Furthermore, an upward-facing flange is formed on one side of the positioning plate, and the pressure handle is provided on the flange.

[0011] Furthermore, a sealing ball is provided at the top opening of the blade shell.

[0012] The beneficial effects of this utility model are: (1) The predetermined ground markings are achieved by using a positioning plate; (2) The scribe path is parallel and can scribe multiple parallel and intersecting detection lines; (3) The blade can be adjusted to extend the blade tip, making it suitable for ground inspection of different materials. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the structure of this utility model during operation; Appendix Figure 2 This is a structural diagram of the positioning plate; Appendix Figure 3 This is a schematic diagram of the cutting tool's structure; Appendix Figure 4 This is an exploded view of the cutting tool components; Appendix Figure 5 This is a schematic diagram showing the location of the retaining spring at the bottom of the blade.

[0014] The labels in the attached diagram are as follows: 1. Positioning plate; 2. Cutting tool; 3. Flanging; 4. Pressing; 5. Card slot; 6. Flange; 7. Scribing groove; 8. Tool shell; 9. Tool body; 10. Positioning slot; 11. Spring; 12. Button; 13. Blade tip; 14. Sealing bulb; 15. Card block; 16. Fixing block; 17. Vertical groove; 18. Horizontal groove; 19. Snap ring. Detailed Implementation

[0015] The specific implementation of the ground scratch hardness measuring instrument of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] See appendix Figure 1 The ground scratch hardness measuring instrument includes a positioning plate 1 and a cutting tool 2. The positioning plate 1 is used to define the measurement position, and the cutting tool 2 is used to scratch at the measurement position.

[0017] See appendix Figure 2The positioning plate 1 is a metal plate with an upward-facing flange 3 on its side. A pressure handle 4 is provided on the flange 3, and a slot 5 is provided on the pressure handle 4. The flange 3 is fixed by the slot 5. It can be fixed by fasteners or adhesive. A flange 6 is provided on the pressure handle 4 for easy manual pressing. Multiple parallel grooves 7 are provided on the bottom surface of the positioning plate 1. When the bottom surface of the positioning plate 1 is placed on the ground, the operator presses down with the pressure handle 4 to make the bottom surface of the positioning plate 1 fully fit with the ground. The grooves 7 of the positioning plate 1 are used for the tool 2 to carve the ground.

[0018] See appendix Figures 3 to 5 The cutting tool 2 includes a tool shell 8 and a tool body 9. The tool body 9 is located inside the tool shell 8. The tool shell 8 is provided with a position slot 10. The tool body 9 is provided with a spring 11 and a pressure button 12. The pressure button 12 is located on the position slot 10. The lower end of the tool body 9 is the cutting head 13. When the pressure button 12 is pressed onto the position slot 10, the cutting head 13 extends out of the tool shell 8. The cutting head 13 performs a scratch hardness measurement on the ground through the scratching groove 7 on the positioning plate 1.

[0019] Specifically, a sealing ball 14 is provided at the upper end of the blade housing 8 to close the upper opening. A locking block 15 is fixedly provided at the lower end of the blade housing 8, and the blade body 9 passes through the through hole on the locking block 15. A pressing button 12 is provided on the fixing block 16 above the blade body 9, and a spring 11 is sleeved between the fixing block 16 on the blade body 9 and the locking block 15 on the blade housing 8. There are multiple position slots 10 on the blade housing 8, located at different heights. Each position slot 10 includes a vertical slot 17 and multiple horizontal slots 18. After the pressing button 12 moves in the vertical slot 17, it is positioned in the horizontal slots 18. A retaining spring 19 is also provided below the blade body 9, located on the blade body 9 below the locking block 15. The retaining spring 19 limits the position of the blade body 9 when it retracts into the blade housing 8.

[0020] When measuring the hardness of a surface using the hardness measuring instrument of this patent, the pressure button 12 of the cutting tool 2 is moved down along the vertical groove 17 as required, and the cutting head 13 extends from the lower end of the cutting tool housing 8. The pressure button 12 is fixed in a horizontal groove 18, and it is confirmed that the extension length of the cutting head 13 is suitable for testing. Then, the positioning plate 1 is placed on the surface to be tested. One hand presses down the pressure handle 4 of the positioning plate 1, and the other hand holds the cutting tool 2. The cutting head 13 is inserted into the scoring groove 7 on the positioning plate 1 to score. Depending on the testing requirements, scoring can be performed in multiple scoring grooves 7, or the positioning plate 1 can be rotated 90 degrees before cross-score scoring. The hardness index of the surface is determined based on the depth of the scoring lines and the degree of damage to the surface by the cutting tool 2, which indicates the quality of the surface pouring.

[0021] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A ground indenter hardness tester characterized by: The device includes a positioning plate and a cutting tool. The positioning plate has a pressure handle and a scoring groove on its bottom surface. The positioning plate is used to press against the ground to be tested. The cutting tool includes a blade shell and a blade body. The blade body is located inside the blade shell and has a position slot. The blade body has a spring and a pressure button. The pressure button is located in the position slot. The lower end of the blade body is the cutting head. When the pressure button is pressed onto the position slot, the cutting head extends out of the blade shell. The cutting head scratches the ground through the scoring groove on the positioning plate to measure the hardness.

2. A ground hardness pachometer according to claim 1 wherein: A locking block is fixedly installed at the lower end of the blade shell, the blade body passes through the through hole on the locking block, the pressure button is installed on the fixing block above the blade body, and the spring is sleeved between the fixing block on the blade body and the locking block on the blade shell.

3. A ground hardness pachometer according to claim 2, wherein: The blade housing has multiple position slots located at different heights. Each position slot includes a vertical slot and multiple horizontal slots. After the button moves in the vertical slot, it is positioned in the horizontal slot.

4. A ground hardness pachometer according to claim 2, wherein: A retaining spring is also provided below the blade body, and the retaining spring is located on the blade body below the retaining block.

5. A floor scratch hardness gauge according to any one of claims 1 to 4, characterized in that: The grooves are multiple and arranged in parallel on the positioning plate.

6. A ground stylus hardness measuring instrument according to any one of claims 1 to 4, characterized in that: The positioning plate has an upward-facing flange on one side, and the pressure handle is provided on the flange.

7. A ground stylus hardness measuring instrument according to any one of claims 1 to 4, characterized in that: A sealing ball is provided at the top opening of the blade casing.

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