A concrete rebound apparatus

Abstract

This application relates to a concrete rebound hammer, which includes a concrete rebound hammer housing and a marking assembly mounted on the concrete rebound hammer housing. The marking assembly includes a connecting portion mounted on the concrete rebound hammer housing and a marking portion connected to the connecting portion and parallel to the axis of the concrete rebound hammer housing. The end of the marking portion away from the connecting portion has a paint head for marking on a wall. This application has the effect of facilitating operators to determine the location of measuring points in the testing area and ensuring that the measuring points are evenly distributed within the testing area.

Description

Technical Field

[0001] This application relates to the field of building material testing technology, and in particular to a concrete rebound hammer. Background Technology

[0002] A concrete rebound hammer is a portable non-destructive testing instrument used to test the surface strength of concrete. It is widely used in concrete quality assessment in construction engineering, bridges, roads, and other fields. It indirectly calculates the compressive strength of concrete by measuring the rebound value of the concrete surface.

[0003] According to relevant specifications, when inspecting components such as walls, at least 10 test zones are required, and 16 rebound values ​​should be recorded in each zone. Test points should be evenly distributed within the test zone, with a minimum distance of 20mm between adjacent test points. In practice, when determining the location of test points within a zone, operators use rulers and pens to mark each zone and test point. Due to the large number of test points, the marking process is cumbersome, time-consuming, and prone to dimensional errors. Utility Model Content

[0004] To facilitate operators in determining the location of measuring points within the testing area and to ensure that the measuring points are evenly distributed within the testing area, this application provides a concrete rebound hammer.

[0005] The concrete rebound hammer provided in this application adopts the following technical solution: A concrete rebound hammer includes a concrete rebound hammer housing and a marking assembly mounted on the concrete rebound hammer housing. The marking assembly includes a connecting portion mounted on the concrete rebound hammer housing and a marking portion connected to the connecting portion and parallel to the axial direction of the concrete rebound hammer housing. The end of the marking portion away from the connecting portion has a paint head for marking a wall.

[0006] By adopting the above technical solution, a marking component is set on the housing of the concrete rebound hammer. The marking part of the marking component is parallel to the axial direction of the housing of the concrete rebound hammer, and the end of the marking part has a paint head for marking the wall. After testing one measuring point, the next measuring point can be marked. This eliminates the need for operators to use tools such as rulers and pens when determining the position of measuring points in the test area, reducing marking time, facilitating operators to determine the position of measuring points in the test area, and ensuring that the measuring points are evenly distributed within the test area.

[0007] Optionally, the concrete rebound hammer housing has a fixing groove for sliding installation of the connecting part, the connecting part has a plunger hole and a ball spring plunger is installed in the plunger hole, and the fixing groove has annular limiting holes evenly spaced along the length direction on the inner wall for the plunger balls of the ball spring plunger to engage.

[0008] By adopting the above technical solution, the connecting part can be slidably installed in the fixing groove of the concrete rebound hammer housing, and the annular limiting hole on the inner wall of the fixing groove can cooperate with the ball spring plunger of the connecting part, so that the connecting part can be locked in the fixing groove. At the same time, the annular limiting holes on the inner wall of the fixing groove are evenly spaced along the length direction, so that the distance between the axis of the marking part connected to the connecting part and the axis of the concrete rebound hammer housing is adjustable, thereby adjusting the distance between two adjacent measuring points and improving the adaptability of the concrete rebound hammer.

[0009] Optionally, the concrete rebound hammer also includes a level installed on the concrete rebound hammer housing for calibrating horizontal and vertical positions, wherein the installation point of the level is at a 90° angle to the perpendicular line from the axis of the concrete rebound hammer housing and the axis of the fixing groove.

[0010] By adopting the above technical solution, a level is installed on the concrete rebound hammer housing, and the installation point of the level is at 90° to the perpendicular line of the concrete rebound hammer housing axis and the axis of the fixing groove. This not only ensures that the concrete rebound hammer axis is always perpendicular to the concrete test surface to reduce the probability of detection errors, but also ensures more accurate marking of the next horizontal or vertical test point.

[0011] Optionally, the distance between adjacent annular limiting holes is 10 mm.

[0012] By adopting the above technical solution, the distance between adjacent annular limiting holes is set to 10mm, so that when the connecting part slides in the fixed groove, the ball spring plunger of the connecting part locks with different annular limiting holes, and the distance between commonly used adjacent measuring points can be set.

[0013] Optionally, the marking portion has a T-shaped groove, and the connecting portion has a T-shaped slider that is adapted to the T-shaped groove.

[0014] By adopting the above technical solution, the T-shaped groove in the marking part and the T-shaped groove in the connecting part enable the marking part to slide and connect to the connecting part, thereby adjusting the distance from the end of the marking part to the wall to be inspected, and also facilitating the disassembly and replacement of the marking part.

[0015] Optionally, the T-shaped slider has a mounting threaded hole, and the marking part has a mounting through hole in which a mounting bolt that mates with the mounting threaded hole is installed.

[0016] By adopting the above technical solution, a connection structure between the T-shaped slider and the marking part of the connecting part is disclosed. The T-shaped slider and the marking part of the connecting part are connected by a threaded structure, which makes the connection strength ideal and prevents loosening.

[0017] Optionally, the end of the marking part away from the connecting part is provided with a marking groove along the length direction for the coating head to slide, and a pushing groove is provided on the inner wall of the marking groove away from the concrete rebound hammer housing, and the coating head is provided with a pushing rod passing through the pushing groove.

[0018] By adopting the above technical solution, a marking groove is provided at the end of the marking part away from the connecting part for the paint head to slide, and a push groove is opened on the inner wall of the marking groove for the push rod of the paint head to pass through, so that after the detection of one measuring point is completed, the operator can push the push rod of the paint head to mark the next measuring point.

[0019] Optionally, a first magnetic block is fixedly provided on the end face of the marking groove away from the paint head, and a second magnetic block is provided on the end of the paint head near the first magnet.

[0020] By adopting the above technical solution, a first magnetic block is fixedly set on the end face of the marking groove away from the paint head, and a second magnetic block is set on the end of the paint head close to the first magnet. After marking, the operator can push the paint head to reset so that the paint head is attracted to the first magnetic block in the marking groove, which facilitates subsequent marking operations.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. A concrete rebound hammer, wherein a marking component is installed on the housing of the concrete rebound hammer. The marking component includes a connecting part and a marking part parallel to the axis of the housing of the concrete rebound hammer. This allows the operator to mark the next measuring point without using tools such as rulers and pens after testing one measuring point. This makes it easier for the operator to determine the position of the measuring points in the measuring area and ensures that the measuring points are evenly distributed within the measuring area. 2. By opening a fixing groove in the housing of the concrete rebound hammer for sliding installation of the connecting part and setting annular limiting holes evenly spaced on the inner wall of the fixing groove, and setting a ball-head spring plunger in the connecting part, the distance between two adjacent measuring points can be adjusted, which helps to improve the adaptability of the concrete rebound hammer. 3. By installing a level on the concrete rebound hammer housing for calibrating horizontal and vertical positions, it helps to ensure that the axis of the concrete rebound hammer is perpendicular to the concrete test surface, and makes it more accurate to mark the next horizontal or vertical test point. Attached Figure Description

[0022] Figure 1 This is a front view of the concrete rebound hammer in the embodiments of this application.

[0023] Figure 2 This is a cross-sectional schematic diagram of the connection part and the fixing groove in an embodiment of this application.

[0024] Figure 3This is a top-view cross-sectional view of the connection part and the marking part in an embodiment of this application.

[0025] Figure 4 This is a cross-sectional schematic diagram of the connection part and the marking part in the front view of the embodiment of this application.

[0026] Figure 5 This is a partial cross-sectional schematic diagram of the marking part in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Concrete rebound hammer housing; 11. Fixing groove; 12. Annular limiting hole; 2. Marking assembly; 21. Connecting part; 211. Plunger hole; 212. Ball spring plunger; 2121. Plunger housing; 2122. Plunger spring; 2123. Plunger ball; 213. T-slider; 2131. Mounting threaded hole; 22. Marking part; 221. T-slide groove; 222. Mounting through hole; 223. Mounting bolt; 224. Marking groove; 225. Paint head; 2251. Second magnetic block; 2252. Push rod; 226. First magnetic block; 227. Push through groove; 3. Level. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses a concrete rebound hammer. (Refer to...) Figure 1 and Figure 2 The concrete rebound hammer includes a concrete rebound hammer housing 1, a marking assembly 2, and a level 3. The concrete rebound hammer housing 1 has a fixing groove 11, and annular limiting holes 12 are evenly spaced along the length of the inner wall of the fixing groove 11, with a distance of 10mm between adjacent annular limiting holes 12. In this embodiment, the level 3 is a conventional electronic level, capable of calibrating the horizontal and vertical positions of the concrete rebound hammer. Furthermore, the mounting point of the level 3 forms a 90° angle with the perpendicular line from the axis of the concrete rebound hammer housing 1 to the axis of the fixing groove 11, ensuring not only that the axis of the concrete rebound hammer is perpendicular to the concrete test surface, but also ensuring greater accuracy when marking the next horizontal or vertical test point.

[0030] Reference Figure 1 and Figure 2The marking component 2 includes a connecting part 21 slidably mounted in the fixing groove 11 and a marking part 22 connected to the connecting part 21. The marking part 22 is parallel to the axial direction of the concrete rebound hammer housing 1. The connecting part 21 is provided with a plunger hole 211 and a ball spring plunger 212 is installed in the plunger hole 211. In this embodiment, the axis of the plunger hole 211 is perpendicular to the axial direction of the fixing groove 11. The ball spring plunger 212 includes a plunger housing 2121, a plunger spring 2122 installed at one end in the plunger housing 2121, and a plunger ball 2123 installed in the plunger housing 2121 and connected to the other end of the plunger spring 2122. Under the action of the plunger spring 2122, the plunger ball 2123 always tends to protrude from the plunger housing 2121, so that the plunger ball 2123 can be engaged in the annular limiting hole 12 of the fixing groove 11, thereby limiting the connection part 21 and making the connection part 21 less prone to shaking.

[0031] refer to Figure 3 and Figure 4 The marking part 22 is provided with a T-shaped groove 221 at one end. The connecting part 21 has a T-shaped slider 213 that is adapted to the T-shaped groove 221 and a mounting threaded hole 2131 is provided in the T-shaped slider 213. The connecting part 21 is provided with mounting through holes 222 evenly spaced along the length direction and mounting bolts 223 that cooperate with the mounting threaded holes 2131 are provided in the mounting through holes 222. This allows the marking part 22 to slide and connect to the connecting part 21 to adjust its position. It is fixed by the cooperation of the mounting bolts 223 and the mounting threaded holes 2131. The connection strength is ideal and it is also convenient to disassemble and replace the marking part 22.

[0032] refer to Figure 1 and Figure 5 The marking part 22 has a marking groove 224 at its other end, and a paint head 225 is slidably mounted in the marking groove 224. A first magnetic block 226 is fixedly provided on the end face of the marking part 224 away from the paint head 225, and a second magnetic block 2251 is provided on the end of the paint head 225 near the first magnetic block. Furthermore, a push groove 227 is provided on the inner wall of the marking groove 224 away from the concrete rebound hammer housing 1. The paint head 225 is provided with a push rod 2252 passing through the push groove 227, so that after the detection of one measuring point is completed, the operator can mark the next measuring point by pushing the push rod 2252 of the paint head 225. After marking, the paint head 225 can be reset by pushing the paint head 225 so that the paint head 225 is attracted to the first magnetic block 226 in the marking groove 224, which facilitates subsequent marking operations.

[0033] The implementation principle of a concrete rebound hammer in this application embodiment is as follows: When the operator uses the concrete rebound hammer to test components such as walls, according to the direction of the next test point to be tested, the operator first adjusts the horizontal or vertical direction using the level 3. After testing the current test point, the operator pushes the paint head 225 to mark the next test point. In this way, the test points in a test area are marked and tested, so that the operator no longer needs to use tools such as rulers and pens when determining the position of test points in the test area, reducing the marking time, making it easier for the operator to determine the position of test points in the test area, and ensuring that the test points are evenly distributed within the test area.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete rebound hammer, characterized in that, The device includes a concrete rebound hammer housing (1) and a marking assembly (2) mounted on the concrete rebound hammer housing (1). The marking assembly (2) includes a connecting portion (21) mounted on the concrete rebound hammer housing (1) and a marking portion (22) connected to the connecting portion (21) and parallel to the axial direction of the concrete rebound hammer housing (1). The end of the marking portion (22) away from the connecting portion (21) has a paint head (225) for marking the wall.

2. The concrete rebound hammer according to claim 1, characterized in that, The concrete rebound hammer housing (1) has a fixing groove (11) for sliding installation of the connecting part (21). The connecting part (21) has a plunger hole (211) and a ball spring plunger (212) is installed in the plunger hole (211). The fixing groove (11) has annular limiting holes (12) evenly spaced along the length direction on the inner wall for the plunger balls (2123) of the ball spring plunger (212) to engage.

3. A concrete rebound hammer according to claim 2, characterized in that, It also includes a level (3) installed in the concrete rebound hammer housing (1) for calibrating horizontal and vertical positions, wherein the installation point of the level (3) is perpendicular to the axis of the concrete rebound hammer housing (1) and the axis of the fixing groove (11) at a 90° angle.

4. A concrete rebound hammer according to claim 2, characterized in that, The distance between adjacent annular limiting holes (12) is 10 mm.

5. A concrete rebound hammer according to claim 1, characterized in that, The marking part (22) has a T-shaped groove (221), and the connecting part (21) has a T-shaped slider (213) that is adapted to the T-shaped groove (221).

6. A concrete rebound hammer according to claim 5, characterized in that, The T-shaped slider (213) has a mounting threaded hole (2131), and the marking part (22) has a mounting through hole (222) and a mounting bolt (223) that mates with the mounting threaded hole (2131) is installed in the mounting through hole (222).

7. A concrete rebound hammer according to claim 1, characterized in that, The marking part (22) is provided with a marking groove (224) along the length direction at the end away from the connecting part (21) for the coating head (225) to slide. A pushing groove (227) is provided on the inner wall of the marking groove (224) away from the concrete rebound hammer housing (1). The coating head (225) is provided with a pushing rod (2252) that passes through the pushing groove (227).

8. A concrete rebound hammer according to claim 7, characterized in that, A first magnetic block (226) is fixedly provided on the end face of the marking groove (224) away from the paint head (225), and a second magnetic block (2251) is provided on the end of the paint head (225) near the first magnet.

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