Equipment for detecting strength of concrete material

Abstract

The utility model relates to the technical field of concrete material strength detection, and discloses a device for concrete material strength detection, which comprises a rebound apparatus arranged on the inner side of a pressing plate, a loop bar is fixedly arranged on the inner side of the pressing plate close to the top end, a connecting rod is inserted in the loop bar, one end of the connecting rod is fixedly provided with a propping plate, and the propping plate is fixedly provided with a pressing plate. A detection opening is formed in the abutting plate, a spring is fixedly connected between the other end of each connecting rod and the inner wall of the corresponding sleeve rod, a connecting plate is fixedly installed at the position, close to the bottom end, of the inner side of the abutting plate, a holding rod is installed at the bottom end of the connecting plate, and the number of the sleeve rods and the number of the connecting rods are both two. Through the limiting of the pressing plate, the sleeve rod, the connecting rod and the pressing plate, the rebound apparatus can be always kept vertical when extruding the surface of concrete, so that the accuracy of the rebound apparatus on the concrete detection value is greatly improved, and the detection precision is ensured.

Description

Technical Field

[0001] This utility model relates to the field of concrete material strength testing technology, specifically to a device for testing the strength of concrete materials. Background Technology

[0002] In the field of construction engineering, concrete strength testing is a crucial step in ensuring the safety and quality of engineering structures. Accurate assessment of concrete strength is essential for determining the load-bearing capacity and durability of buildings, as well as for developing reasonable maintenance and reinforcement plans. Currently, the rebound hammer, as a non-destructive testing tool, is widely used in concrete strength testing due to its advantages such as ease of operation, fast testing speed, and low cost.

[0003] Traditional rebound hammer operation relies on the operator directly gripping the hammer body, bringing its tip into contact with the concrete surface to apply pressure. The concrete strength is then estimated by measuring the distance the rebound bar travels after impacting the concrete surface. However, due to the lack of an effective vertical guidance and positioning mechanism, it's difficult for the operator to ensure the rebound hammer remains perpendicular to the concrete surface. Even slight hand tremors, uneven pressure application, or directional deviations can easily cause the rebound hammer to tilt while pressing the concrete surface. This tilt not only alters the contact angle between the rebound bar and the concrete surface, affecting the accuracy of the rebound distance measurement, but also causes uneven force distribution, further exacerbating the error in the test results. Inaccurate rebound hammer readings can mislead the assessment of concrete strength, consequently affecting the safety assessment of engineering structures and the formulation of subsequent treatment measures, posing potential quality hazards and safety risks to construction projects. Therefore, we propose a device for testing the strength of concrete materials. Utility Model Content

[0004] The purpose of this invention is to provide a device for testing the strength of concrete materials, thereby solving the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for testing the strength of concrete materials, comprising a rebound hammer installed inside a pressing plate, a sleeve rod fixedly installed near the top of the pressing plate, a connecting rod inserted into the sleeve rod, a stop plate fixedly installed at one end of the connecting rod, a detection port opened on the stop plate, a spring fixedly connected between the other end of the connecting rod and the inner wall of the sleeve rod, a connecting plate fixedly installed near the bottom of the stop plate, and a gripping rod installed at the bottom of the connecting plate.

[0006] Preferably, there are two sleeve rods and two connecting rods. The outer wall of the connecting rod is provided with a limiting groove, and the inner wall of the sleeve rod is fixedly installed with a limiting slide plate. The limiting slide plate and the limiting groove are slidably connected. By setting the limiting slide plate and the limiting groove, the connecting rod can be limited to prevent the connecting rod from detaching from the sleeve rod.

[0007] Preferably, one end of the rebound hammer is fixedly installed with a mounting plate, and the inner side of the pressing plate is provided with a mounting slot. The mounting plate is snapped into the mounting slot, and the mounting plate is detachably connected to the pressing plate by bolts, which facilitates the disassembly and assembly of the rebound hammer by personnel.

[0008] Preferably, a pad is fixedly installed on the outside of the pressing plate, and the handle is detachably connected to the connecting plate by bolts. By setting the pad, hard contact between the person's hand and the pressing plate can be avoided.

[0009] Preferably, a grip sleeve is fixedly fitted on the outer wall of the grip bar. Both the grip sleeve and the pad are made of wear-resistant rubber. By setting the grip sleeve, the friction between the user's hand and the grip bar can be increased.

[0010] Preferably, the outer side of the support plate is provided with a toothed groove one near both sides, and the outer side of the support plate is provided with a toothed groove two near the top and bottom. The toothed groove one and the toothed groove two are arranged perpendicularly. By setting the toothed groove one and the toothed groove two, the friction between the base plate and the concrete surface can be increased, thereby improving the stability of the rebound hammer during the pressing test.

[0011] This invention provides a device for testing the strength of concrete materials. This device for testing the strength of concrete materials has the following advantages:

[0012] (1) The equipment for testing the strength of concrete materials can keep the rebound hammer vertical when it is pressing the concrete surface by limiting the pressing plate, sleeve rod, connecting rod and pressing plate, thereby greatly improving the accuracy of the rebound hammer test value of concrete and ensuring the test accuracy.

[0013] (2) The device for testing the strength of concrete materials can increase the friction between the base plate and the concrete surface by setting tooth groove one and tooth groove two, thereby improving the stability of the rebound hammer during the pressing test. It has a simple structure and strong practicality. Attached Figure Description

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

[0015] Figure 2 This is a side sectional view of the present invention.

[0016] Figure 3 This is a schematic cross-sectional view of the top of the sleeve rod of this utility model;

[0017] Figure 4 This utility model Figure 2 Enlarged structural diagram of section A in the middle;

[0018] Figure 5 This utility model Figure 3 Enlarged structural diagram of section B.

[0019] In the diagram: 1. Rebound spring; 2. Press plate; 3. Abutment plate; 4. Sleeve rod; 5. Connecting rod; 6. Mounting plate; 7. Mounting slot; 8. Press pad; 9. Connecting plate; 10. Grip rod; 11. Grip sleeve; 12. Tooth groove one; 13. Tooth groove two; 14. Limiting slide plate; 15. Limiting slide groove; 16. Spring; 17. Detection port. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] As attached Figure 1-5 As shown, this utility model provides a technical solution, a device for testing the strength of concrete materials, including a rebound hammer 1 installed inside the pressing plate 2, a sleeve rod 4 fixedly installed near the top of the inner side of the pressing plate 2, a connecting rod 5 inserted into the sleeve rod 4, a stop plate 3 fixedly installed at one end of the connecting rod 5, a detection port 17 opened on the stop plate 3, a spring 16 fixedly connected between the other end of the connecting rod 5 and the inner wall of the sleeve rod 4, a connecting plate 9 fixedly installed near the bottom of the inner side of the stop plate 3, and a gripping rod 10 installed at the bottom of the connecting plate 9.

[0024] Furthermore, there are two of each of the sleeve rod 4 and the connecting rod 5. The outer wall of the connecting rod 5 is provided with a limiting groove 15, and the inner wall of the sleeve rod 4 is fixedly installed with a limiting slide plate 14. The limiting slide plate 14 and the limiting groove 15 are slidably connected.

[0025] By setting the limiting slide plate 14 and the limiting slide groove 15, the connecting rod 5 can be limited to prevent it from disengaging from the sleeve rod 4.

[0026] Furthermore, a mounting plate 6 is fixedly installed at one end of the rebounder 1, and a mounting slot 7 is opened on the inner side of the pressing plate 2. The mounting plate 6 is snapped into the mounting slot 7. The mounting plate 6 is detachably connected to the pressing plate 2 by bolts, which facilitates personnel to disassemble and assemble the rebounder 1.

[0027] Furthermore, a pad 8 is fixedly installed on the outside of the pressing plate 2, and the handle 10 is detachably connected to the connecting plate 9 by bolts;

[0028] By setting up the pad 8, hard contact between the person's hand and the button 2 can be avoided.

[0029] Furthermore, a grip sleeve 11 is fixedly sleeved on the outer wall of the grip bar 10, and both the grip sleeve 11 and the pad 8 are made of wear-resistant rubber.

[0030] By setting up the grip sleeve 11, the friction between the user's hand and the grip bar 10 can be increased.

[0031] Furthermore, the outer side of the abutment plate 3 is provided with a toothed groove 12 near both sides, and the outer side of the abutment plate 3 is provided with a toothed groove 23 near the top and bottom. The toothed groove 12 and the toothed groove 23 are arranged perpendicularly.

[0032] By setting tooth groove 12 and tooth groove 13, the friction between the base plate and the concrete surface can be increased, thereby improving the stability of the rebound hammer 1 during the pressing test.

[0033] Specifically, in the above technical solution, when using the equipment for testing the strength of concrete materials, the rebound hammer 1 is first inserted into the mounting slot 7 using the mounting plate 6. Then, the mounting plate 6 is fixed in the mounting slot 7 with bolts. The rebound hammer 1 is then installed and fixed on the pressing plate 2. Next, the handle 10 is fixed to the connecting plate 9 with bolts. After installation, the operator can hold the handle 10 with one hand and align the detection port 17 on the pressing plate 3 with the position of the concrete to be tested, so that the pressing plate 3 is in contact with the concrete surface. Then, the operator presses the pressing plate 2 with the other hand, causing the pressing plate 2 to move the rebound hammer 1 towards the detection port 17. Finally, the rebound hammer 1 passes vertically through the detection port 17 and presses against the concrete surface, recording the value on the rebound hammer 1, thus completing one test. Through the above structure, the pressing plate 2, the sleeve rod 4, the connecting rod 5, and the limiting of the pressing plate 2 ensure that the rebound hammer 1 remains vertical when pressing against the concrete surface, thereby greatly improving the accuracy of the concrete test value of the rebound hammer 1 and ensuring the test precision.

[0034] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A device for testing the strength of concrete materials, comprising a rebound hammer (1) installed inside a pressing plate (2), characterized in that: A sleeve rod (4) is fixedly installed on the inner side of the push plate (2) near the top. A connecting rod (5) is inserted into the sleeve rod (4). A stop plate (3) is fixedly installed on one end of the connecting rod (5). A detection port (17) is opened on the stop plate (3). A spring (16) is fixedly connected between the other end of the connecting rod (5) and the inner wall of the sleeve rod (4). A connecting plate (9) is fixedly installed on the inner side of the stop plate (3) near the bottom. A gripping rod (10) is installed at the bottom of the connecting plate (9).

2. The device for testing the strength of concrete materials according to claim 1, characterized in that: The sleeve rod (4) and the connecting rod (5) are both two in number. The outer wall of the connecting rod (5) is provided with a limiting groove (15). The inner wall of the sleeve rod (4) is fixedly installed with a limiting slide plate (14). The limiting slide plate (14) is slidably connected to the limiting groove (15).

3. The device for testing the strength of concrete materials according to claim 1, characterized in that: The rebounder (1) has a mounting plate (6) fixedly installed at one end. The inner side of the push plate (2) has a mounting slot (7). The mounting plate (6) is snapped into the mounting slot (7). The mounting plate (6) is detachably connected to the push plate (2) by bolts.

4. The device for testing the strength of concrete materials according to claim 1, characterized in that: A pad (8) is fixedly installed on the outside of the pressing plate (2), and the grip (10) is detachably connected to the connecting plate (9) by bolts.

5. The device for testing the strength of concrete materials according to claim 1, characterized in that: The outer wall of the grip (10) is fixedly fitted with a grip sleeve (11), and both the grip sleeve (11) and the pad (8) are made of wear-resistant rubber.

6. The device for testing the strength of concrete materials according to claim 1, characterized in that: The abutment plate (3) has a toothed groove (12) on its outer side near both sides, and a toothed groove (13) on its outer side near the top and bottom. The toothed groove (12) and the toothed groove (13) are arranged perpendicularly.

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