A rebound hammer auxiliary device for concrete detection

Abstract

The utility model discloses a rebound apparatus auxiliary device for concrete detection relates to concrete detection technical field, including the outer wall, the bottom fixedly connected with the abutment block of outer wall, the included angle between abut but block and between is ninety degrees, the lateral wall fixed mounting of outer wall has the mounting panel, the inside of mounting panel is provided with the limit slot, the inside of limit slot is provided with the moving block, the one end fixedly connected with the retention block of integral arc of moving block, the inner wall of mounting panel is installed with the first drive block of can rotate, the outer wall of first drive block is hinged with the second drive block, in the utility model, through setting up two movable retention block in device to fix rebound apparatus, make device can be applicable to rebound apparatus of different size, increase device application scope simultaneously, still increase the practicability of device, and the included angle of setting up outer wall and abutment block is ninety degrees, and rebound apparatus can also be ensured to use accurately.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, specifically to an auxiliary device for a concrete rebound hammer. Background Technology

[0002] The rebound method is a commonly used method for on-site testing of the compressive strength of concrete, and its core tool is the concrete rebound hammer. According to the "Technical Standard for On-site Testing of Concrete Structures" (GB / T 50344-2019), the impact rod of the rebound hammer must be perpendicular to the concrete wall surface; otherwise, the rebound value will be distorted due to the deviation in impact energy, affecting the accuracy of the strength assessment. Currently, rebound hammers mainly rely on manual hand operation, and the verticality depends entirely on visual judgment and hand control, which has obvious shortcomings: differences in the experience and physical strength of the testers can easily cause the instrument to tilt, and the verticality deviation of manual operation can reach 3°-8°, with the rebound value error reaching ±10%; when facing uneven areas of the wall, it is difficult for the manual to ensure that the impact rod fits tightly, which can easily result in "false rebound" and reduce the reliability of the test. While existing rebound hammer auxiliary devices attempt to address the perpendicularity issue, they generally suffer from poor dimensional adaptability: rebound hammers on the market are categorized into medium and heavy-duty models, and existing devices mostly employ specialized clamping structures with fixed dimensions or narrow adjustment ranges, making them incompatible with different models. Some devices claiming to be adjustable either cause rebound hammer misalignment due to unilateral fixation, or require cumbersome disassembly of components for adjustment, and lack a real-time perpendicularity monitoring mechanism, thus failing to meet accuracy requirements. In view of this, an auxiliary device for a concrete rebound hammer is provided to overcome the above-mentioned defects. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary device for a concrete rebound hammer, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides an auxiliary device for a concrete rebound hammer, including an outer wall. A contact block is fixedly connected to the bottom of the outer wall, and the angle between the contact block and the contact block is 90 degrees. An installation plate is fixedly installed on the side wall of the outer wall. A limiting groove is formed inside the installation plate, and a moving block is arranged inside the limiting groove. One end of the moving block is fixedly connected to a fixed block that is arc-shaped. A first rotatable driving block is installed on the inner wall of the installation plate. A second driving block is hinged to the outer wall of the first driving block, and the other end of the second driving block is hinged to the side wall of the moving block.

[0005] Furthermore, the specific number of the second driving blocks is two, and the two second driving blocks are symmetrically arranged in the initial state.

[0006] Furthermore, the specific number of the retaining blocks is two, the two retaining blocks are arranged symmetrically, and a rubber pad is fixedly installed on the inner wall of the retaining blocks.

[0007] Furthermore, a ratchet is fixedly connected to one side of the first drive block, and a knob is fixedly connected to one side of the ratchet.

[0008] Furthermore, a rotatable pawl is installed on the outer wall of the mounting plate, a steering plate is fixedly installed on one side of the pawl, and a return spring is fixedly connected between the steering plate and the pawl.

[0009] Furthermore, the end of the pawl is initially attached to the outer wall of the ratchet.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The rebound hammer is fixed by two movable retaining blocks in the device, which makes the device applicable to rebound hammers of different sizes. This increases the applicability and practicality of the device. At the same time, setting the angle between the outer wall and the contact block to 90 degrees ensures that the rebound hammer can be used accurately. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front structure of this utility model; Figure 3 This is a schematic diagram of the rear structure of this utility model; Figure 4 for Figure 3 A magnified structural diagram of point A in the middle.

[0012] In the diagram: 1. Outer wall; 2. Abutting block; 3. Limiting groove; 4. Moving block; 5. Mounting plate; 6. Retaining block; 7. Rubber pad; 8. Knob; 9. Ratchet; 10. Pad; 11. Return spring; 12. Steering plate; 13. First drive block; 14. Second drive block. Detailed Implementation

[0013] 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.

[0014] Example 1 See Figures 1-4An auxiliary device for a concrete rebound hammer includes an outer wall 1. A contact block 2 is fixedly connected to the bottom of the outer wall 1, and the angle between the contact block 2 and the contact block 2 is 90 degrees. An installation plate 5 is fixedly installed on the side wall of the outer wall 1. A limiting groove 3 is opened inside the installation plate 5. A moving block 4 is arranged inside the limiting groove 3. One end of the moving block 4 is fixedly connected to a fixed block 6 that is arc-shaped. A first driving block 13 that can rotate is installed on the inner wall of the installation plate 5. A second driving block 14 is hinged to the outer wall 1 of the first driving block 13. The other end of the second driving block 14 is hinged to the side wall of the moving block 4.

[0015] The specific number of the second drive block 14 is two, and the two second drive blocks 14 are symmetrically arranged in the initial state. The specific number of the retaining block 6 is two, and the two retaining blocks 6 are symmetrically arranged. A rubber pad 7 is fixedly installed on the inner wall of the retaining block 6.

[0016] By setting the specific number of the second drive blocks 14 to two, and the two second drive blocks 14 being symmetrical in the whole, the two second drive blocks 14 can synchronously drive the two moving blocks 4 to move towards each other or relative to each other during the rotation of the first drive block 13.

[0017] A ratchet 9 is fixedly connected to one side of the first drive block 13, and a knob 8 is fixedly connected to one side of the ratchet 9. A rotatable pawl 10 is installed on the outer wall 1 of the mounting plate 5. A steering plate 12 is fixedly installed on one side of the pawl 10. A return spring 11 is fixedly connected between the steering plate 12 and the pawl 10. The end of the pawl 10 is attached to the outer wall 1 of the ratchet 9 in the initial state.

[0018] By setting a ratchet 9 fixedly connected to one side of the first drive block 13, and a knob 8 fixedly connected to one side of the ratchet 9, the user can rotate the knob 8 to drive the ratchet 9 and the first drive block 13 to rotate.

[0019] A rotatable pawl 10 is mounted on the outer wall 1 of the mounting plate 5, and the end of the pawl 10 is initially attached to the outer wall 1 of the ratchet 9, allowing the ratchet 9 to rotate smoothly in the clockwise direction without easily reversing after rotation. A directional plate 12 is fixedly mounted on one side of the pawl 10, and a return spring 11 is fixedly connected between the directional plate 12 and the pawl 10. This ensures that the pawl 10 remains attached to the outer wall 1 of the ratchet 9 under the elastic force of the return spring 11, preventing the ratchet 9 from easily reversing without human intervention. Figure 2 As shown, when the ratchet 9 rotates clockwise, the distance between the two outer walls 1 increases. When the ratchet 9 rotates counterclockwise, the distance between the two outer walls 1 decreases.

[0020] In addition, it should be noted that the rubber pad 7 is made of rubber, which allows the inner side of the outer wall 1 to be adapted to rebounders of different diameters through the elasticity of the rubber pad 7.

[0021] In practice, when using conventional auxiliary devices, users must use a rebound hammer that is compatible with the auxiliary device to use it smoothly because the size of the auxiliary device is fixed. If the device is replaced or the wrong one is carried, the normal use of the rebound hammer will be affected.

[0022] In this practical application, when using this device, the user only needs to place the rebounder between the two outer walls 1 and continuously rotate the knob 8 to achieve the adaptation between the outer wall and the rebounder.

[0023] During the fixing process, the rotation of knob 8 will drive the first drive block 13. After the first drive block 13 rotates, the two second drive blocks 14 hinged to its outer wall 1 will be driven to move. The other end of the second drive block 14 is hinged to the inner wall of the moving block 4. Therefore, the movement of the second drive block 14 will cause the moving block 4 to move as well. Thus, after the first drive block 13 rotates, the two fixed blocks 6 fixedly connected to one side of the two moving blocks 4 will start to move towards each other or relative to each other. When moving towards each other, the outer wall can be adapted to the rebound device.

[0024] Once fixed, the contact block 2 can be attached to the wall and a rebound hammer can be used.

[0025] The rebound hammer is fixed by two movable retaining blocks 6 in the device, which makes the device applicable to rebound hammers of different sizes. This increases the applicability and practicality of the device. At the same time, setting the angle between the outer wall 1 and the contact block 2 to 90 degrees can also ensure that the rebound hammer can be used accurately.

[0026] Working principle: When using conventional auxiliary devices, since the size of the auxiliary devices is fixed, users must use a rebound hammer that is compatible with the auxiliary device to use it smoothly. If the wrong device is used or the wrong device is carried, the normal use of the rebound hammer will be affected.

[0027] In this practical application, when using this device, the user only needs to place the rebounder between the two outer walls 1 and continuously rotate the knob 8 to achieve the adaptation between the outer wall 1 and the rebounder.

[0028] During the fixing process, the rotation of knob 8 will drive the first drive block 13. After the first drive block 13 rotates, the two second drive blocks 14 hinged to its outer wall 1 will be driven to move. The other end of the second drive block 14 is hinged to the inner wall of the moving block 4. Therefore, the movement of the second drive block 14 will cause the moving block 4 to move as well. Thus, after the first drive block 13 rotates, the two fixed blocks 6 fixedly connected to one side of the two moving blocks 4 will start to move towards each other or relative to each other. When moving towards each other, the outer wall 1 can be adapted to the rebound device.

[0029] Once fixed, the contact block 2 can be attached to the wall and a rebound hammer can be used.

[0030] The rebound hammer is secured by two movable retaining blocks 6, making the device suitable for rebound hammers of different sizes. This increases the device's applicability and practicality. Setting the angle between the outer wall 1 and the contact block 2 at 90 degrees ensures accurate operation. To increase the distance between the two outer walls 1 during future use, first release the anti-reverse action of the pawl 10 on the ratchet 9, then rotate the knob 8 clockwise, and finally restore the contact between the pawl 10 and the ratchet 9.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An auxiliary device for a concrete rebound hammer, comprising an outer wall (1), characterized in that, A contact block (2) is fixedly connected to the bottom of the outer wall (1). The angle between the contact block (2) and the contact block (2) is 90 degrees. An installation plate (5) is fixedly installed on the side wall of the outer wall (1). A limiting groove (3) is opened inside the installation plate (5). A moving block (4) is provided inside the limiting groove (3). A fixed fixing block (6) with an overall arc shape is fixedly connected to one end of the moving block (4). A first driving block (13) that can rotate is installed on the inner wall of the installation plate (5). A second driving block (14) is hinged to the outer wall (1) of the first driving block (13). The other end of the second driving block (14) is hinged to the side wall of the moving block (4).

2. The auxiliary device for a concrete rebound hammer as described in claim 1, characterized in that: The specific number of the second driving block (14) is two, and the two second driving blocks (14) are symmetrically arranged in the initial state.

3. The auxiliary device for a concrete rebound hammer as described in claim 2, characterized in that: The specific number of the retaining blocks (6) is two, and the two retaining blocks (6) are arranged symmetrically. A rubber pad (7) is fixedly installed on the inner wall of the retaining blocks (6).

4. The auxiliary device for a concrete rebound hammer as described in claim 3, characterized in that: A ratchet (9) is fixedly connected to one side of the first drive block (13), and a knob (8) is fixedly connected to one side of the ratchet (9).

5. The auxiliary device for a concrete rebound hammer as described in claim 4, characterized in that: A rotatable pawl (10) is installed on the outer wall (1) of the mounting plate (5). A direction plate (12) is fixedly installed on one side of the pawl (10). A return spring (11) is fixedly connected between the direction plate (12) and the pawl (10).

6. The auxiliary device for a concrete rebound hammer as described in claim 5, characterized in that: The end of the pawl (10) is initially attached to the outer wall (1) of the ratchet (9).

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