High-strength concrete hardness detection device

Abstract

The utility model discloses a high-strength concrete hardness detection device, and relates to the technical field of concrete test equipment, the high-strength concrete hardness detection device comprises a bottom plate and a resiliometer body, the upper end of the bottom plate is fixedly connected with a fixing frame, the interior of the fixing frame is rotatably connected with a first screw rod, one side of the first screw rod is provided with a first power assembly, and the other side of the first screw rod is provided with a second power assembly; a lifting plate is slidably connected to one side of the fixing frame. By the adoption of the structure, through the arrangement of the fixing frame, the first power assembly, the first screw rod, the lifting plate, the second power assembly, the second screw rod and the movable plate, the working height of the rebound apparatus body can be adjusted, the situation that potential safety hazards are increased due to manual operation with the help of a climbing ladder is avoided, and meanwhile due to the fact that the rebound apparatus body is horizontally fixed to the movable plate, the working efficiency is improved. When the rebound apparatus body works, the bouncing rod can be effectively prevented from deviating, and the accuracy of each time of detection is ensured, so that the accuracy of test data of the rebound apparatus is improved through improvement, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete testing equipment, and specifically relates to a high-strength concrete hardness testing device. Background Technology

[0002] There are currently several methods for testing concrete hardness. One of them is the rebound method, which involves using a rebound hammer to strike the concrete surface and measuring the distance the hammer bounces back. The hardness or strength of the concrete is estimated based on the correlation between the rebound value and the concrete strength. This method is simple, convenient, and low-cost, and is a commonly used testing method on site.

[0003] For example, Chinese patent CN215374808U discloses a rebound hammer, which relates to the field of concrete testing equipment. It includes a rebound hammer body, a striking rod at one end of the rebound hammer body, a positioning sleeve on the outer sleeve of the rebound hammer body, the positioning sleeve being slidably connected to the rebound hammer body, and a number of support rods along the circumference of the positioning sleeve, all of which are at the same distance from the rebound hammer body.

[0004] The rebound hammer mentioned above improves the accuracy of manual testing, but existing rebound hammers still have some shortcomings that need to be improved. Most rebound hammers are operated manually, and manual operation inevitably leads to the deviation of the impact rod during the measurement process. In addition, rebound hammers that are measured at high places often require the use of ladders to operate. The entire operation process is not only cumbersome but also unsafe and risky. Therefore, these unfavorable factors make it impossible to guarantee the test data and results. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a high-strength concrete hardness testing device to solve the problems in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A high-strength concrete hardness testing device includes a base plate and a rebound hammer body. A fixing frame is fixedly connected to the upper end of the base plate. A first screw is rotatably connected inside the fixing frame. A first power component is provided on one side of the first screw. A lifting plate is slidably connected to one side of the fixing frame. One side of the lifting plate is threadedly connected to the first screw. A second screw is rotatably connected inside the lifting plate. A second power component is provided on one side of the second screw. A moving plate is slidably connected to one side of the lifting plate. One side of the moving plate is threadedly connected to the second screw. An installation groove is opened at one end of the lifting plate. An installation block is inserted into the installation groove. The installation block is fixedly connected to the lower part of the rebound hammer body. A pulling component is provided on one side of the moving plate. The installation block is fixedly connected to the installation groove through the pulling component.

[0008] As a preferred technical solution, a first sliding groove is provided on one side of the fixing frame, the first screw is rotatably connected inside the first sliding groove, one side of the lifting plate is slidably connected to the first sliding groove, the first power component includes a first motor, the first motor is fixedly connected to the upper side of the fixing frame, the output end of the first motor is fixedly connected to a first gear, one side of the first gear is meshed with a second gear, and the second gear is fixedly connected to the first screw.

[0009] As a preferred technical solution, a second sliding groove is provided on one side of the lifting plate, the second screw is rotatably connected inside the second sliding groove, one side of the moving plate is slidably connected to the second sliding groove, the second power component includes a second motor, the second motor is fixedly connected to one end of the lifting plate, a third gear is fixedly connected to the output end of the second motor, a fourth gear is meshed on one side of the third gear, and the fourth gear is fixedly connected to the second screw.

[0010] As a preferred technical solution, a U-shaped plate is fixedly connected to one side of the lower end of the rebound hammer body, and the mounting block is fixedly connected to the bottom end of the U-shaped plate.

[0011] As a preferred technical solution, the pulling component includes a spring, which is fixedly connected to one side of the inside of the lifting plate. One end of the spring is fixedly connected to a positioning block, one side of the positioning block is movably connected to a mounting block, one end of the positioning block is fixedly connected to a pull rod, and one end of the pull rod is fixedly connected to a pull plate.

[0012] In summary, the present invention has the following main advantages:

[0013] First, this utility model, by setting up a fixed frame, a first power component, a first screw, a lifting plate, a second power component, a second screw, and a moving plate, can adjust the height of the rebound hammer body when it is working, avoiding the increased safety hazards caused by manual operation using a ladder. At the same time, since the rebound hammer body is horizontally fixed on the moving plate, it can effectively prevent the impact rod from deviating when the rebound hammer body is working, ensuring the accuracy of each test. Therefore, through the improvement, the accuracy of the rebound hammer test data is improved and the testing efficiency is increased.

[0014] Secondly, this utility model connects an installation block to the bottom of the rebound hammer body, and an installation groove is opened on the moving plate. A pulling component is provided on one side of the moving plate. The installation block and the installation groove are no longer fixed by the pulling component, so that the rebound hammer body can be removed for use or maintenance, thereby improving the flexibility and practicality of the concrete hardness testing device. Attached Figure Description

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

[0016] Figure 2 This is a utility model Figure 1 A magnified structural diagram at point A;

[0017] Figure 3 This is a partial structural diagram of the lifting plate of this utility model;

[0018] Figure 4 This is a utility model Figure 3 A magnified structural diagram at point B.

[0019] Reference numerals: 1. Base plate; 2. Fixing frame; 3. First screw; 4. First power assembly; 41. First motor; 42. First gear; 43. Second gear; 5. First slide groove; 6. Lifting plate; 7. Rebound device body; 8. Second screw; 9. Second power assembly; 91. Second motor; 92. Third gear; 93. Fourth gear; 10. Second slide groove; 11. Moving plate; 12. U-shaped plate; 13. Mounting block; 14. Mounting groove; 15. Pulling assembly; 151. Positioning block; 152. Spring; 153. Pull rod; 154. Pull plate. Detailed Implementation

[0020] Example

[0021] refer to Figures 1 to 4 This embodiment describes a high-strength concrete hardness testing device, comprising a base plate 1 and a rebound hammer body 7. It should be noted that the rebound hammer is a digital rebound hammer capable of recording data for later viewing. A fixing frame 2 is fixedly connected to the upper end of the base plate 1, and a support leg is installed at the lower end of the base plate 1. Universal wheels are rotatably mounted on the bottom ends of the support legs. A handrail is installed on one side of the base plate 1 to facilitate pushing the base plate 1 and moving the rebound hammer body 7. A first screw 3 is rotatably connected inside the fixing frame 2. A first power assembly 4 is provided on one side of the first screw 3. A lifting plate 6 is slidably connected to one side of the fixing frame 2. One side of the lifting plate 6 is threadedly connected to the first screw 3. The lifting plate 6 rotates internally. A second screw 8 is connected, and a second power assembly 9 is provided on one side of the second screw 8. A moving plate 11 is slidably connected to one side of the lifting plate 6, and one side of the moving plate 11 is threadedly connected to the second screw 8. A mounting groove 14 is opened at one end of the lifting plate 6, and a mounting block 13 is inserted into the inside of the mounting groove 14. The mounting block 13 is fixedly connected to the bottom of the rebound hammer body 7. A pulling assembly 15 is provided on one side of the moving plate 11, and the mounting block 13 is fixedly connected to the mounting groove 14 through the pulling assembly 15. With the above settings, no manual operation is required, reducing the intensity of manual labor, reducing the interference of human error, ensuring the objectivity and reliability of the measurement results, and significantly improving the detection efficiency.

[0022] refer to Figure 1-2A first sliding groove 5 is provided on one side of the fixed frame 2. A first screw 3 is rotatably connected inside the first sliding groove 5. One side of the lifting plate 6 is slidably connected to the first sliding groove 5. The first power assembly 4 includes a first motor 41, which is fixedly connected to the upper side of the fixed frame 2. A first gear 42 is fixedly connected to the output end of the first motor 41. A second gear 43 is meshed with one side of the first gear 42. The second gear 43 is fixedly connected to the first screw 3. By providing the first sliding groove 5 on the fixed frame 2, the lifting plate 6 can slide on the fixed frame 2. The first power assembly 4 is provided so that the first motor 41 drives the first gear 42 to rotate, the first gear 42 drives the second gear 43 to rotate, and the second gear 43 drives the first screw 3 to rotate, thereby providing power for the lifting plate 6 to move the rebounder body 7 and adjusting the height of the rebounder body 7.

[0023] refer to Figure 3-4 A second slide groove 10 is provided on one side of the lifting plate 6. A second screw 8 is rotatably connected inside the second slide groove 10. One side of the moving plate 11 is slidably connected to the second slide groove 10. The second power assembly 9 includes a second motor 91, which is fixedly connected to one end of the lifting plate 6. A third gear 92 is fixedly connected to the output end of the second motor 91. A fourth gear 93 is meshed on one side of the third gear 92. The fourth gear 93 is fixedly connected to the second screw 8. By providing a second slide groove 10 on the lifting plate 6, the moving plate 11 can slide on the lifting plate 6. The second power assembly 9 is provided so that the second motor 91 drives the third gear 92 to rotate, the third gear 92 drives the fourth gear 93 to rotate, and the fourth gear 93 drives the second screw 8 to rotate, thereby providing power to the rebound hammer body 7 to make it contact the wall for testing.

[0024] refer to Figure 4 A U-shaped plate 12 is fixedly connected to one side of the lower end of the rebounder body 7, and a mounting block 13 is fixedly connected to the bottom end of the U-shaped plate 12. By fixing the U-shaped plate 12 under the rebounder body 7 and fixing the mounting block 13 on the U-shaped plate 12, and fixing a level on one side of the U-shaped plate 12, the rebounder body 7 is ensured to be installed horizontally.

[0025] refer to Figure 4The pulling assembly 15 includes a spring 152, which is fixedly connected to one side of the inside of the lifting plate 6. One end of the spring 152 is fixedly connected to a positioning block 151, one side of the positioning block 151 is movably connected to the mounting block 13, and one end of the positioning block 151 is fixedly connected to a pull rod 153. One end of the pull rod 153 is fixedly connected to a pull plate 154. By setting the pulling assembly 15, when it is necessary to remove the rebound spring body 7 from the moving plate 11, the pull plate 154 drives the pull rod 153 to move, the spring 152 deforms, and the pull rod 153 drives the positioning block 151 to move, so that the positioning block 151 leaves the mounting block. The mounting block 13 is separated from the mounting groove 14 by the positioning block 151. When reinstalling, the mounting block 13 is inserted into the mounting groove 14, the pull plate 154 is released, and the spring 152 returns to its original position, so that the mounting block 13 is connected and fixed to the mounting groove 14. It should be noted that a locking screw is also threaded on one side of the pull plate 154. A round block is fixed at one end of the locking screw, and a rubber pad is fixed at the other end. After the positioning block 151 fixes the mounting block 13 to the mounting groove 14, the round block is rotated to drive the locking screw to make the rubber pad contact the moving plate 11, preventing the pull plate 154 from sliding, which is conducive to the installation of the rebound spring body 7.

[0026] Operating principle and advantages: The base plate 1 is moved to the testing area by the handrail frame. According to the test height, the first motor 41 drives the first gear 42 to rotate, the first gear 42 drives the second gear 43 to rotate, and the second gear 43 drives the first screw 3 to rotate, thereby moving the lifting plate 6 under the action of the first slide 5 to adjust the height of the rebound hammer body 7. Then, the second motor 91 drives the third gear 92 to rotate, the third gear 92 drives the fourth gear 93 to rotate, and the fourth gear 93 drives the second screw 8 to rotate, thereby moving the rebound hammer body 7 under the action of the second slide 10. This simulates the manual pushing of the rebound hammer body 7 to contact the concrete to test the hardness, thus effectively preventing the rebound rod from deviating, ensuring the accuracy of each test and improving the testing efficiency. When it is necessary to view the test data, the rebound hammer body 7 falls under the action of the first power component 4 and the first screw 3, pulling the pull plate 154 to move the pull rod 153, so that the pull rod 153 moves the positioning block 151 away from the mounting block 13. At this time, the rebound hammer body 7 can be removed for inspection, use or maintenance.

Claims

1. A high-strength concrete hardness testing device, comprising a base plate (1) and a rebound hammer body (7), characterized in that: A fixing frame (2) is fixedly connected to the upper end of the base plate (1). A first screw (3) is rotatably connected inside the fixing frame (2). A first power assembly (4) is provided on one side of the first screw (3). A lifting plate (6) is slidably connected to one side of the fixing frame (2). One side of the lifting plate (6) is threadedly connected to the first screw (3). A second screw (8) is rotatably connected inside the lifting plate (6). A second power assembly (9) is provided on one side of the second screw (8). A movable plate (11) is slidably connected to one side of the lifting plate (6). One side of the movable plate (11) is threadedly connected to the second screw (8). An installation groove (14) is provided at one end of the lifting plate (6). An installation block (13) is inserted into the inside of the installation groove (14). The installation block (13) is fixedly connected to the bottom of the rebounder body (7). A pulling component (15) is provided on one side of the movable plate (11). The installation block (13) is fixedly connected to the installation groove (14) through the pulling component (15).

2. The high-strength concrete hardness testing device according to claim 1, characterized in that: The fixing frame (2) has a first sliding groove (5) on one side, the first screw (3) is rotatably connected inside the first sliding groove (5), and one side of the lifting plate (6) is slidably connected to the first sliding groove (5).

3. The high-strength concrete hardness testing device according to claim 1, characterized in that: The first power assembly (4) includes a first motor (41), which is fixedly connected to one side of the upper end of the fixed frame (2). The output end of the first motor (41) is fixedly connected to a first gear (42), and a second gear (43) is meshed on one side of the first gear (42). The second gear (43) is fixedly connected to the first screw (3).

4. The high-strength concrete hardness testing device according to claim 1, characterized in that: A second slide groove (10) is provided on one side of the lifting plate (6), and the second screw (8) is rotatably connected inside the second slide groove (10). One side of the moving plate (11) is slidably connected to the second slide groove (10).

5. The high-strength concrete hardness testing device according to claim 4, characterized in that: The second power assembly (9) includes a second motor (91), which is fixedly connected to one side of the lifting plate (6). The output end of the second motor (91) is fixedly connected to a third gear (92), and a fourth gear (93) is meshed on one side of the third gear (92). The fourth gear (93) is fixedly connected to the second screw (8).

6. The high-strength concrete hardness testing device according to claim 1, characterized in that: A U-shaped plate (12) is fixedly connected to one side of the lower end of the rebounder body (7), and the mounting block (13) is fixedly connected to the bottom end of the U-shaped plate (12).

7. The high-strength concrete hardness testing device according to claim 1, characterized in that: The pulling assembly (15) includes a spring (152), which is fixedly connected to one side of the inside of the lifting plate (6). One end of the spring (152) is fixedly connected to a positioning block (151), one side of the positioning block (151) is movably connected to the mounting block (13), one end of the positioning block (151) is fixedly connected to a pull rod (153), and one end of the pull rod (153) is fixedly connected to a pull plate (154).

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