Concrete detection device for building construction

Abstract

The utility model discloses a concrete detection device for building construction, which belongs to the technical field of detection devices and comprises a base, four electric telescopic rods are fixedly connected to the base, a bearing frame is fixedly connected to the top ends of the electric telescopic rods, two sliding rails are fixedly connected to the bearing frame, and a moving box is slidably connected to the sliding rails. A rack is fixedly connected to the bearing frame, a motor is fixedly connected to the moving box, and a first rotating shaft is rotationally connected to the moving box. The device is provided with an intermittent mechanism, when a detector uses the device, the distance between measuring points in the horizontal direction does not need to be manually adjusted, operation is easy and convenient, and the measuring precision of a resiliometer is greatly improved; the rebounding instrument is simple in structure and convenient to operate, reliability of detection data is improved, the cam and the spring are matched, reciprocating of the rebounding instrument body is achieved, and therefore multiple times of measurement are achieved, it is structurally guaranteed that the pushing force of each time is basically the same, errors caused by different pushing force are eliminated, and the reliability of the detection data is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing devices, specifically a concrete testing device for building construction. Background Technology

[0002] Concrete is one of the most important materials in building structural engineering. Its quality directly affects the safety of the building structure. The performance indicators of concrete measured by concrete specimens often differ from the actual performance of the concrete within the structure. To reflect the true condition of the structural concrete, non-destructive testing methods or semi-destructive methods such as core drilling are often used to test the concrete strength. Increased attention to engineering quality, along with the rapid development and maturation of non-destructive testing technology, has led to its increasing application in construction projects. The rebound method, as a non-destructive testing method, tests the compressive strength of concrete without damaging structural components. It has not only become a means of detecting and analyzing engineering accidents but is also emerging as a reliable monitoring tool for engineering quality control and the use of buildings.

[0003] When using a rebound hammer to assess the strength of concrete structures, an array sampling method is typically required, meaning measurements need to be taken at multiple different points. By collecting multiple sets of data and calculating their average, a relatively accurate estimate of the concrete strength can be obtained. However, in practice, the use of handheld rebound hammers is often accompanied by errors due to human factors. Operators may not be able to precisely control the spacing of the measurement points, nor can they guarantee that the applied pressure is completely consistent each time. These operational inconsistencies not only affect the accuracy of the measurement results but may also create hidden dangers in the safety assessment of concrete structures. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a concrete testing device for building construction, which solves the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a base, on which four electric telescopic rods are fixedly connected; a support frame is fixedly connected to the top of each electric telescopic rod; two slide rails are fixedly connected to the support frame; a movable box is slidably connected to the slide rails; a rack is fixedly connected to the support frame; a motor is fixedly connected to the movable box; a first rotating shaft is rotatably connected to the movable box; a coupling is coaxially fixedly connected to the output end of the motor; the coupling is coaxially fixedly connected to the first rotating shaft; an intermittent gear is coaxially fixedly connected to the first rotating shaft; the intermittent gear meshes with the rack; a first bevel gear is coaxially fixedly connected to one end of the first rotating shaft; a second rotating shaft is rotatably connected to the movable box; a second bevel gear is coaxially fixedly connected to the second rotating shaft; the second bevel gear meshes with the first bevel gear.

[0006] As a further embodiment of this utility model: a cam is fixedly connected to one end of the second rotating shaft, a reversing switch is fixedly connected to the support frame, limit switches are provided on both sides of the support frame, the reversing switch is connected to the motor, and the limit switches are connected to the motor.

[0007] As a further embodiment of this utility model: a fixed base is fixedly connected to the mobile box, and the rebound device body is slidably connected inside the fixed base.

[0008] As a further embodiment of this utility model: a push block is slidably connected inside the fixed base, and a spring is provided inside the fixed base, with both ends of the spring abutting against the fixed base and the push block respectively.

[0009] As a further embodiment of this utility model: the push block is fixedly connected to the body of the rebound spring, and the push block is movably connected to the cam.

[0010] As a further embodiment of this utility model, a reading port is provided on the push block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model is equipped with an intermittent mechanism, which achieves a high degree of automation. When using this device, the testing personnel do not need to manually adjust the spacing of the measurement points in the horizontal direction, which is not only easy to operate, but also greatly improves the accuracy of the rebound hammer measurement and the reliability of the test data.

[0013] 2. This utility model is equipped with a propulsion mechanism, which uses the cooperation of a cam and a spring to realize the reciprocating motion of the rebound spring body, thereby enabling multiple measurements. Structurally, it ensures that the force of each propulsion is basically the same, eliminating errors caused by different propulsion forces and further improving the reliability of the test data. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the mobile box of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the mobile box of this utility model.

[0017] In the diagram: 1. Base, 2. Electric telescopic rod, 3. Bearing frame, 4. Slide rail, 5. Moving box, 6. Rack, 7. Motor, 8. Shaft No. 1, 9. Coupling, 10. Intermittent gear, 11. Bevel gear No. 1, 12. Shaft No. 2, 13. Bevel gear No. 2, 14. Cam, 15. Reverse switch, 16. Limit switch, 17. Fixed seat, 18. Rebound spring body, 19. Push block, 20. Spring, 21. Reading port. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] like Figures 1-3 As shown, this utility model provides a technical solution:

[0020] A concrete testing device for building construction includes a base 1, on which four electric telescopic rods 2 are fixedly connected. A support frame 3 is fixedly connected to the top of each electric telescopic rod 2. Two slide rails 4 are fixedly connected to the support frame 3. A movable box 5 is slidably connected to the slide rails 4. A rack 6 is fixedly connected to the support frame 3. A motor 7 is fixedly connected to the movable box 5. A first rotating shaft 8 is rotatably connected to the movable box 5. A coupling 9 is coaxially fixedly connected to the output end of the motor 7. The coupling 9 is coaxially fixedly connected to the first rotating shaft 8. An intermittent gear 10 is coaxially fixedly connected to the first rotating shaft 8, and the intermittent gear 10 meshes with the rack 6. The first rotating shaft 8 is coaxially fixedly connected to one end of a first bevel gear 11. A second rotating shaft 12 is rotatably connected to the moving box 5. A second bevel gear 13 is coaxially fixedly connected to the second rotating shaft 12, and the second bevel gear 13 meshes with the first bevel gear 11. A cam 14 is fixedly connected to one end of the second rotating shaft 12. A reversing switch 15 is fixedly connected to the support frame 3. Limit switches 16 are provided on both sides of the support frame 3. The reversing switch 15 is connected to the motor 7, and the limit switches 16 are connected to the motor 7. A fixed seat 17 is fixedly connected to the moving box 5. The rebound spring body 18 is slidably connected inside the fixed seat 17. A push block 19 is slidably connected inside the fixed seat 17. A spring 20 is installed inside the fixed seat 17, with its two ends abutting against the fixed seat 17 and the push block 19 respectively. The push block 19 is fixedly connected to the rebound spring body 18 and movably connected to the cam 14. When the device is started, the motor 7 starts to rotate, and the first rotating shaft 8 also rotates accordingly. The intermittent gear 10 on the first rotating shaft 8 also rotates accordingly, while the rack 6 meshing with it remains stationary. Thus, the moving box 5 begins to move intermittently on the support frame 3. When the moving box 5 stops intermittently, the first bevel gear 11 also rotates with the rotation of the first rotating shaft 8, and the rack 6 meshing with it... The second bevel gear 13 also rotates, which in turn drives the second rotating shaft 12 to rotate, which in turn drives the cam 14 to rotate. The cam 14 pushes the push block 19, and the rebound meter body fixed to the push block 19 also moves towards the wall in the fixed seat 17. Under the action of the spring 20 in the fixed seat 17, it returns to the initial position, completing one measurement. When the moving box 5 triggers the limit switch 16, the motor 7 stops working. After adjusting the height by the electric telescopic rod 2, the reversing switch 15 is turned, and the motor 7 reverses. The above process is repeated to obtain another set of measurement data. The average value is the strength of the concrete of the wall at that position.

[0021] The push block 19 has a reading port 21, which can be used to observe and read the parameters on the rebound spring body 18.

[0022] The working principle of this utility model is as follows:

[0023] When the device is started, motor 7 begins to rotate, and shaft 8 rotates accordingly. The intermittent gear 10 on shaft 8 also rotates, while the rack 6 meshing with it remains stationary. The moving box 5 then begins to move intermittently on the support frame 3. When the moving box 5 intermittently stops, bevel gear 11 rotates along with shaft 8, and bevel gear 13 meshing with it also rotates, thereby driving shaft 12 to rotate, which in turn drives cam 14 to rotate. Cam 14 pushes push block 19, which is fixed to push block 19. The rebound hammer body moves towards the wall within the fixed base 17 and returns to the initial position under the action of the spring 20 within the fixed base 17, completing one measurement. The parameters on the rebound hammer body 18 can be observed and read through the opening reading port 21. When the moving box 5 triggers the limit switch 16, the motor 7 stops working. After adjusting the height by the electric telescopic rod 2, the reversing switch 15 is turned, and the motor 7 reverses. The above process is repeated to obtain another set of measurement data. The average value is the strength of the concrete in the wall at that location.

[0024] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A concrete testing device for building construction, characterized in that, include: A base (1) is provided, on which four electric telescopic rods (2) are fixedly connected. A support frame (3) is fixedly connected to the top of each electric telescopic rod (2). Two slide rails (4) are fixedly connected to the support frame (3). A movable box (5) is slidably connected to the slide rails (4). A rack (6) is fixedly connected to the support frame (3). A motor (7) is fixedly connected to the movable box (5). A rotating shaft (8) is rotatably connected to the movable box (5). A coupling is coaxially fixedly connected to the output end of the motor (7). The coupling (9) is coaxially fixedly connected to the first rotating shaft (8). An intermittent gear (10) is coaxially fixedly connected to the first rotating shaft (8). The intermittent gear (10) meshes with the rack (6). A first bevel gear (11) is coaxially fixedly connected to one end of the first rotating shaft (8). A second rotating shaft (12) is rotatably connected to the moving box (5). A second bevel gear (13) is coaxially fixedly connected to the second rotating shaft (12). The second bevel gear (13) meshes with the first bevel gear (11).

2. The concrete testing device for building construction according to claim 1, characterized in that: A cam (14) is fixedly connected to one end of the second rotating shaft (12), a reversing switch (15) is fixedly connected to the support frame (3), and limit switches (16) are provided on both sides of the support frame (3). The reversing switch (15) is connected to the motor (7), and the limit switch (16) is connected to the motor (7).

3. The concrete testing device for building construction according to claim 2, characterized in that: A fixed base (17) is fixedly connected to the mobile box (5), and the rebound device body (18) is slidably connected inside the fixed base (17).

4. A concrete testing device for building construction according to claim 3, characterized in that: A push block (19) is slidably connected inside the fixed base (17), and a spring (20) is provided inside the fixed base (17). The two ends of the spring (20) abut against the fixed base (17) and the push block (19) respectively.

5. A concrete testing device for building construction according to claim 4, characterized in that: The push block (19) is fixedly connected to the rebound spring body (18), and the push block (19) is movably connected to the cam (14).

6. A concrete testing device for building construction according to claim 5, characterized in that: The push block (19) is provided with a reading port (21).

Images