Concrete member hardness detection device

Abstract

The utility model relates to the technical field of concrete hardness detection equipment, and discloses a concrete member hardness detection device which comprises a base and a rebound apparatus, the section of the base is of a trapezoidal structure, the roughness of the lower wall surface of the base is three hundred meshes, an L-shaped supporting block capable of moving up and down is arranged on the base, and the rebound apparatus is arranged on the L-shaped supporting block. A rotating block capable of rotating is arranged on the L-shaped supporting block, a mounting groove is formed in the rotating block in the radial direction, the rebound apparatus is arranged in the mounting groove, and a driving mechanism used for driving the rebound apparatus to move is arranged in the mounting groove; the driving mechanism comprises a miniature electric telescopic rod, a T-shaped sliding rail, a T-shaped sliding block, a threaded hole, a lead screw and a miniature servo motor. According to the utility model, through the driving mechanism, the rebound apparatus can be accurately controlled to move in the radial direction in the mounting groove, so that multi-point sampling is carried out, and the surface hardness of concrete at different positions can be detected and sampled.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete hardness detection equipment, in particular to a concrete component hardness detection device. Background Art

[0002] In the field of construction engineering, the detection of the hardness of concrete components is an important part of ensuring the quality of the project. The hardness of concrete components is directly related to the structural strength and durability of the building.

[0003] Traditional concrete component hardness testing mainly relies on manual handheld rebound testers. The operator needs to manually press the rebound tester sleeve on the surface of the concrete component, and then evaluate the hardness of the concrete component based on the data on the rebound tester. This method has many disadvantages. Since it requires continuous manual hand-holding and forceful operation, long-term work will make the operator very easy to fatigue and consume a lot of manpower. Moreover, it is difficult to ensure the consistency of the pressing force and angle each time with manual operation, resulting in large deviations in the test data and greatly reducing the comprehensiveness of the test. For example, when testing large-area concrete components, manual testing can only be performed point by point, which makes it difficult to achieve efficient multi-point sampling, and the detection efficiency is low, which cannot meet the needs of fast and accurate detection of large-scale projects. Therefore, there is an urgent need for a concrete component hardness detection device that can be automatically controlled, saves manpower, and improves detection efficiency and comprehensiveness to overcome the shortcomings of the existing technology.

[0004] To this end, we proposed a concrete component hardness testing device. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a concrete component hardness detection device, and to solve the above-mentioned problem.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A concrete component hardness testing device comprises a base and a rebound hammer, wherein the base is a structure with a trapezoidal cross section, and the roughness of the lower wall surface of the base is 300 meshes, an L-shaped support block capable of moving up and down is arranged on the base, a rotating block capable of rotating is arranged on the L-shaped support block, a mounting groove is radially provided on the rotating block, the rebound hammer is arranged inside the mounting groove, and a driving mechanism for driving the rebound hammer to move is arranged inside the mounting groove;

[0008] The driving mechanism includes a micro-electric telescopic rod, a T-shaped slide rail, a T-shaped slider, a threaded hole, a screw rod and a micro-servo motor, a T-shaped slide rail is provided on a side wall of the mounting groove close to the L-shaped support block, the T-shaped slide rail is slidably connected to the T-shaped slider inside, the T-shaped slide rail is rotatably connected to the screw rod inside through a bearing, a threaded hole is provided on the T-shaped slider, the T-shaped slider is threadedly connected to the screw rod through the threaded hole, the outer wall of the rotating block is installed with a micro-servo motor through a motor mounting frame, the output shaft of the micro-servo motor is fixedly connected to the screw rod, the side wall of the T-shaped slider away from the T-shaped slide rail is fixedly connected to the micro-electric telescopic rod, the rebound tester is sleeved with a mounting sleeve, the mounting sleeve is located inside the mounting groove, the mounting sleeve is an internally hollow cylindrical shape, and the upper end and front wall of the outer wall of the mounting sleeve are both hollow, and the movable end of the micro-electric telescopic rod is fixedly connected to the mounting sleeve.

[0009] An electric push rod for pushing the L-shaped support block to move up and down is fixedly installed on the upper wall of the base. The movable end of the electric push rod is fixedly connected to the bottom surface of the L-shaped support block. Four sleeve holes are symmetrically opened on the horizontal end of the L-shaped support block. Connecting rods are movably sleeved inside the sleeve holes. The lower end of the connecting rod is fixedly connected to the upper wall of the base.

[0010] The inner wall surface of the mounting sleeve is fixedly connected to a limiting block, which is an arc-shaped elastic block with a triangular cross section. A limiting groove is provided on the outer wall surface of the rebound tester at a position corresponding to the limiting block, and the limiting block is movably clamped in the inner part of the limiting groove.

[0011] A connecting column is connected to the center point of the rear wall of the rotating block through a bearing, and the end of the connecting column away from the rotating block is fixedly connected to the L-shaped supporting block, and eight linkage blocks are equidistantly installed on the rear wall of the rotating block in a circular array, and a servo motor is fixedly installed on the side wall of the L-shaped supporting block close to the rotating block, and a turntable is fixedly connected to the output end of the servo motor, and a pushing block is fixedly connected to the outer wall of the turntable, and a sensor for detecting the motion state of the rotating block is fixedly installed on the front wall of the vertical end of the L-shaped supporting block at a position corresponding to the rotating block.

[0012] The servo motor is located below the rotating block, and the outer wall surface of the rotating disk can contact the outer wall surface of the adjacent linkage block on the rotating block.

[0013] A slot is provided on the outer wall of the rotating block, a support block is fixedly installed on the horizontal end of the L-shaped support block corresponding to the position of the slot on the rotating block, an arc-shaped block is fixedly connected to the upper wall of the support block, the arc-shaped block is an arc-shaped block, and the arc-shaped block is movably connected to the inside of the slot.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model achieves the effect of accurately controlling the radial movement of the rebound tester in the installation slot for multi-point sampling by setting a driving mechanism composed of a micro electric telescopic rod, a T-shaped slide rail, a T-shaped slider, a threaded hole, a screw rod and a micro servo motor. The micro servo motor drives the screw rod to rotate, and the T-shaped slider slides radially along the T-shaped slide rail, driving the rebound tester to move smoothly in the installation slot. The mechanism can accurately control the movement path and position of the rebound tester, detect and sample the concrete surface at different positions, further expand the detection range, enrich the detection data, and thus improve the accuracy of the detection results, providing a more detailed and accurate basis for the quality assessment of concrete components, and effectively assisting the engineering quality control and structural safety judgment.

[0016] 2. The utility model achieves the effect of realizing circular multi-point automatic sampling and detection of concrete components by setting up a small servo motor, a turntable, a push block, a linkage block and a sensor, and working in coordination with a micro electric telescopic rod. The small servo motor drives the turntable to rotate, and the intermittent action of the push block and the linkage block causes the rotating block to drive the rebound tester to rotate at a set angle. The sensor monitors the rotation and triggers the micro electric telescopic rod to push the rebound tester to extend for detection, and reset after detection. Compared with traditional manual handheld operation, this automated sampling method not only saves manpower and reduces labor intensity, but also can obtain data from more detection points in the same time, improve detection efficiency and data integrity, make the detection results more representative and reliable, and help to more comprehensively and accurately evaluate the hardness of concrete components.

[0017] 3. The utility model achieves the effect of facilitating the rapid installation and disassembly of the rebound tester for daily maintenance and inspection by providing a movable snap-fit ​​structure between the limit block on the inner wall of the installation sleeve and the limit groove on the outer wall of the rebound tester. This snap-fit ​​method is simple and convenient, and the rebound tester and the device can be connected or separated without complex tools. In daily use, when the rebound tester needs to be calibrated, repaired or replaced, the operation can be completed quickly, reducing equipment downtime, improving the efficiency and maintainability of the device, ensuring the continuity of the detection work, while reducing maintenance costs and operating difficulties, and extending the overall service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the local structure of the base of the utility model;

[0020] Figure 3 This is a schematic diagram of the local structure of the rotating block of the utility model (rear view);

[0021] Figure 4 This is a half-section split diagram of the rotating block of the utility model;

[0022] Figure 5 It is a schematic diagram of the local structure of the rebound tester of the utility model.

[0023] In the figure: 1. base; 2. L-shaped support block; 3. electric push rod; 4. connecting rod; 5. sleeve hole; 6. rotating block; 7. connecting column; 8. servo motor; 9. turntable; 10. pushing block; 11. linkage block; 12. slot; 13. support block; 14. arc-shaped block; 15. mounting slot; 16. rebound tester; 17. micro electric telescopic rod; 18. mounting sleeve; 19. T-shaped slide rail; 20. T-shaped slide block; 21. limit block; 22. limit slot; 23. sensor; 24. threaded hole; 25. screw rod; 26. micro servo motor. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0025] Figure 1~Figure 5 It is the best embodiment of the utility model, and the following Figure 1 ~Attached Figure 5 The utility model is further described.

[0026] A concrete component hardness detection device comprises a base 1 and a rebound tester 16. The rebound tester 16 can detect the hardness of the concrete component. Specifically, a heavy hammer is driven by a spring. The heavy hammer strikes a striking rod in vertical contact with the concrete surface with constant kinetic energy, so that the local concrete is deformed and absorbs part of the energy, and the other part of the energy is converted into the rebound kinetic energy of the heavy hammer. When the rebound kinetic energy is completely converted into potential energy, the heavy hammer rebounds to a maximum distance. The instrument displays the maximum rebound distance of the heavy hammer in the name of a rebound value. The strength of the concrete component is estimated by the rebound value. This technology is a well-known technical means for technicians in this field and will not be discussed in detail here.

[0027] The base 1 has a trapezoidal cross-section and the roughness of the lower wall of the base 1 is 300 meshes. This shape allows the base 1 to have a larger contact area with the ground and is not easy to tip over. The lower wall of the base 1 is a rough surface, so the friction between the base 1 and the ground can be further increased. Therefore, when the equipment is used to detect the hardness of concrete components, the stability of the equipment can be guaranteed and the detection accuracy can be improved.

[0028] The base 1 is provided with an L-shaped support block 2 which can move up and down, the L-shaped support block 2 is provided with a rotatable rotating block 6, the rotating block 6 is provided with a mounting groove 15 in the radial direction, the rebound tester 16 is arranged inside the mounting groove 15, and the mounting groove 15 is provided with a driving mechanism for driving the rebound tester 16 to move.

[0029] The driving mechanism includes a micro electric telescopic rod 17, a T-shaped slide rail 19, a T-shaped slider 20, a threaded hole 24, a screw 25 and a micro servo motor 26. The inner wall of the mounting groove 15 close to the L-shaped support block 2 is provided with a T-shaped slide rail 19, the inner part of the T-shaped slide rail 19 is slidably connected with the T-shaped slider 20, the inner part of the T-shaped slide rail 19 is rotatably connected with the screw 25 through a bearing, a threaded hole 24 is provided on the T-shaped slider 20, and the T-shaped slider 20 is threadedly connected to the screw 25 through the threaded hole 24. The outer wall of the rotating block 6 is provided with a threaded hole 24. A micro servo motor 26 is installed on the motor mounting frame, and the output shaft of the micro servo motor 26 is fixedly connected to the screw rod 25. A micro electric telescopic rod 17 is fixedly connected to the wall of the T-shaped slider 20 away from the T-shaped slide rail 19. A mounting sleeve 18 is sleeved on the rebound tester 16. The mounting sleeve 18 is located inside the mounting groove 15. The mounting sleeve 18 is a hollow cylindrical shape inside, and the upper end and the front wall of the outer wall of the mounting sleeve 18 are both hollow. The movable end of the micro electric telescopic rod 17 is fixedly connected to the mounting sleeve 18.

[0030] When in use, by driving the micro servo motor 26 to drive the screw 25 to rotate clockwise or counterclockwise, the T-shaped slider 20 can be controlled to move radially back and forth inside the T-shaped slide rail 19, so that the rebound tester 16 can be driven to move back and forth inside the mounting groove 15 through the micro electric telescopic rod 17, thereby facilitating the rebound tester 16 to sample multiple points on the path, thereby improving the integrity of the test data and further improving the accuracy of the test results.

[0031] An electric push rod 3 for pushing the L-shaped support block 2 to move up and down is fixedly installed on the upper wall of the base 1. The movable end of the electric push rod 3 is fixedly connected to the bottom surface of the L-shaped support block 2. Four sleeve holes 5 are symmetrically opened on the horizontal end of the L-shaped support block 2. The inside of the sleeve holes 5 is movably sleeved with a connecting rod 4, and the lower end of the connecting rod 4 is fixedly connected to the upper wall of the base 1.

[0032] Since the L-shaped support block 2 is movably connected with the four connecting rods 4 on the base 1, the stability of the L-shaped support block 2 is ensured when the electric push rod 3 pushes the L-shaped support block 2 to move up and down during use.

[0033] The inner wall surface of the mounting sleeve 18 is fixedly connected to a limiting block 21 , which is an arc-shaped elastic block with a triangular cross-section. A limiting groove 22 is formed on the outer wall surface of the rebound hammer 16 at a position corresponding to the limiting block 21 , and the limiting block 21 is movably clamped in the limiting groove 22 .

[0034] Since the rebound hammer 16 is clamped together with the inner part of the mounting sleeve 18 through the limiting block 21, the rebound hammer 16 can be quickly installed and removed during use, thereby facilitating the maintenance and repair of the rebound hammer 16 during daily use.

[0035] A connecting column 7 is connected to the center point of the rear wall of the rotating block 6 through a bearing, and the end of the connecting column 7 away from the rotating block 6 is fixedly connected to the L-shaped support block 2. The rear wall of the rotating block 6 is equidistantly installed with eight linkage blocks 11 in a circular array. A servo motor 8 is fixedly installed on the side wall of the L-shaped support block 2 close to the rotating block 6. A turntable 9 is fixedly connected to the output end of the servo motor 8, and a push block 10 is fixedly connected to the outer wall of the turntable 9. A sensor 23 for detecting the motion state of the rotating block 6 is fixedly installed on the front wall of the vertical end of the L-shaped support block 2 corresponding to the position of the rotating block 6. The sensor 23 is a prior art. When in use, the sensor 23 emits infrared rays through the transmitting tube thereon, and the receiving tube detects whether the infrared rays change, thereby judging whether the rotating block 6 and the linkage block 11 are rotating. The servo motor 8 is located below the rotating block 6, and the outer wall of the turntable 9 can contact the outer wall of the adjacent linkage block 11 on the rotating block 6.

[0036] The outer wall surface of the rotating block 6 is provided with a slot 12, and a support block 13 is fixedly installed at the horizontal end of the L-shaped support block 2 corresponding to the position of the slot 12 on the rotating block 6. The upper wall surface of the support block 13 is fixedly connected with an arc-shaped block 14, which is an arc-shaped block and is movably connected to the inside of the slot 12. The side wall surface of the arc-shaped block 14 close to the slot 12 is a smooth surface, which can greatly reduce the friction resistance between the contact surface of the arc-shaped block 14 and the slot 12 when in use.

[0037] When the turntable 9 rotates, the pushing block 10 will be driven to enter between the adjacent linkage blocks 11 and push the rotating block 6 to rotate a specified angle through the linkage blocks 11. As the turntable 9 continues to rotate, the rotating block 6 can realize intermittent rotation. Therefore, when in use, the turntable 9 is driven to rotate by the servo motor 8. When the turntable 9 drives the pushing block 10 to rotate, the pushing block 10 will squeeze the linkage block 11 closest to the turntable 9 and move in the direction of rotation of the turntable 9 until the linkage block 11 is separated from the pushing block 10. At this time, the other linkage block 11 located on the rear side of the linkage block 11 in the direction of movement will move to the position of the front linkage block 11, so that as the turntable 9 drives the pushing block 10 to continue to rotate, it will push again The linkage block 11 on the rear side moves in the rotation direction of the turntable 9, and this can be repeated to control the rotating block 6 to make intermittent rotation on the L-shaped support block 2. When in use, when the sensor 23 on the L-shaped support block 2 detects the rotation of the rotating block 6 through infrared rays, the micro-electric telescopic rod 17 will push the rebound test hammer 16 to extend out of the installation groove 15 to detect the concrete component. After the detection is completed, the micro-electric telescopic rod 17 will bring the rebound test hammer 16 to reset. This can be repeated to complete the multi-point sampling and detection operation of the concrete component at this position. Compared with the traditional sampling and detection, which requires the staff to hold and press the sleeve of the rebound test hammer with force, the operation is more laborious. The equipment saves time and labor and greatly improves work efficiency.

Claims

1. A concrete component hardness testing device, comprising a base (1) and a rebound tester (16), wherein the base (1) is a structure with a trapezoidal cross section, and the roughness of the lower wall surface of the base (1) is 300 meshes, characterized in that: The base (1) is provided with an L-shaped support block (2) capable of moving up and down, the L-shaped support block (2) is provided with a rotatable rotating block (6), the rotating block (6) is provided with a mounting groove (15) in a radial direction, the rebound hammer (16) is arranged inside the mounting groove (15), and the mounting groove (15) is provided with a driving mechanism for driving the rebound hammer (16) to move; The driving mechanism comprises a micro electric telescopic rod (17), a T-shaped slide rail (19), a T-shaped slider (20), a threaded hole (24), a screw rod (25) and a micro servo motor (26); a T-shaped slide rail (19) is provided on a wall surface of one side of the mounting groove (15) close to the L-shaped support block (2); the T-shaped slide rail (19) is slidably connected to the T-shaped slider (20); the T-shaped slide rail (19) is rotatably connected to the screw rod (25) via a bearing; a threaded hole (24) is provided on the T-shaped slider (20); the T-shaped slider (20) is threadedly connected to the screw rod (25) via the threaded hole (24); the rotating block (6) A micro servo motor (26) is mounted on the outer wall surface via a motor mounting frame, an output shaft on the micro servo motor (26) is fixedly connected to a screw rod (25), a wall surface on one side of the T-shaped slider (20) away from the T-shaped slide rail (19) is fixedly connected to a micro electric telescopic rod (17), a mounting sleeve (18) is sleeved on the rebound tester (16), the mounting sleeve (18) is located inside the mounting groove (15), the mounting sleeve (18) is in the shape of a hollow cylinder, and the upper end and the front wall surface of the outer wall surface of the mounting sleeve (18) are both hollow, and the movable end of the micro electric telescopic rod (17) is fixedly connected to the mounting sleeve (18).

2. A concrete member hardness detection device according to claim 1, characterized in that: An electric push rod (3) for pushing the L-shaped support block (2) to move up and down is fixedly mounted on the upper wall of the base (1); the upper movable end of the electric push rod (3) is fixedly connected to the bottom surface of the L-shaped support block (2); four sleeve holes (5) are symmetrically opened on the upper horizontal end of the L-shaped support block (2); connecting rods (4) are movably sleeved inside the sleeve holes (5); and the lower end of the connecting rod (4) is fixedly connected to the upper wall of the base (1).

3. A concrete member hardness detection device according to claim 1 or 2, characterized in that: The inner wall surface of the mounting sleeve (18) is fixedly connected to a limit block (21), wherein the limit block (21) is an arc-shaped elastic block with a triangular cross-section. The outer wall surface of the rebound hammer (16) is provided with a limit groove (22) at a position corresponding to the limit block (21), and the limit block (21) is movably engaged in the interior of the limit groove (22).

4. A concrete component hardness detection device according to claim 1, characterized in that: A connecting column (7) is connected to the center point of the rear wall of the rotating block (6) via a bearing, and one end of the connecting column (7) away from the rotating block (6) is fixedly connected to the L-shaped support block (2). Eight linkage blocks (11) are equidistantly installed in a circular array on the rear wall of the rotating block (6). A servo motor (8) is fixedly installed on a side wall of the L-shaped support block (2) close to the rotating block (6). A turntable (9) is fixedly connected to the output end of the servo motor (8), and a push block (10) is fixedly connected to the outer wall of the turntable (9). A sensor (23) for detecting the motion state of the rotating block (6) is fixedly installed on the front wall of the vertical end of the L-shaped support block (2) at a position corresponding to the rotating block (6).

5. A concrete member hardness detection device according to claim 4, characterized in that: The servo motor (8) is located below the rotating block (6), and the outer wall surface of the rotating disk (9) is capable of contacting the outer wall surface of an adjacent linkage block (11) on the rotating block (6).

6. A concrete member hardness detection device according to claim 4, characterized in that: The outer wall surface of the rotating block (6) is provided with a slot (12); a support block (13) is fixedly mounted on the upper horizontal end of the L-shaped support block (2) at a position corresponding to the slot (12) on the rotating block (6); an arc-shaped block (14) is fixedly connected to the upper wall surface of the support block (13); the arc-shaped block (14) is an arc-shaped block, and the arc-shaped block (14) is movably engaged with the inside of the slot (12).

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