Concrete hardness detection device

Abstract

The utility model discloses a concrete hardness detection device which comprises a base and a rebound apparatus, a sliding moving mechanism and a rotation adjusting mechanism are respectively arranged on two sides of the base, the sliding moving mechanism comprises a sliding table, a fixing assembly is arranged on the sliding table, and the rebound apparatus is arranged on the sliding table through the fixing assembly. The rotation adjusting mechanism comprises a claw clamp, a driving assembly and a limiting assembly, the claw clamp is used for containing a concrete test block, the driving assembly is used for driving the claw clamp to rotate, the limiting assembly comprises a rotating disc and a clamping block, a plurality of clamping grooves are formed in the outer side of the rotating disc at equal intervals, the clamping block is matched with each clamping groove, and the clamping block limits the claw clamp through the clamping grooves. The concrete test block can be placed by utilizing the claw clamp, then the rebound apparatus is placed on the sliding table, the surface hardness of the concrete test block can be measured by pushing the rebound apparatus to be close to the concrete test block, and the position of a test point on the surface of the test block can be adjusted by shaking the handle after single measurement. Therefore, the test requirement of multi-point determination of the concrete test block is met.

Description

Technical Field

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

[0002] Concrete hardness is an indicator of concrete strength. Concrete with higher hardness usually has higher compressive strength, which is beneficial to ensure the safety and durability of engineering structures. The quality of concrete can be evaluated and controlled through hardness testing.

[0003] The rebound hammer is a non-destructive testing instrument used to test the hardness of concrete. The method of using the rebound hammer to test the compressive strength of ordinary concrete structural components is referred to as the rebound method. When using the rebound method to test the hardness of concrete test blocks, in order to reduce errors caused by local factors, multiple test points are usually set on its surface, and each test point is measured multiple times to improve the accuracy and reliability of the results. However, despite this, the accuracy of the test results of this method is also strongly affected by human factors, which is mainly reflected in the angle, stability and uniformity of the worker holding the rebound hammer when applying force to the concrete test block.

[0004] After searching, the Chinese utility model patent with publication number CN217132866U discloses a concrete hardness testing device for concrete, including a support column, a support spring, a support base, a support cross plate, a fixed clamping assembly, an adjustment mounting assembly and a rebound tester body, the support base is symmetrically arranged, the support column is symmetrically arranged, the support column is fixedly mounted on the upper end of the support base, the two ends of the support cross plate slide on the support column respectively, the support spring is wound on the support column, the support spring is located between the bottom of the support cross plate and the upper end of the support base, the fixed clamping assembly is arranged on the support base, the adjustment mounting assembly is arranged below the middle of the support cross plate, and the rebound tester body is arranged on the adjustment mounting assembly. This application achieves the test effect by setting a support assembly that can fix the rebound tester and the concrete test block at the same time, and then drives the rebound tester to move toward the concrete test block. However, after fixing the concrete test block, it is not convenient to further adjust its position, so it is difficult to meet the test requirements of multi-point measurement of the concrete test block. Utility Model Content

[0005] In view of the above-mentioned prior art, the utility model provides a concrete hardness detection device, and the main technical problem to be solved is how to meet the test requirements of multi-point measurement of concrete test blocks.

[0006] To achieve the above purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0007] A concrete hardness testing device comprises a base and a rebound tester. A sliding mechanism and a rotation adjustment mechanism are respectively arranged on both sides of the base. The sliding mechanism comprises a slide table. A fixing assembly is arranged on the slide table. The rebound tester is mounted on the slide table through the fixing assembly. The rotation adjustment mechanism comprises a claw clamp, a driving assembly and a limiting assembly. The claw clamp is used to accommodate a concrete test block. The driving assembly is used to drive the claw clamp to rotate. The limiting assembly comprises a turntable and a clamping block. A plurality of clamping slots are equidistantly arranged on the outer side of the turntable. The clamping block is adapted to each of the clamping slots. The clamping block limits the claw clamp through the clamping slots.

[0008] Furthermore, a fixing box is fixedly connected to one side of the top of the base, and circular through holes are provided at the top of one side and the bottom of the other side of the fixing box, and the fixing box is rotatably connected to a rotating rod and a rotating shaft at two circular through holes respectively through a damping rotating shaft, the claw clamp is fixedly connected to the rotating rod at one end outside the fixing box, and a plurality of protrusions are equidistantly provided on the inner side of the claw clamp, and a handle is fixedly connected to the rotating shaft at one end outside the fixing box.

[0009] Furthermore, the driving assembly includes a driven wheel and a driving wheel, which are respectively connected to the rotating rod and the rotating shaft at one end in the fixed box through keys, the driven wheel is meshed with the driving wheel, and the diameter of the driven wheel is larger than the diameter of the driving wheel.

[0010] Furthermore, the turntable is connected to the outside of the rod body in the fixed box where the rotating shaft is located through a key, and a limiting groove is fixedly connected to the bottom end of the inner wall of one side of the fixed box, a spring sheet is fixedly connected in the limiting groove, a connecting sheet is fixedly connected to one side of the spring sheet, and a clamping block is fixedly connected to one side of the connecting sheet, and the end of the cutting block and the inner wall of the clamping groove on the turntable are both spherical.

[0011] Furthermore, a guide groove is fixedly connected to the other side of the top of the base, and two sliders are slidably connected inside the guide groove. The slide is fixedly connected to the top of the two sliders. The fixing assembly includes two side panels, and the two side panels are respectively fixedly connected to the two sides of the top of the slider near one end of the fixed box, and the two side panels are made of elastic sheets, both side panels are arc-shaped, and a number of ribs are fixedly connected to the inner top of the two side panels.

[0012] Furthermore, a baffle is fixedly connected to the other side of the top of the slide, a pad is fixedly connected to the side of the baffle close to the side plate, and gaskets are fixedly connected to both sides of the top of the slide. The gaskets, pads, ribs and protrusions are all made of rubber.

[0013] Furthermore, the outer side surfaces of the two side plates are fixedly connected with throat clamps at the middle of both sides of the rebound tester.

[0014] The beneficial effects of the utility model are:

[0015] 1. This device can place the concrete test block by using a claw clamp, and then place the rebound hammer on the slide, so that the surface hardness of the concrete test block can be measured by pushing the rebound hammer close to the concrete test block. After a single measurement, the position of the test point on the test block surface can be adjusted by shaking the handle to meet the test requirements of multi-point measurement of the concrete test block; secondly, in the process of adjusting the position of the test point, the turntable can be limited once each time it rotates the same angle through the card block, so as to facilitate the uniform setting of the test points and avoid the local factors of the test block from affecting the test results; in addition, the slide assists the movement of the rebound hammer to ensure that the force direction is perpendicular to the surface of the test block. In this case, it is easier to control the stability and uniformity of the force, so the accuracy of the test results can be further guaranteed.

[0016] 2. After the rebound hammer is set on the slide, the two side plates can clamp the rebound hammer, the baffle can abut the rebound hammer, and the gasket can protect the rebound hammer, so the stability of its installation can be guaranteed. The rebound hammer can be installed in a detachable manner, which can facilitate its maintenance after use, thereby extending its service life;

[0017] 3. By setting hose clamps on both side panels, during the test, the hose clamps can be used to install marking tools such as markers or chalk on both sides of the rebound tester. Therefore, when the rebound tester contacts the concrete test block, the two marking tools can leave two landing points on the surface of the test block, and the test point is located between the two landing points, so as to facilitate the recording of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a concrete hardness detection device in Example 1 of the present application;

[0019] Figure 2 It is a side cross-sectional view of a fixing box of a concrete hardness detection device in Example 1 of the present application;

[0020] Figure 3 This is a three-dimensional diagram of a concrete hardness detection device in Example 2 of the present application.

[0021] Description of Figure Numbers:

[0022] Base 1, guide groove 2, slide 3, side plate 4, rib 401, gasket 5, slider 6, baffle 7, rebound tester 8, protrusion 9, claw clamp 10, fixing box 11, rotating rod 1101, rotating shaft 1102, driven wheel 12, driving wheel 13, turntable 14, block 15, connecting plate 16, spring sheet 17, limiting groove 18, throat hoop 19. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the utility model. The terms used herein in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. In the following description, the expression "some embodiments" is involved, which describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0024] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0025] Example 1

[0026] Refer to the attached Figure 1-2The present application provides a concrete hardness testing device, including a base 1 and a rebound tester 8. The concrete test block of the device can adopt a 15 cm cubic test mold and test block specially used for measuring the compressive strength of concrete. A sliding mechanism and a rotation adjustment mechanism are respectively provided on both sides of the base 1. The sliding mechanism is used for the sliding movement of the rebound tester 8, so that it can contact and squeeze the concrete test block to complete the measurement process. The rotation adjustment mechanism is used for the rotation adjustment of the concrete test block, so that the position of the test points calibrated on the surface of the test block can be adjusted, so that each test point can be aligned with the rebound tester 8 in turn. The sliding mechanism includes a slide 3, and a fixed component is provided on the slide 3. The rebound tester 8 is installed on the slide 3 through the fixed component. The fixed component can fix the rebound tester 8 in a detachable manner, so as to facilitate the maintenance and maintenance of the rebound tester 8 after use. Thereby extending its service life, the rotation adjustment mechanism includes a claw clamp 10, a driving assembly and a limiting assembly. The claw clamp 10 is used to accommodate the concrete test block. The claw clamp 10 is in a four-claw shape, and its four claws correspond to the four sides of the cubic concrete test block respectively. Therefore, the specifications of the claw clamp 10 should be consistent with the 15 cm cubic test mold and the test block. The driving assembly is used to drive the claw clamp 10 to rotate, and then drive the test block to rotate to adjust the position of different test points. The limiting assembly includes a turntable 14 and a clamping block 15. A plurality of clamping slots are equidistantly arranged on the outer side of the turntable 14. The clamping block 15 is adapted to each of the clamping slots. The clamping block 15 limits the claw clamp 10 through the clamping slots. In the process of synchronous rotation of the turntable 14 and the claw clamp 10, the clamping block 15 can limit the turntable 14 at the same angle interval through the clamping slots. Therefore, in the process of the claw clamp 10 driving the test block to rotate, there will be pauses at the same angle intervals; such as Figure 2 : For example, if there are 6 slots outside the turntable 14, each time the turntable 14 rotates 60 degrees, it will be engaged by the block 15. In this case, the claw clamp 10 can be in a relatively stable state. Therefore, it is only necessary to set 6 test points equidistantly in a circular arrangement on one surface of the test block. Through the above 6 engagements, the test block can be measured by the rebound tester 8 in 6 stable states during the rotation adjustment process.

[0027] Preferably, a fixing box 11 is fixedly connected to one side of the top of the base 1, and circular through holes are provided at the top of one side and the bottom of the other side of the fixing box 11, and the fixing box 11 is rotatably connected to a rotating rod 1101 and a rotating shaft 1102 at the two circular through holes through a damping shaft, respectively, and the rotating rod 1101 is located above the rotating shaft 1102, so that the claw clamp 10 can support the test block at a higher position relative to the rebound tester 8, so that the rebound tester 8 will contact the outer side of the test block surface when moving, in this case, the diameter of the circular range where the test point is located can be expanded, and there can be a larger range to set more A number of test points are set to ensure that the test results are accurate and reliable. The claw clamp 10 is fixedly connected to the end of the rotating rod 1101 outside the fixed box 11, and a number of protrusions 9 are equidistantly provided on the inner side of the claw clamp 10. The protrusions 9 made of rubber material are used to replace the claw clamp 10 in contact with the surface of the test block, so that the friction between the two can be increased, thereby ensuring the stability of the test block after installation. Moreover, when the test block is installed in this way, it can be taken out and turned over and reinstalled after the test on one side is completed, and the hardness of the remaining surfaces can be further tested. A handle is fixedly connected to the end of the rotating shaft 1102 outside the fixed box 11. The driving assembly includes a driven wheel 12 and a driving wheel 13, which are respectively connected to a rotating rod 1101 and an end of a rotating shaft 1102 in a fixed box 11 through a key, and the driven wheel 12 is meshed with the driving wheel 13, and the diameter of the driven wheel 12 is larger than the diameter of the driving wheel 13. Using a driving wheel 13 with a smaller diameter to drive a driven wheel 12 with a larger diameter can achieve a labor-saving effect, thereby reducing the power requirement for driving a cubic concrete test block with a certain weight to rotate.

[0028] Preferably, the turntable 14 is connected to the outside of the rod body of the rotating shaft 1102 in the fixed box 11 through a key, and a limiting groove 18 is fixedly connected to the bottom end of the inner wall of one side of the fixed box 11, and a spring sheet 17 is fixedly connected to the limiting groove 18, and a connecting sheet 16 is fixedly connected to one side of the spring sheet 17. The clamping block 15 is fixedly connected to one side of the connecting sheet 16, and the end of the cutting block 15 and the inner wall of the clamping groove on the turntable 14 are both spherical. When the clamping block 15 enters the clamping groove of the turntable 14, the clamping block 15 can limit the rotation of the turntable 14 to a certain extent. The turntable 14 rotates, but in this case, if a greater force is applied, the spherical surface of the end of the block 15 will contact the spherical surface of the slot, and the contact of the two arc-shaped surfaces can squeeze the block 15 to allow the connecting piece 16 to enter the limiting slot 18. At this time, the block 15 will leave the slot, so it can rotate relative to the turntable 14, until the turntable 14 continues to rotate and the block 15 enters the next slot under the elastic force of the spring sheet 17, and the block 15 will limit the turntable 14 again.

[0029] Preferably, a guide groove 2 is fixedly connected to the other side of the top of the base 1, and two sliders 6 are slidably connected inside the guide groove 2. The shape of the slide groove 2 and the slider 6 are both inverted "T" shape. Since the slide 3 is fixedly connected to the top of the two sliders 6, the guide groove 2 and the slider 6 can limit the movement of the slide 3 so that it can only move in a straight line along the guide groove 2. The fixed component includes two side plates 4, and the two side plates 4 are respectively fixedly connected to the two sides of the top of the slider 6 near one end of the fixed box 11, and the two side plates 4 are made of elastic sheets. The two side plates 4 are both arc-shaped. The two side plates 4 are used to clamp the rebound tester 8, so they can cooperate with the baffle 7 to limit it, thereby ensuring its stability installed on the slide 3, and a number of ribs 401 are fixedly connected to the inner top of the two side plates 4. A baffle 7 is fixedly connected to the other side of the top of the slide 3, and a pad is fixedly connected to the side of the baffle 7 close to the side plate 4. Gaskets 5 are fixedly connected to both sides of the top of the slide 3. The materials of the gasket 5, pad, rib 401 and protrusion 9 are all rubber. The gasket 5, pad and rib 401 made of rubber material are all used to pad the rebound tester 8, so its safety after installation can be guaranteed.

[0030] Working principle: When testing the concrete hardness, the test block can be placed in the claw clamp 10, so the claw clamp 10 can fix the test block through the protrusion 9 of the rubber material, and then the rebound hammer 8 is placed on the slide 3 and placed between the two side plates 4, and then the rebound hammer 8 is pushed so that its tail end is against the baffle 7. At this time, the stability of the rebound hammer 8 can be maintained by the clamping of the two side plates 4 and the padding of the gasket 5;

[0031] After the rebound test hammer 8 and the concrete test block are installed, the baffle 7 can be pushed to move toward the test block until the rebound test hammer 8 contacts the surface of the test block and generates test data, and then the baffle 7 is pulled to move the rebound test hammer 8 away from the test block, and then this process can be repeated to achieve multiple measurements of a single test point;

[0032] After the test of a single test point is completed, the handle can be turned to rotate while adjusting the rebound hammer 8 away from the test block. The handle can drive the driving wheel 13 and the turntable 14 to rotate through the rotating shaft 1102. The driving wheel 13 drives the rotating rod 1101 to rotate through the driven wheel 12. The rotating rod 1101 drives the test block to rotate through the claw clamp 10, so as to adjust the next test point on its surface to be aligned with the rebound hammer 8. After that, the baffle 7 can be pushed again to continue testing at the test point.

[0033] In the above-mentioned process of adjusting the rotation of the test block, since the block 15 can adapt to each slot on the outside of the turntable 14 and use it to limit the turntable 14, the equidistant engagement of the block 15 on the turntable 14 during the rotation of the turntable 14 can cause equidistant pauses in the rotation of the test block. Therefore, it is only necessary to set the number of test points on the surface of the test block to be equal to the number of the above-mentioned pauses and to be evenly distributed around the circumference, so that each pause of the turntable 14 can have a test point corresponding to the rebound hammer 8. Therefore, not only can the convenience of the alignment adjustment of the two be guaranteed, but also the stability of the test block when squeezed by the rebound hammer 8 can be guaranteed, thereby ensuring the accuracy and reliability of the test results.

[0034] Example 2

[0035] Refer to the attached Figure 3 , the present application provides a concrete hardness testing device. Compared with Example 1, in order to facilitate the recording of the testing process, the outer sides of the two side plates 4 are fixedly connected with throat clamps 19 at the middle of both sides of the rebound tester 8, and the two throat clamps 19 are respectively located at the middle of both sides of the rebound tester 8, that is, the axes of the rebound tester 8 and the throat clamps 19 have the same vertical height. In this case, the two throat clamps 19 can install two markers or chalks on both sides of the rebound tester 8, and after the rebound tester 8 contacts the test block and completes the test, the two marking tools can leave marks on both sides of the contact point between the rebound tester 8 and the test block, and the midpoint of the line connecting the two marks is the above-mentioned contact point, that is, the test point when the rebound tester 8 is used to detect the hardness of the test block.

[0036] Working principle: After installing the rebound test hammer 8 and the concrete test block, two hose clamps 19 can be used to install marking tools such as markers or chalk on both sides of the rebound test hammer 8. In this case, the contact between the rebound test hammer 8 and the test block can allow the above two marking tools to leave landing marks on both sides of the rebound test hammer 8, and the area between the two landing points is where the test point is located. This can avoid the need to set the test point on the surface of the test block in advance, allowing testing and marking to be carried out simultaneously, so that the detection process can be conveniently recorded.

[0037] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. The protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A concrete hardness testing device, comprising a base (1) and a rebound hammer (8), characterized in that: A sliding mechanism and a rotation adjustment mechanism are respectively provided on both sides of the base (1); the sliding mechanism comprises a slide table (3); a fixing assembly is provided on the slide table (3); the rebound tester (8) is mounted on the slide table (3) via the fixing assembly; the rotation adjustment mechanism comprises a claw clamp (10), a driving assembly and a limiting assembly; the claw clamp (10) is used to accommodate a concrete test block; the driving assembly is used to drive the claw clamp (10) to rotate; the limiting assembly comprises a rotating disk (14) and a clamping block (15); a plurality of clamping slots are equidistantly provided on the outer side of the rotating disk (14); the clamping block (15) is adapted to each of the clamping slots; and the clamping block (15) limits the claw clamp (10) via the clamping slots.

2. A concrete hardness detection device according to claim 1, characterized in that: A fixing box (11) is fixedly connected to one side of the top of the base (1), and circular through holes are provided at the top of one side and the bottom of the other side of the fixing box (11), and the fixing box (11) is rotatably connected to a rotating rod (1101) and a rotating shaft (1102) at two circular through holes via damping rotating shafts, respectively. The claw clamp (10) is fixedly connected to one end of the rotating rod (1101) outside the fixing box (11), and a plurality of protrusions (9) are equidistantly provided on the inner side of the claw clamp (10), and a handle is fixedly connected to one end of the rotating shaft (1102) outside the fixing box (11).

3. A concrete hardness detection device according to claim 2, characterized in that: The driving assembly comprises a driven wheel (12) and a driving wheel (13), wherein the driven wheel (12) and the driving wheel (13) are respectively connected to a rotating rod (1101) and an end of a rotating shaft (1102) located in a fixed box (11) through a key, the driven wheel (12) is meshed with the driving wheel (13), and the diameter of the driven wheel (12) is greater than the diameter of the driving wheel (13).

4. A concrete hardness detection device according to claim 2, characterized in that: The turntable (14) is connected to the outside of the rod body of the rotating shaft (1102) in the fixed box (11) through a key; a limiting groove (18) is fixedly connected to the bottom end of the inner wall of one side of the fixed box (11); a spring sheet (17) is fixedly connected to the limiting groove (18); a connecting sheet (16) is fixedly connected to one side of the spring sheet (17); the clamping block (15) is fixedly connected to one side of the connecting sheet (16); and the end of the clamping block (15) and the inner wall of the clamping groove on the turntable (14) are both spherical.

5. A concrete hardness detection device according to claim 2, characterized in that: A guide groove (2) is fixedly connected to the other side of the top of the base (1), two sliders (6) are slidably connected inside the guide groove (2), the slide (3) is fixedly connected to the tops of the two sliders (6), and the fixing assembly comprises two side plates (4), the two side plates (4) are respectively fixedly connected to the two sides of the top of the slider (6) near one end of the fixing box (11), and the two side plates (4) are made of elastic sheets, the two side plates (4) are arc-shaped, and a plurality of ribs (401) are fixedly connected to the inner tops of the two side plates (4).

6. A concrete hardness detection device according to claim 5, characterized in that: A baffle (7) is fixedly connected to the other side of the top of the slide (3); a pad is fixedly connected to the side of the baffle (7) close to the side plate (4); gaskets (5) are fixedly connected to both sides of the top of the slide (3); and the gaskets (5), pads, ribs (401) and protrusions (9) are all made of rubber.

7. A concrete hardness detection device according to claim 5, characterized in that: The outer side surfaces of the two side plates (4) are respectively fixedly connected with throat hoops (19) at the middle of both sides of the rebound tester (8).

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