Concrete crack resistance detection device

Abstract

The utility model relates to the technical field of concrete detection, in particular to a concrete crack resistance detection device which comprises a base, a first working table is slidably arranged on the base, a second working table is slidably arranged on the first working table, and the motion trails of the first working table and the second working table are perpendicular to each other; a clamping assembly used for clamping a test piece is arranged on the second workbench, and a detection mechanism used for detecting the test piece is arranged on the base. The device has the effect of conveniently adjusting the position of the test piece.

Description

Technical Field

[0001] The present application relates to the technical field of concrete testing, and in particular to a device for testing the anti-cracking performance of concrete. Background Art

[0002] In order to ensure that ready-mixed concrete has good working performance after leaving the factory, concrete production companies need to test various indicators of concrete, including crack resistance. Crack resistance is a comprehensive performance, which is related to tensile strength, ultimate tensile deformation capacity, tensile elastic modulus, and thermal properties. Since the tensile strength of concrete is much smaller than the compressive strength and the ultimate tensile deformation is very small, cracks are likely to occur under the influence of external forces, temperature changes, humidity changes, etc. Cracks in concrete and reinforced concrete will affect the integrity of the building.

[0003] The patent with publication number: CN218674485U discloses a concrete crack resistance performance detection device, including a base, a detection chamber is opened inside the base, one side of the detection chamber is fixedly connected to a connecting seat, one side of the connecting seat is provided with a fixing mechanism, one side of the upper surface of the base is fixedly connected to a support rod, the outer surface of the support rod is sleeved with a connecting plate, and the end of the connecting plate away from the support rod is fixedly connected to a mounting block.

[0004] In view of the technical problems in the above patents: the existing test device is troublesome to use and inconvenient to adjust the position of the test piece. In the actual test process, when testing different test points on the same test piece, the adjustment steps are cumbersome. This application proposes another technical solution to the above technical problems. Utility Model Content

[0005] In order to facilitate the adjustment of the position of the test piece, the present application provides a device for detecting the anti-cracking performance of concrete.

[0006] The present application provides a concrete crack resistance testing device that adopts the following technical solution:

[0007] A device for testing the crack resistance of concrete comprises: a base, a first workbench is slidably arranged on the base, a second workbench is slidably arranged on the first workbench, the movement trajectories of the first workbench and the second workbench are perpendicular to each other, a clamping assembly for clamping a specimen is arranged on the second workbench, and a testing mechanism for testing the specimen is arranged on the base.

[0008] By adopting the above technical solution, the concrete specimen is fixed on the second workbench using a clamping assembly, and the various positions of the concrete specimen can be adjusted by adjusting the positions of the first workbench and the second workbench, thereby facilitating the detection of different detection points of the same concrete specimen.

[0009] Optionally, a first slide groove is provided on the base, a first slider slidably connected to the first slide groove is fixedly provided on the first workbench, a second slide groove is provided on the first workbench, and a second slider slidably connected to the second slide groove is fixedly provided on the second workbench.

[0010] By adopting the above technical solution, the first slide groove and the first slider cooperate to guide the first workbench, and the second slide groove and the second slider cooperate to guide the second workbench.

[0011] Optionally, a first ball head plunger is embedded in the first slider, and the inner wall of the first slide groove is evenly distributed with first ball grooves matching the first ball head plunger; and a second ball head plunger is embedded in the second slider, and the inner wall of the second slide groove is evenly distributed with second ball grooves matching the second ball head plunger.

[0012] By adopting the above technical solution, the first ball plunger is clamped on the first ball groove to position the first workbench, making the first workbench more stable when in use. The second ball plunger is clamped in the second ball groove to position the second workbench, making the second workbench more stable when in use.

[0013] Optionally, the clamping assembly includes clamping plates slidably arranged on both sides of the second workbench, an adjusting screw rotatably arranged on the clamping plates, and a handle fixedly arranged on the adjusting screw, and the adjusting screw is threadedly connected to the second workbench.

[0014] By adopting the above technical solution, the adjusting screw can be driven to rotate by rotating the handle, so that the clamping plate is clamped on the concrete specimen, thereby achieving fixation of the concrete specimen.

[0015] Optionally, the detection mechanism includes a bracket fixedly arranged on a base, a sleeve slidably arranged on the bracket, a hammer head slidably arranged in the sleeve, and a fixing assembly for fixing the hammer head; an observation hole is opened on the sleeve along the axial direction, and a scale is set on the sleeve.

[0016] By adopting the above technical solution, the hammer head can be adjusted to different heights of the sleeve through the observation hole and the scale, so as to realize the detection of different forces. The position of the hammer head can be fixed by the fixing component, so that the position of the hammer head will not change when the sleeve is moved. When placing the concrete specimen, the sleeve can be lifted, so as to facilitate the placement of the concrete specimen.

[0017] Optionally, the fixing assembly includes clamping plates hingedly arranged on both sides of the sleeve, a connecting rope fixedly arranged on the hammer head, and an elastic member for pushing the two clamping plates to rotate towards each other; the connecting rope is clamped between the two clamping plates.

[0018] By adopting the above technical solution, the two clamping plates can clamp and fix the connecting rope under the action of the elastic member, thereby fixing the position of the hammer head.

[0019] Optionally, the elastic member is a spring sheet fixedly arranged on the sleeve, and the spring sheet is against the clamping plate.

[0020] By adopting the above technical solution, the spring sheet can exert elastic force on the clamping plate, so that the clamping plate can clamp the connecting rope.

[0021] Optionally, anti-slip grooves are provided on the splint.

[0022] By adopting the above technical solution, the anti-slip pattern can increase the friction force, making the connecting rope more firmly clamped.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Use the clamping assembly to fix the concrete specimen on the second workbench. By adjusting the positions of the first workbench and the second workbench, the various positions of the concrete specimen can be adjusted, thereby facilitating the detection of different detection points of the same concrete specimen.

[0025] 2. The hammer head can be adjusted to different heights of the sleeve through the observation hole and scale to achieve different strength detection. The position of the hammer head can be fixed by the fixing component so that the position of the hammer head will not change when the sleeve is moved. When placing the concrete specimen, the sleeve can be lifted, which facilitates the placement of the concrete specimen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0028] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0029] Figure numerals: 1, base; 11, first slide groove; 111, first ball groove; 21, first workbench; 211, first slider; 2111, first ball plunger; 212, second slide groove; 2121, second ball groove; 22, second workbench; 221, second slider; 2211, second ball plunger; 31, clamping plate; 32, adjusting screw; 33, handle; 41, bracket; 42, sleeve; 421, observation hole; 43, hammer; 51, splint; 52, connecting rope; 53, spring sheet. DETAILED DESCRIPTION

[0030] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.

[0031] The present application embodiment discloses a concrete crack resistance performance detection device. Figure 1 and Figure 2 A concrete crack resistance testing device includes a base 1, a first workbench 21 is slidably provided on the base 1, and a second workbench 22 is slidably provided on the first workbench 21, wherein the moving track of the first workbench 21 and the moving track of the second workbench 22 are perpendicular to each other. A clamping assembly for clamping and fixing a concrete specimen is provided on the second workbench 22, and the concrete specimen is fixed on the second workbench 22. By moving the positions of the first workbench 21 and the second workbench 22 respectively, the movement of the concrete specimen in various directions is realized, so that the position of the concrete specimen can be adjusted conveniently, and different positions of the concrete specimen can be tested conveniently.

[0032] For details, please refer to Figure 2 A first slide groove 11 with closed ends is provided on the base 1, a first slider 211 matching the first slide groove 11 is fixedly provided on the first workbench 21, and the first slider 211 is slidably connected to the first slide groove 11. A second slide groove 212 with closed ends is provided on the first workbench 21, a second slider 221 matching the second slide groove 212 is fixedly provided on the second workbench 22, and the second slider 221 is slidably connected to the second slide groove 212. The first slide groove 11 and the second slide groove 212 are arranged perpendicular to each other, the first slide groove 11 and the second slide groove 212 are both dovetail grooves, and the first slider 211 and the second slider 221 are both trapezoidal blocks.

[0033] For further information, please refer to Figure 2 In order to stabilize the positions of the first workbench 21 and the second workbench 22, a first ball plunger 2111 is fixedly embedded on the first slider 211, and first ball grooves 111 matching the first ball plunger 2111 are evenly distributed on the inner wall of the first chute 11, so that the first ball plunger 2111 can be clamped in the first ball groove 111, which plays a role in limiting the position of the first workbench 21. A second ball plunger 2211 is fixedly embedded on the second slider 221, and second ball grooves 2121 matching the second ball plunger 2211 are evenly distributed on the inner wall of the second chute 212, so that the second ball plunger 2211 can be clamped in the second ball groove 2121, which plays a role in limiting the position of the second workbench 22.

[0034] For details, please refer to Figure 1 and Figure 2The clamping assembly includes a clamping plate 31 slidably arranged on both sides of the second workbench 22, an adjusting screw 32 rotatably arranged on the clamping plate 31, and a handle 33 fixedly arranged at one end of the adjusting screw 32 away from the clamping plate 31. The adjusting screw 32 is threadedly connected to the second workbench 22, and the adjusting screw 32 can be driven to rotate by rotating the handle 33, so as to adjust the distance between the two clamping plates 31. A rubber gasket is fixedly arranged on the clamping plate 31, so that the clamping plate 31 is more stable when clamping the concrete specimen.

[0035] Please refer to Figure 1 and Figure 2 A detection mechanism for detecting concrete specimens is arranged on the base 1. Specifically, the detection mechanism includes a bracket 41 fixedly arranged on the base 1, a sleeve 42 slidably arranged on the bracket 41, a hammer 43 slidably arranged inside the sleeve 42, and a fixing component for fixing the position of the hammer 43. An observation hole 421 is opened on the sleeve 42 along the axial direction. At the same time, a scale is arranged on the sleeve 42 along the observation hole 421, so that the staff can observe the position of the hammer 43 and adjust the height of the hammer 43.

[0036] The height of the hammer head 43 on the sleeve 42 is adjusted according to the scale and fixed with a fixing assembly. When placing the concrete specimen, the sleeve 42 is lifted so that the staff can conveniently place the concrete specimen on the second workbench 22. After the placement is completed and clamped and fixed, the sleeve 42 is placed on the surface of the concrete specimen, and then the hammer head 43 is released and hits the concrete specimen. Among them, the sleeve 42 plays a guiding role, so that the hammer head 43 can be kept vertical during the falling process, so that the hammer head 43 will not be skewed. The inner wall of the sleeve 42 and the outer wall of the hammer head 43 are both smooth surfaces, which can greatly reduce the friction between the hammer head 43 and the sleeve 42, and ensure the smooth fall of the hammer head 43.

[0037] For details, please refer to Figure 3 The fixing assembly includes a clamping plate 51 hinged on both sides of the top of the sleeve 42, a connecting rope 52 fixedly arranged at the top of the hammer head 43, and an elastic member used to push the two clamping plates 51 to rotate in a direction close to each other. Among them, the elastic member is a spring sheet 53, one end of the spring sheet 53 is fixedly arranged on the sleeve 42, and the other end of the spring sheet 53 is against the clamping plate 51, and the spring sheet 53 is always in a compressed state, so that the two clamping plates 51 are pressed together under the action of elastic force, thereby clamping and fixing the connecting rope 52. The end of the connecting rope 52 away from the hammer head 43 is fixedly connected to the sleeve 42, and the length of the connecting rope 52 is greater than the length of the sleeve 42, so that it will not limit the adjustment of the position of the hammer head 43, and it can ensure that when the hammer head 43 falls from the highest point of the sleeve 42, the connecting rope 52 will not hinder the hammer head 43 from falling to the lowest point of the sleeve 42.

[0038] In order to ensure the clamping and fixing effect, anti-slip grooves are provided on the surfaces of the two clamping plates 51 that are close to each other, thereby improving the firmness of the clamping plates 51 on the connecting rope 52.

[0039] The implementation principle of the embodiment of the present application is as follows: pull the connecting rope 52 to adjust the position of the hammer 43, and then use two clamps 51 to clamp and fix the connecting rope 52. Raise the sleeve 42, place the concrete specimen on the second workbench 22, and turn the handle 33 to fix the concrete specimen with the clamping plate 31. Adjust the position of the concrete specimen by moving the first workbench 21 and the second workbench 22. After completion, put down the sleeve 42 so that the sleeve 42 is against the surface of the concrete specimen, loosen the hammer 43 so that the hammer 43 falls on the surface of the concrete specimen, and judge the crack resistance by observing the surface of the concrete specimen.

[0040] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A concrete crack resistance testing device, characterized in that: include: A base (1), wherein a first workbench (21) is slidably disposed on the base (1), a second workbench (22) is slidably disposed on the first workbench (21), the movement trajectories of the first workbench (21) and the second workbench (22) are perpendicular to each other, a clamping assembly for clamping a specimen is disposed on the second workbench (22), and a detection mechanism for detecting the specimen is disposed on the base (1).

2. A concrete crack resistance detection device according to claim 1, characterized in that: The base (1) is provided with a first slide groove (11), the first workbench (21) is fixedly provided with a first sliding block (211) slidably connected to the first slide groove (11), the first workbench (21) is provided with a second slide groove (212), and the second workbench (22) is fixedly provided with a second sliding block (221) slidably connected to the second slide groove (212).

3. A concrete crack resistance detection device according to claim 2, characterized in that: A first ball head plunger (2111) is embedded in the first sliding block (211), and the inner wall of the first sliding groove (11) is evenly distributed with first ball grooves (111) matching the first ball head plunger (2111). A second ball head plunger (2211) is embedded in the second sliding block (221), and the inner wall of the second sliding groove (212) is evenly distributed with second ball grooves (2121) matching the second ball head plunger (2211).

4. A concrete crack resistance detection device according to claim 1, characterized in that: The clamping assembly comprises a clamping plate (31) slidably arranged on both sides of the second workbench (22), an adjusting screw (32) rotatably arranged on the clamping plate (31), and a handle (33) fixedly arranged on the adjusting screw (32); the adjusting screw (32) and the second workbench (22) are threadedly connected.

5. A concrete crack resistance detection device according to claim 1, characterized in that: The detection mechanism comprises a bracket (41) fixedly arranged on a base (1), a sleeve (42) slidably arranged on the bracket (41), a hammer head (43) slidably arranged in the sleeve (42), and a fixing assembly for fixing the hammer head (43); an observation hole (421) is provided on the sleeve (42) along the axial direction, and a scale is provided on the sleeve (42).

6. A concrete crack resistance detection device according to claim 5, characterized in that: The fixing assembly comprises clamping plates (51) hingedly arranged on both sides of the sleeve (42), a connecting rope (52) fixedly arranged on the hammer head (43), and an elastic member used for pushing the two clamping plates (51) to rotate towards each other; the connecting rope (52) is clamped between the two clamping plates (51).

7. A concrete crack resistance detection device according to claim 6, characterized in that: The elastic member is a spring sheet (53) fixedly arranged on the sleeve (42), and the spring sheet (53) abuts against the clamping plate (51).

8. A concrete crack resistance detection device according to claim 6, characterized in that: The clamping plate (51) is provided with anti-slip grooves.

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