Concrete compressive strength rebound detection device

Abstract

The utility model discloses a concrete compressive strength rebound detection device, which relates to the technical field of concrete detection and comprises a support frame, a detection table is fixedly arranged at the lower end in the support frame, a blanking hole is formed in the detection table, a support plate covers the bottom of the blanking hole, and two symmetrically arranged limiting frames are sleeved on the outer wall of the support plate. The limiting frame is fixedly connected with the bottom of the detection table, a protective cover is arranged above the discharging hole in a covering mode, the protective cover is fixedly connected with the top of the detection table, a moving hole is formed in the upper end of the side of the supporting frame, an adjusting screw rod is rotationally arranged in the moving hole, the rod wall of the adjusting screw rod is sleeved with a moving plate in a threaded mode, and a rebound instrument is arranged on the outer wall of the moving plate. According to the utility model, the height of the rebound apparatus can be conveniently adjusted, the rebound apparatus can be in contact with detection test blocks with various thicknesses, meanwhile, the clamping plates are arranged to stably clamp stones in the detection process, and the stability in the concrete detection process is ensured.

Description

Technical Field

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

[0002] The main purpose of concrete compressive strength testing is to evaluate whether the quality and performance of concrete meet the design requirements and ensure the safety and reliability of concrete structures. The rebound method is a non-destructive testing method. The hardness of the concrete surface is tested by a rebound hammer to obtain the surface hardness value, and then the concrete compressive strength value is calculated based on the carbonization depth and the standard curve.

[0003] After searching, the announcement number CN219573814U discloses a rebound method concrete compressive strength testing device, which cooperates with the second motor, the eccentric cam and the outer extrusion block of the second threaded shaft to push the rebound hammer inside the positioning frame to move downward, so that the rebound hammer can be close to the fragments for testing, and the second threaded shaft and the rebound hammer are restored to their original positions by the rebound force of the spring. The position of the rebound hammer can be adjusted by moving the second threaded shaft left and right and cooperating with the hand-tightening nut, so that the rebound hammer can correspond to different points on the detection surface of the test block.

[0004] However, the downward position of the above-mentioned rebound hammer is fixed. When the heights of the test blocks are different, the rebound hammer cannot stably contact the surface of the test block, resulting in affected detection accuracy. At the same time, the stone cannot be ensured to be stable during detection, which easily reduces the detection stability. Utility Model Content

[0005] In view of the problems existing in the existing concrete compressive strength rebound detection device mentioned above, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a concrete compressive strength rebound detection device, which solves the problem that the downward position of the rebound hammer is fixed, and when the heights of the test blocks are different, the rebound hammer cannot stably contact with the surface of the test block, resulting in affected detection accuracy.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A concrete compressive strength rebound detection device comprises a support frame, a detection platform is fixedly arranged at the lower end of the support frame, a feeding hole is opened in the detection platform, a support plate is arranged at the bottom cover of the feeding hole, two symmetrically arranged limit frames are sleeved on the outer wall of the support plate, the limit frames are fixedly connected to the bottom of the detection platform, a protective cover is arranged above the feeding hole, and the protective cover is fixedly connected to the top of the detection platform;

[0009] A movable hole is provided at the upper end of the side of the support frame, an adjusting screw is rotatably arranged inside the movable hole, a movable plate is threadedly sleeved on the rod wall of the adjusting screw, and a rebound tester is arranged on the outer wall of the movable plate;

[0010] Two symmetrically arranged slide plates are slidably arranged inside the discharge hole, springs are fixedly arranged on the adjacent sides of the two slide plates, and clamping plates are fixedly arranged on the adjacent ends of the two springs.

[0011] Preferably, a strip hole is opened on the rear side of the discharge hole, a guide rod is fixedly penetrated inside the slide board, the guide rod is slidably arranged in the strip hole, the rear ends of the two guide rods are fixedly sleeved with connecting blocks, a fixing plate is fixedly arranged at the lower end of the back side of the support frame, a bidirectional screw rod is rotatably arranged at the lower end of the outer wall of the fixing plate, and the two connecting blocks are threadedly sleeved on the outside of the bidirectional screw rod.

[0012] Preferably, a clamp is sleeved on the outer side of the rebound tester, and the clamp is screwed and fixed to the outer side of the movable plate.

[0013] Preferably, a through slot is provided at the upper end of the side of the support frame, and the lower end of the adjusting screw passes through the through slot and is fixedly provided with a rotating block.

[0014] Furthermore, a cross bar is rotatably provided at the upper end of the outer wall of the fixed plate, and the cross bar and the rod wall of the bidirectional screw are both fixedly sleeved with synchronous wheels, and the outer common transmission sleeve of the two synchronous wheels is provided with a synchronous belt, the rod wall fixed sleeve of the cross bar is provided with a first bevel gear, and the lower end fixed sleeve of the adjusting screw is provided with a second bevel gear, and the first bevel gear is matched with the second bevel gear.

[0015] Preferably, the two limiting frames are both arranged in a U shape.

[0016] Preferably, a pull ring is fixedly provided on the side wall of the support plate.

[0017] Preferably, a rotating hole for matching with the second bevel gear is provided at the inner lower end of the movable hole.

[0018] Preferably, the support frame is an L-shaped support frame.

[0019] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0020] 1. The utility model can conveniently adjust the height of the rebound tester through the support frame, testing platform, movable hole, movable plate, rebound tester, clamp, limit frame, supporting plate, guide rod, slide plate, spring and clamp, and can contact with test blocks of various thicknesses. At the same time, the setting of the clamp can stably clamp the stones in the testing process to ensure the stability of the concrete testing process.

[0021] 2. The utility model, through the fixed plate, bidirectional screw, connecting block, guide rod, cross bar, synchronous wheel, synchronous belt, first bevel gear and second bevel gear and adjusting screw, can drive the two clamping plates to approach each other and stably clamp the test block when the rebound tester moves down and contacts the test block. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a rear view of the utility model;

[0025] Figure 3 For the utility model Figure 1 A magnified schematic diagram of part A;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the limiting frame of the utility model.

[0027] Description of reference numerals:

[0028] 1. Support frame; 2. Test table; 3. Support plate; 4. Limit frame; 5. Protective cover; 6. Adjusting screw; 7. Moving plate; 8. Rebound tester; 9. Slide plate; 10. Spring; 11. Clamp; 12. Guide rod; 13. Connecting block; 14. Fixed plate; 15. Bidirectional screw; 16. Clamp; 17. Rotating block; 18. Cross bar; 19. Synchronous wheel; 20. Synchronous belt; 21. First bevel gear; 22. Second bevel gear; 23. Pull ring. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] The utility model embodiment discloses a concrete compressive strength rebound detection device.

[0031] Example 1

[0032] The utility model provides Figure 1-4A concrete compressive strength rebound detection device shown includes a support frame 1, which is an L-shaped support frame, a detection platform 2 is fixedly arranged at the lower end of the support frame 1, a feeding hole is opened in the detection platform 2, a support plate 3 is provided at the bottom cover of the feeding hole, a pull ring 23 is fixedly arranged on the side wall of the support plate 3, and two symmetrically arranged limit frames 4 are sleeved on the outer wall of the support plate 3, the two limit frames 4 are both U-shaped, the limit frames 4 are fixedly connected to the bottom of the detection platform 2, a protective cover 5 is provided above the feeding hole, and the protective cover 5 is fixedly connected to the top of the detection platform 2;

[0033] A moving hole is provided at the upper end of the side of the support frame 1, an adjusting screw 6 is rotatably provided inside the moving hole, a moving plate 7 is threadedly sleeved on the rod wall of the adjusting screw 6, a through slot is provided at the upper end of the side of the support frame 1, the lower end of the adjusting screw 6 passes through the through slot and is fixedly provided with a rotating block 17, a rebound tester 8 is provided on the outer wall of the moving plate 7, a clamp 16 is sleeved on the outer side of the rebound tester 8, and the clamp 16 is fixedly screwed to the outer side of the moving plate 7;

[0034] Two symmetrically arranged slide plates 9 are slidably disposed inside the feed hole, a spring 10 is fixedly disposed on one side of the two slide plates 9 that are close to each other, and a clamping plate 11 is fixedly disposed on one end of the two springs 10 that are close to each other.

[0035] Before conducting a concrete compressive strength test, the test block is placed in the protective cover 5 and located on the top of the support plate 3. The rotating block 17 is then rotated so that the rotating block 17 drives the adjusting screw 6 to rotate. At this time, the moving plate 7 drives the rebound tester 8 to move downward so that the detection end of the rebound tester 8 can be in stable contact with the top of the test block. During the downward movement of the rebound tester 8, the two slides 9 approach each other so that the clamping plate 11 can stably clamp the test block to ensure stability during the test. After the test is completed, the rebound tester 8 and the test block can be separated, and the clamping plate 11 can be separated from the test block. Subsequently, the pull ring 23 is pulled so that the support plate 3 is supported by the limit frame 4 and away from the feeding hole, so that the test block after the test is completed can fall quickly and subsequent testing work can be carried out quickly, thereby improving the detection efficiency of the device.

[0036] Example 2

[0037] Embodiment 2 is based on Embodiment 1, and in order to drive the bidirectional screw rod 15 to rotate stably, the clamping plate 11 is clamped on the outside of the test block, as shown in FIG. Figure 1-2 As shown, a strip hole is opened on the rear side of the unloading hole, a guide rod 12 is fixedly penetrated inside the slide plate 9, the guide rod 12 is slidably arranged in the strip hole, the rear ends of the two guide rods 12 are fixedly sleeved with connecting blocks 13, a fixing plate 14 is fixedly provided at the lower end of the back side of the support frame 1, a bidirectional screw rod 15 is rotatably provided at the lower end of the outer wall of the fixing plate 14, and the two connecting blocks 13 are threadedly sleeved on the outer side of the bidirectional screw rod 15.

[0038] When the rebound tester 8 moves downward, the reciprocating screw 15 starts to rotate. At this time, the two connecting blocks 13 approach each other and drive the guide rod 12 to move laterally. Through the sliding cooperation between the guide rod 12 and the bar hole, the guide rod 12 can drive the slide plate 9 to move laterally, so that under the elastic force of the spring 10, the two clamps 11 can stably clamp the test block to ensure stability during the detection process.

[0039] Example 3

[0040] Embodiment 3 is based on Embodiment 1-2, in order to stably clamp the test block when the two-way screw rod 15 rotates stably when the rebound tester 8 moves downward, as shown in FIG. Figure 1-3 As shown, a cross bar 18 is rotatably provided at the upper end of the outer wall of the fixed plate 14, and the cross bar 18 and the rod wall of the bidirectional screw 15 are fixedly sleeved with a synchronous wheel 19, and the outer sides of the two synchronous wheels 19 are commonly sleeved with a synchronous belt 20, and the rod wall of the cross bar 18 is fixedly sleeved with a first bevel gear 21, and the lower end of the adjusting screw 6 is fixedly sleeved with a second bevel gear 22, the first bevel gear 21 is matched with the second bevel gear 22, and a rotating hole is opened at the inner lower end of the movable hole to cooperate with the second bevel gear 22.

[0041] When the rebound tester 8 moves downward, the adjusting screw 6 rotates stably. At this time, under the meshing of the first bevel gear 21 and the second bevel gear 22, the first bevel gear 21 drives the cross bar 18 to rotate. At this time, the cross bar 18 and the bidirectional screw 15 rotate synchronously under the transmission of the synchronous wheel 19 and the synchronous belt 20, ensuring that the clamping work of the test block is stable.

[0042] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A concrete compressive strength rebound detection device, comprising a support frame (1), characterized in that: A testing platform (2) is fixedly provided at the lower end of the support frame (1), a material discharge hole is provided in the testing platform (2), a bottom cover of the material discharge hole is provided with a supporting plate (3), an outer wall of the supporting plate (3) is provided with two symmetrically arranged limiting frames (4), the limiting frames (4) are fixedly connected to the bottom of the testing platform (2), a protective cover (5) is provided above the material discharge hole, and the protective cover (5) is fixedly connected to the top of the testing platform (2); A movable hole is provided at the upper end of the side of the support frame (1), an adjusting screw (6) is rotatably provided inside the movable hole, a movable plate (7) is threadedly sleeved on the rod wall of the adjusting screw (6), and a rebound hammer (8) is provided on the outer wall of the movable plate (7); Two symmetrically arranged slide plates (9) are slidably disposed inside the discharge hole, a spring (10) is fixedly disposed on one side of the two slide plates (9) close to each other, and a clamping plate (11) is fixedly disposed on one end of the two springs (10) close to each other.

2. The concrete compressive strength rebound detection device according to claim 1, characterized in that: A strip hole is provided at the rear side of the discharge hole, a guide rod (12) is fixedly inserted into the interior of the slide plate (9), the guide rod (12) is slidably arranged in the strip hole, the rear ends of the two guide rods (12) are fixedly sleeved with a connecting block (13), a fixing plate (14) is fixedly provided at the lower end of the back side of the support frame (1), a bidirectional screw rod (15) is rotatably provided at the lower end of the outer wall of the fixing plate (14), and the two connecting blocks (13) are threadedly sleeved on the outer side of the bidirectional screw rod (15).

3. The concrete compressive strength rebound detection device according to claim 1, characterized in that: The outer side of the rebound tester (8) is provided with a clamp (16), and the clamp (16) is screwed and fixed to the outer side of the movable plate (7).

4. The concrete compressive strength rebound detection device according to claim 1, characterized in that: A through slot is provided at the upper end of the side of the support frame (1), and the lower end of the adjusting screw rod (6) passes through the through slot and is fixed with a rotating block (17).

5. The concrete compressive strength rebound detection device according to claim 2, characterized in that: A cross bar (18) is rotatably provided at the upper end of the outer wall of the fixing plate (14); the cross bar (18) and the rod wall of the bidirectional screw rod (15) are both fixedly sleeved with a synchronous wheel (19); a common transmission sleeve on the outer sides of the two synchronous wheels (19) is provided with a synchronous belt (20); the rod wall of the cross bar (18) is fixedly sleeved with a first bevel gear (21); the lower end of the adjusting screw rod (6) is fixedly sleeved with a second bevel gear (22); the first bevel gear (21) and the second bevel gear (22) are arranged in cooperation with each other.

6. The concrete compressive strength rebound detection device according to claim 1, characterized in that: The two limiting frames (4) are both arranged in a U shape.

7. The concrete compressive strength rebound detection device according to claim 1, characterized in that: A pull ring (23) is fixedly provided on the side wall of the support plate (3).

8. The concrete compressive strength rebound detection device according to claim 1, characterized in that: A rotating hole for matching with the second bevel gear (22) is provided at the inner lower end of the movable hole.

9. The concrete compressive strength rebound detection device according to claim 1, characterized in that: The support frame (1) is an L-shaped support frame.

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