Concrete crack monitoring device

Abstract

The utility model relates to the technical field, in particular to a concrete crack monitoring device which comprises a fixing block, a first measuring plate, a second measuring plate, a third measuring plate and the like. A first measuring plate and a second measuring plate are hinged to the bottom of the fixing block, a third measuring plate is slidably connected between the fixing block and the first measuring plate, the third measuring plate penetrates through the fixing block and the first measuring plate, and through grooves for the third measuring plate to slide are formed in the fixing block and the first measuring plate. According to the utility model, the fixing block, the first measuring plate, the second measuring plate and the third measuring plate are arranged, the sides, far away from each other, of the first measuring plate and the second measuring plate are contacted with the edge of the crack by adjusting the included angle between the first measuring plate and the fixing block and the included angle between the second measuring plate and the fixing block, and the crack is measured by reading the degree of the third measuring plate and multiplying the degree by two. Therefore, the influence of light on the measurement precision is prevented, and the change of the measurement precision caused by different reading understanding of different users is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical field, specifically, relate to a monitoring device for concrete crack. BACKGROUND

[0002] Concrete cracking is a common problem in the construction and use of concrete structures. When the crack develops to a certain extent, it will reduce the performance of concrete and damage the integrity and safety of the structure. Therefore, continuous and long-term monitoring of cracks is crucial to ensure structural safety. Currently, there are two methods for crack detection: one is to measure the crack width by selecting the appropriate plug gauge according to the gap size; the other is to place a contrast card with different width markings on the crack surface to determine the specific width of the crack by comparison.

[0003] Different operators may have inconsistent results due to differences in vision, experience level, and understanding of standards. Even the same operator may give different conclusions in different states. When the crack width is close to the markings on the plug gauge, it becomes difficult to determine which one is closer to the actual width, increasing the possibility of error and reducing the consistency and reliability of the measurement results, especially when high-precision measurement is required, which may lead to incorrect evaluation.

[0004] Secondly, the influence of light conditions is also crucial. Good lighting can clearly show the contrast between the crack and the plug gauge, but under poor lighting conditions such as insufficient or excessive natural light, shadows, etc., the color and markings of the plug gauge may be unclear, increasing the difficulty of reading and leading to misjudgment. For example, backlight makes it difficult to identify the edges of the crack, and strong light reflection obscures the details. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a monitoring device for concrete cracks.

[0006] A monitoring device for concrete cracks, comprising a fixed block, a first measuring plate, a second measuring plate, a third measuring plate, a first handle and a second handle, the fixed block is hingedly connected to the first measuring plate and the second measuring plate at the bottom, the third measuring plate is slidably connected between the fixed block and the first measuring plate, the third measuring plate passes through the fixed block and the first measuring plate, the fixed block and the first measuring plate each have a through slot for the sliding of the third measuring plate, the first handle is connected to the side of the third measuring plate away from the fixed block, and the second handle is connected to the top of the first measuring plate.

[0007] More preferably, it also includes clamping blocks and first connecting springs, at least one clamping block is slidably connected in the third measuring plate, and the first connecting spring is connected between the clamping block and the third measuring plate.

[0008] More preferably, the device further comprises guiding blocks, a first connecting rod, and a bidirectional screw rod, the first connecting rod is slidably connected in the first measuring plate and the second measuring plate, the guiding blocks are installed on the front and back sides of the first connecting rod, the guiding blocks are provided with sliding holes for the first connecting rod to slide, and the bidirectional screw rod is rotatably connected in one of the guiding blocks.

[0009] More preferably, the device further comprises a connecting block, a sliding block, and a connecting screw rod, the connecting block is connected to the bottom of one of the guiding blocks, the connecting screw rod is rotatably connected to the connecting block, and the sliding block is slidably connected to the guiding block and is threadedly connected with the connecting screw rod.

[0010] More preferably, the device further comprises a second connecting rod and a second connecting spring, the second connecting rod is slidably connected in the first connecting rod, the second connecting spring is connected between the second connecting rod and the first connecting rod, the second connecting rod is threadedly connected with the bidirectional screw rod, and the second connecting rod is slidably connected with the sliding hole.

[0011] More preferably, the device further comprises a rubber block, and the rubber block is connected to one side of the guiding block close to the fixed block.

[0012] Compared with the prior art, the device has the following advantages: the device is provided with a fixed block, a first measuring plate, a second measuring plate, and a third measuring plate, the included angle between the first measuring plate, the second measuring plate, and the fixed block is adjusted, the side, away from each other, of the first measuring plate and the second measuring plate is in contact with the edge of the crack, the degree of the third measuring plate is read, the degree is multiplied by two, and the width of the crack is obtained, the influence of light on the measurement accuracy is prevented, and the measurement accuracy change caused by different reading understanding of different users is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic view of the device.

[0014] Figure 2 It is a third measuring plate sectional view of the device.

[0015] Figure 3 It is a fixed block sectional view of the device.

[0016] Figure 4 It is a guiding block sectional view of the device.

[0017] The marks of the components in the drawings are as follows: 1-fixed block, 2-first measuring plate, 3-second measuring plate, 4-third measuring plate, 5-first handle, 6-clamping block, 7-first connecting spring, 8-guiding block, 9-first connecting rod, 10-second connecting rod, 11-bidirectional screw rod, 12-second connecting spring, 13-connecting block, 14-sliding block, 15-connecting screw rod, 16-rubber block, and 17-second handle. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] A monitoring device for concrete cracks, as shown in Figures 1-4 The bottom of the fixed block 1 is hingedly connected with the first measuring plate 2 and the second measuring plate 3, the fixed block 1 and the first measuring plate 2 are slidingly connected with the third measuring plate 4, the third measuring plate 4 penetrates the fixed block 1 and the first measuring plate 2, the fixed block 1 and the first measuring plate 2 are both provided with through grooves for the sliding of the third measuring plate 4, the right side of the third measuring plate 4 is fixedly connected with the first handle 5, the third measuring plate 4 is slidingly connected with two clamping blocks 6, the first connecting spring 7 is fixedly connected between the clamping block 6 and the third measuring plate 4, the first connecting spring 7 is a spiral spring, and the top of the first measuring plate 2 is fixedly connected with the second handle 17.

[0020] As shown in Figures 1-4 The first measuring plate 2 and the second measuring plate 3 are both slidingly connected with the first connecting rod 9, the first connecting rod 9 penetrates the first measuring plate 2 and the second measuring plate 3, the first connecting rod 9 is slidingly connected with the second connecting rod 10, the second connecting rod 10 and the first connecting rod 9 are both connected with the second connecting spring 12, the rear side of the first connecting rod 9 and the front side of the second connecting rod 10 are both slidingly connected with the guide block 8, the guide block 8 is provided with a sliding hole for the sliding of the first connecting rod 9 and the second connecting rod 10, the front side guide block 8 is rotatably connected with the bidirectional screw rod 11, the second connecting rod 10 is threadedly connected with the bidirectional screw rod 11, the second connecting rod 10 is slidingly connected with the sliding hole, the bottom of the front side guide block 8 is fixedly connected with the connecting block 13, the connecting block 13 is rotatably connected with the connecting screw rod 15, the connecting screw rod 15 penetrates the connecting block 13, the front side of the guide block 8 is slidingly connected with the sliding block 14, the sliding block 14 is threadedly connected with the connecting screw rod 15, and the side of the front side guide block 8 close to the fixed block 1 is fixedly connected with the rubber block 16.

[0021] When it is needed to measure the size of the concrete crack, hold the first handle 5, and then place the monitoring device in the crack, so that the third measuring plate 4 slides downward along the through slot, under the elastic force of the first connecting spring 7, the clamping block 6 can extrude the fixed block 1, so as to increase the friction between the third measuring plate 4 and the fixed block 1, prevent the third measuring plate 4 from sliding at will, rotate the bidirectional screw rod 11 so that the two second connecting rods 10 slide away from each other along the sliding hole, at this time, the first measuring plate 2 and the second measuring plate 3 are both rotated away from the fixed block 1, when the side away from each other of the first measuring plate 2 and the second measuring plate 3 is in contact with the edge of the crack, make the third measuring plate 4 slide downward along the through slot, so that the third measuring plate 4 is in contact with the concrete, at this time, the first measuring plate 2 blocks the degree of the third measuring plate 4, through reading the degree of the third measuring plate 4, then multiplying the degree by two, the width of the crack is obtained, prevent the light from affecting the measurement accuracy, and avoid the different reading understanding of different users to cause the change of the measurement accuracy, after the measurement is completed, rotate the connecting screw rod 15 to make the sliding block 14 move close to and extrude the fixed block 1, the rubber block 16 can prevent damage caused by friction between the sliding block 14 and the fixed block 1, the second connecting rod 10 slides close to the first connecting rod 9, the second connecting spring 12 is compressed, at this time, the second connecting rod 10 cannot slide in the guide block 8, so as to fix the first measuring plate 2 and the second measuring plate 3, prevent the first measuring plate 2 and the second measuring plate 3 from rotating due to the accidental touch of the bidirectional screw rod 11, facilitate the recording of the size of the crack after the measurement, through multiple measurements of the concrete crack at different times by using the monitoring device, the size of the concrete crack is monitored, when it is needed to fold the monitoring device, reverse the connecting screw rod 15 to make the sliding block 14 away from the fixed block 1, the second connecting rod 10 slides away from the first connecting rod 9, the second connecting spring 12 is stretched, then reverse the bidirectional screw rod 11 to reset the first measuring plate 2 and the second measuring plate 3, slide the third measuring plate 4 upward to reset, the operation is simple.

[0022] Although the present disclosure has been shown and described with respect to certain exemplary embodiments thereof, it should be understood by the skilled in the art that certain changes and modifications can be made thereto without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be defined by the appended claims and their equivalents.

Claims

1. A concrete crack monitoring device, comprising a fixing block (1), characterized in that, It also includes a first measuring plate (2), a second measuring plate (3), a third measuring plate (4), a first handle (5), and a second handle (17). The bottom of the fixing block (1) is hinged to the first measuring plate (2) and the second measuring plate (3). The third measuring plate (4) is slidably connected between the fixing block (1) and the first measuring plate (2). The third measuring plate (4) passes through the fixing block (1) and the first measuring plate (2). Both the fixing block (1) and the first measuring plate (2) have through slots for the third measuring plate (4) to slide. The side of the third measuring plate (4) away from the fixing block (1) is connected to the first handle (5). The top of the first measuring plate (2) is connected to the second handle (17).

2. The concrete crack monitoring device according to claim 1, characterized in that, It also includes a clamping block (6) and a first connecting spring (7). At least one clamping block (6) is slidably connected inside the third measuring plate (4), and the clamping block (6) and the third measuring plate (4) are both connected by the first connecting spring (7).

3. The concrete crack monitoring device according to claim 2, characterized in that, It also includes a guide block (8), a first connecting rod (9) and a bidirectional screw (11). The first connecting rod (9) is slidably connected to both the first measuring plate (2) and the second measuring plate (3). Guide blocks (8) are installed on both the front and rear sides of the first connecting rod (9). Each guide block (8) has a sliding hole for the first connecting rod (9) to slide. A bidirectional screw (11) is rotatably connected to one side of the guide block (8).

4. A concrete crack monitoring device according to claim 3, characterized in that, It also includes a connecting block (13), a slider (14) and a connecting screw (15). The bottom of the guide block (8) on one side is connected to the connecting block (13), the connecting screw (15) is rotatably connected to the connecting block (13), the slider (14) is slidably connected to the guide block (8), and the slider (14) is threadedly connected to the connecting screw (15).

5. A concrete crack monitoring device according to claim 4, characterized in that, It also includes a second connecting rod (10) and a second connecting spring (12). The second connecting rod (10) is slidably connected inside the first connecting rod (9). The second connecting spring (12) is connected between the second connecting rod (10) and the first connecting rod (9). The second connecting rod (10) is threadedly connected to the bidirectional screw (11). The second connecting rod (10) is slidably connected to the sliding hole.

6. A concrete crack monitoring device according to claim 5, characterized in that, It also includes a rubber block (16), and a guide block (8) on one side is connected to the rubber block (1) on the side close to the fixed block (1).

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