A crack detection device for hydraulic testing

Abstract

This utility model provides a crack detection device for hydraulic engineering inspection, comprising a drone, on which a handheld coordinate measuring machine (CMM) and a host computer detachably connected to the handheld CMM are fixedly mounted. The host computer contains 3D modeling software. The handheld CMM is connected to the host computer via a wireless transmission module. The handheld CMM is connected to the host computer via a USB data cable, and the exported data format of the handheld CMM is .stl file. This utility model provides a crack detection device for hydraulic engineering inspection, which can efficiently and quickly detect cracks in large dams, offering convenience, speed, and high accuracy, greatly improving inspection efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy testing technology, specifically relating to a crack detection device for water conservancy testing. Background Technology

[0002] Hydraulic engineering was once included within the discipline of civil engineering, alongside roads, bridges, and public and civil buildings. Hydraulic engineering has the following characteristics: hydraulic structures are subjected to water, resulting in complex working conditions; construction is difficult; natural conditions such as hydrology, meteorology, topography, and geology vary from place to place, and hydrological and meteorological conditions are unpredictable. Therefore, the design of large-scale hydraulic engineering projects is always unique and difficult to standardize; large-scale hydraulic engineering projects involve large investments and long construction periods, and have a significant impact on society, the economy, and the environment. While they can bring significant benefits, serious errors or failures can cause enormous losses or disasters. Therefore, after the completion of hydraulic engineering projects, it is necessary to regularly inspect the dam body for cracks, requiring the use of crack detection devices. These devices allow for timely detection of cracks in the dam body.

[0003] When inspecting cracks in hydraulic structures such as dams and dikes, it is usually necessary to use equipment such as comprehensive crack detectors and ultrasonic crack detectors to understand the physical parameters of the cracks in detail. This provides the necessary data support for the safety factor assessment of hydraulic structures such as dams. Before crack inspection, a large-scale visual inspection of the hydraulic structures such as dams is required to mark the locations of cracks on the dam. Then, the marked cracks are inspected in detail. In actual inspection, due to the large height of dams and dikes and the large area to be inspected, manual inspection is not only difficult but also inefficient, which is not conducive to the rapid collection of data on hydraulic structures. Utility Model Content

[0004] The purpose of this invention is to provide a crack detection device for water conservancy inspection, which solves the technical problem of how to efficiently and quickly detect cracks in large dams. It is convenient, fast, and highly accurate, greatly improving the detection efficiency.

[0005] A crack detection device for water conservancy inspection includes a drone, on which a handheld coordinate measuring machine is fixedly mounted and a host computer is detachably connected to the handheld coordinate measuring machine. The host computer is equipped with three-dimensional modeling software.

[0006] The handheld coordinate measuring machine is connected to the host computer via a wireless transmission module.

[0007] The handheld coordinate measuring machine is connected to the host computer via a USB data cable, and the exported data format of the handheld coordinate measuring machine is .stl file.

[0008] The handheld coordinate measuring machine is equipped with a memory card, which is detachably connected to the card reader in the host computer.

[0009] The handheld coordinate measuring machine is wirelessly connected to the host computer via Bluetooth.

[0010] The handheld coordinate measuring machine is connected to the host computer via cloud service.

[0011] The drone is equipped with a limiting structure, which is engaged with the handheld coordinate measuring machine and fixed to the support leg of the drone.

[0012] The limiting structure includes a fixed seat fixed on the support leg, a rotating connecting rod with one end hinged to the fixed seat, a through hole at the other end of the rotating connecting rod, a through hole fixedly connected to one end of a pull rope, and the other end of the pull rope connected to the support leg at a diagonal position.

[0013] The 3D modeling software is UG software.

[0014] For details not described in this solution, please refer to the conventional understanding and operation of those skilled in the art. The principle is that as long as the technical problem is solved, it is sufficient, and will not be elaborated further here.

[0015] This utility model achieves the following significant effects:

[0016] (1) Using a handheld coordinate measuring machine, scan the shape of the dam and transfer the shape of the dam to the UG software. By observing the UG software, you can clearly see where there are cracks.

[0017] (2) By utilizing the limiting structure and the action of four rotating linkages, the handheld coordinate measuring machine is connected in a contact manner, and the limiting method is convenient and quick;

[0018] (3) The detection method in this scheme is completely different from the existing detection technology. It combines coordinate measuring technology and 3D printing technology for crack detection in this scheme, which greatly reduces the detection cost, is easy to operate, and is convenient and fast. It has also achieved good technical results in practical applications. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the crack detection device in Embodiment 6 of this utility model. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the working state of the limiting structure in Embodiment 6 of this utility model.

[0021] The attached diagram is labeled as follows: 1. Support leg; 2. Support plate; 3. Fixed seat; 4. Rotating connecting rod; 41. Through hole; 5. Top plate; 6. Clamping space. Detailed Implementation

[0022] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution. Example 1

[0023] See Figure 1 and Figure 2 A crack detection device for water conservancy inspection includes a drone, on which a handheld coordinate measuring machine is fixedly mounted, and a host computer is detachably connected to the handheld coordinate measuring machine. The host computer is equipped with three-dimensional modeling software.

[0024] The handheld coordinate measuring machine connects to the host computer via a wireless transmission module.

[0025] The wireless transmission module includes a wireless transmitting module and a wireless receiving module. The handheld coordinate measuring machine is connected to the wireless transmitting module, and the wireless receiving module is connected to the host computer. The working principles of the wireless transmitting and receiving modules are existing technologies and will not be described in detail here. Example 2

[0026] The handheld coordinate measuring machine connects to the host computer via a USB data cable. The exported data format of the handheld coordinate measuring machine is .stl file.

[0027] The model captured by the handheld coordinate measuring machine is transferred to the UG software on the host computer via a USB data cable. Example 3

[0028] The handheld coordinate measuring machine is equipped with a memory card, which is detachably connected to the card reader in the host computer.

[0029] First, the model captured by the handheld coordinate measuring machine is transferred to the memory card, and then the model on the memory card is transferred to the host computer. Example 4

[0030] The handheld coordinate measuring machine connects wirelessly to the host computer via Bluetooth.

[0031] The model in the handheld coordinate measuring machine can also be transmitted to the host computer via Bluetooth. Example 5

[0032] The handheld coordinate measuring machine connects to the host computer via cloud services.

[0033] First, the model from the handheld coordinate measuring machine is transferred to the cloud service, then the model from the cloud service is downloaded and transferred to the host computer.

[0034] It should be noted that, from Examples 1 to 5, the transmission methods of the model are all existing technologies that are easy for those skilled in the art to operate. However, the innovation of this solution lies in its application in the field of crack detection, which will not be described in detail here. Example 6

[0035] See Figures 1-2 The drone is equipped with a limit structure, which is connected to the limit clamp of the handheld coordinate measuring machine. The limit structure is fixed to the support leg 1 on the drone.

[0036] The limiting structure includes a fixed seat 3 fixed on the support leg 1, a rotating connecting rod 4 with one end hinged to the fixed seat 3, and a through hole 41 at the other end of the rotating connecting rod 4. The through hole 41 is fixedly connected to one end of the pull rope, and the other end of the pull rope is tied to the support leg 1 at the opposite corner.

[0037] A support plate 2 is horizontally fixed at the bottom of the support leg 1 to support the handheld coordinate measuring machine (CMM). The handheld CMM is placed on the support plate 2, and its contact limit is set around its perimeter by rotating connecting rods 4. The middle of the four rotating connecting rods 4 is a clamping space 6, in which the handheld CMM is placed. To simplify the design, the UAV body and the handheld CMM are not shown in detail in the attached drawings. A top plate 5 is provided at the top of the support leg 1 to support and fix the UAV body.

[0038] The 3D modeling software used is UG.

[0039] The specific working process of this utility model is as follows:

[0040] Driven by drones, a handheld coordinate measuring machine was used to convert the physical dam into an .stl file; then, an STL converter was used to directly convert the .stl file into a .step file.

[0041] The .step format file is directly imported into the 3D modeling software. In the 3D modeling software, the mouse is placed over different areas of the .step format file without clicking. The selected area changes in the 3D model, indicating a possible crack. The cracks appearing in the 3D model are then traced back to their corresponding locations in the dam entity for verification. This is the entire crack detection process in this solution.

[0042] It should be noted that in UG software, if the dam has cracks, the mouse will be placed in the corresponding position in the model. Non-connected areas (such as cracks) will also be displayed when the mouse is placed. This is the detection principle.

[0043] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A crack detection device for hydraulic engineering inspection, comprising a drone, characterized in that, The drone is equipped with a handheld coordinate measuring machine and a host computer that is detachably connected to the handheld coordinate measuring machine. The host computer is equipped with 3D modeling software. The handheld coordinate measuring machine is connected to the host computer via a wireless transmission module; Alternatively, the handheld coordinate measuring machine is connected to the host computer via a USB data cable, and the exported data format of the handheld coordinate measuring machine is a .stl file; Alternatively, the handheld coordinate measuring machine may be equipped with a memory card, which is detachably connected to the card reader in the host computer.

2. The crack detection device for water detection according to claim 1, wherein The handheld coordinate measuring machine is wirelessly connected to the host computer via Bluetooth.

3. The crack detection device for water detection according to claim 1, wherein The handheld coordinate measuring machine is connected to the host computer via cloud service.

4. The crack detection device for water detection according to claim 1, wherein The drone is provided with a limiting structure, which is connected to the handheld coordinate measuring machine with a limiting clip, and the limiting structure is fixed on the support leg (1) of the drone.

5. The crack detection device for water detection according to claim 1, wherein The limiting structure includes a fixed seat (3) fixed on the support leg (1) and a rotating connecting rod (4) with one end hinged to the fixed seat (3). The other end of the rotating connecting rod (4) is provided with a through hole (41). The through hole (41) is fixedly connected to one end of the pull rope, and the other end of the pull rope is connected to the support leg (1) at the diagonal position.

6. The crack detection device for water detection according to claim 1, wherein The 3D modeling software is UG software.

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