Tunnel defect range detection device

Abstract

The utility model discloses a tunnel defect range detection device, which relates to the field of railway tunnel lining detection and comprises a support plate, a fixing seat and a telescopic small arm, universal wheels are arranged at four corners of the bottom of the support plate, and a positioning component is arranged below the support plate. And the positioning assembly comprises a driving motor, a rotating rod, a limiting lead screw, a bevel gear, a square sliding block, a first arc-shaped block, a rotating rod, a second arc-shaped block and a positioning plate, the fixing base is arranged at the center of the upper portion of the supporting plate, and a rotating piece is arranged at the center of the upper portion of the fixing base. According to the tunnel defect range detection device, in the use process of detecting the defect range of a tunnel by adopting the tunnel defect range detection device, the stability of the detection device during follow-up detection is ensured, the shaking condition during follow-up detection is avoided, the safety of the detection process is ensured, meanwhile, defect position marking can be more conveniently carried out, and the detection efficiency is improved. More accurate defect positions are obtained, and the detection efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of railway tunnel lining inspection, specifically a tunnel defect range detection device. Background Technology

[0002] When using ground-penetrating radar (GPR) to inspect the quality of tunnel lining concrete pouring, GPR typically operates along the longitudinal direction of the tunnel. This method only provides a general location for tunnel lining defects, making it difficult to accurately pinpoint the extent of the defects. Currently, the main method for locating tunnel defects is a combination of impact echo and core drilling to find the boundaries of the defects and determine their extent. However, the core drilling method is inefficient and causes significant damage to the tunnel lining. Using non-destructive testing methods can quickly and efficiently determine the extent of tunnel lining defects, providing a basis for subsequent maintenance and reinforcement.

[0003] There are two main existing methods for tunnel defect detection: ground-penetrating radar (GPR) and impact wave detection. GPR has several drawbacks: First, when performing lateral intensified scanning, the limited lateral movement of the detection vehicle within the tunnel results in short data lengths for each scan, making accurate lateral positioning difficult after data processing. Second, during lateral scanning, the limited lateral movement of the detection vehicle within the tunnel causes the operating platform to sway, making it difficult for operators to maintain a stable position on the radar antenna, leading to data distortion and low detection efficiency. Third, the operating platform, being at a height, is prone to swaying, posing a risk of falls for operators. Impact wave detection also has drawbacks: First, it requires three people to work together, resulting in a significant personnel investment. Second, during lateral intensified scanning, the limited lateral movement of the detection vehicle leads to personnel safety risks and low detection efficiency. Both methods are time-consuming, inefficient, pose high operator safety risks, and struggle to accurately locate tunnel defects.

[0004] Therefore, there is an urgent need to improve this shortcoming. This utility model studies and improves the existing structure and its deficiencies, and provides a tunnel defect range detection device. Utility Model Content

[0005] The purpose of this invention is to provide a tunnel defect range detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tunnel defect range detection device, comprising a support plate, a fixed base, and a telescopic arm. The support plate has casters at its four bottom corners, and a positioning assembly is located below the support plate. The positioning assembly includes a drive motor, a rotating rod, a limiting screw, a bevel gear, a square slider, a first arc-shaped block, a rotating rod, a second arc-shaped block, and a positioning plate. The fixed base is located at the upper center of the support plate, and a rotating component is located at the upper center of the fixed base. A rotating large arm is located above the rotating component, and a rotating small arm is located on one side of the end of the rotating large arm. The telescopic small arm is connected to one end of the rotating small arm via a hydraulic rod, and a rotating flange is welded to the end of the telescopic small arm. A clamping component is rotatably connected to the telescopic small arm via the rotating flange.

[0007] Furthermore, the drive motor is located on the front side of the support plate, and the output shaft of the drive motor is fixedly connected to a rotating rod via a coupling. The end of the rotating rod is welded with a limit screw, and there are four limit screws, all of which are rotatably connected inside the support plate.

[0008] Furthermore, a bevel gear is welded to the end of the limiting screw, and the limiting screws are rotatably connected by meshing bevel gears. A square slider is rotatably connected to the outside of the limiting screw, and a first arc-shaped block is fixedly connected to the bottom of the square slider.

[0009] Furthermore, a rotating rod is rotatably connected between the first arc-shaped blocks, and a second arc-shaped block is rotatably connected to the outer side of the bottom end of the rotating rod. A positioning plate is welded to the bottom of the second arc-shaped block, and an anti-slip pad is fixedly adhered to the bottom of the positioning plate.

[0010] Furthermore, the fixed base is fixedly connected to the support plate by bolts, and the rotating part is fixedly connected to the fixed base by bolts.

[0011] Furthermore, the rotating arm and the rotating component are rotatably connected via a rotating flange, and the rotating small arm and the rotating arm are rotatably connected via a rotating flange.

[0012] Furthermore, a nut clamp is provided on the outer side of the clamping member, and a rubber pad is fixedly adhered to the inner side of the nut clamp. A marking device is also provided on the inner side of the nut clamp, and the marking device is in close contact with the rubber pad.

[0013] Furthermore, conduit fixing components are provided on the outer sides of both the rotating upper arm and the rotating lower arm, and the conduit fixing components are welded to the rotating upper arm and the rotating lower arm respectively.

[0014] This utility model provides a tunnel defect range detection device, which has the following beneficial effects:

[0015] 1. This utility model is equipped with a positioning component. During the use of the tunnel defect range detection device to detect the defect range of a tunnel, the rotating rod rotates at an angle, causing the positioning plate to move down, thereby gradually suspending the caster wheel in the air. This ensures the stability of the detection device during subsequent detection, avoids shaking during subsequent detection, ensures the safety of the detection process, and facilitates the use of the tunnel defect range detection device by the staff.

[0016] 2. In the process of using the tunnel defect range detection device to detect the defect range of a tunnel, the rotating component allows the clamping component and the marking device to be placed in the required position. The rotating large arm and rotating small arm can adjust the angle of the clamping device and the marking device, so that the sensor is more tightly attached to the concrete surface and the marking points are more accurate. The clamping component can be used to attach the sound pickup sensor to the concrete surface being tested. The marking device can be used to mark the defect location. Furthermore, the setting of the cable fixing component can fix the cable connecting the sound pickup sensor and the paint tube of the marking device to the robotic arm, avoiding the cable and tube from getting tangled and knotted, which facilitates the use of the tunnel defect range detection device by the staff. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the tunnel defect range detection device of this utility model;

[0018] Figure 2 This utility model relates to a tunnel defect range detection device. Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 3 This is a three-dimensional cross-sectional view of the support plate-positioning component of a tunnel defect range detection device according to the present invention.

[0020] In the diagram: 1. Support plate; 2. Caster wheel; 3. Positioning assembly; 301. Drive motor; 302. Rotating rod; 303. Limiting screw; 304. Bevel gear; 305. Square slider; 306. First arc-shaped block; 307. Rotating rod; 308. Second arc-shaped block; 309. Positioning plate; 4. Fixed base; 5. Rotating component; 6. Rotating upper arm; 7. Rotating lower arm; 8. Telescopic lower arm; 9. Clamping component; 10. Nut clamp; 11. Marking device; 12. Conduit fixing component. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figure 1 and Figure 3As shown, a tunnel defect range detection device includes a support plate 1, a fixed base 4, and a telescopic arm 8. Universal wheels 2 are provided at the four corners of the bottom of the support plate 1, and a positioning assembly 3 is provided below the support plate 1. The positioning assembly 3 includes a drive motor 301, a rotating rod 302, a limiting screw 303, a bevel gear 304, a square slider 305, a first arc-shaped block 306, a rotating rod 307, a second arc-shaped block 308, and a positioning plate 309. The drive motor 301 is located on the front side of the support plate 1, and the output shaft of the drive motor 301 is fixedly connected to the rotating rod 302 via a coupling. A limiting screw 303 is welded to the end of the rotating rod 302. There are four rods 303. All four limiting screws 303 are rotatably connected inside the support plate 1. The ends of the limiting screws 303 are welded with bevel gears 304, and the limiting screws 303 are rotatably connected to each other through the meshing of the bevel gears 304. A square slider 305 is rotatably connected to the outside of the limiting screws 303. A first arc block 306 is fixedly connected to the bottom of the square slider 305. A rotating rod 307 is rotatably connected between the first arc blocks 306. A second arc block 308 is rotatably connected to the outside of the bottom end of the rotating rod 307. A positioning plate 309 is welded to the bottom of the second arc block 308, and an anti-slip pad is fixedly adhered to the bottom of the positioning plate 309.

[0023] like Figure 1 and Figure 2 As shown, the fixed base 4 is located above the center of the support plate 1, and a rotating component 5 is located above the center of the fixed base 4. The fixed base 4 is fixedly connected to the support plate 1 by bolts, and the rotating component 5 is fixedly connected to the fixed base 4 by bolts. A rotating large arm 6 is located above the rotating component 5, and a rotating small arm 7 is located on one side of the end of the rotating large arm 6. The rotating large arm 6 and the rotating component 5 are rotatably connected by a rotating flange, and the rotating small arm 7 is rotatably connected to the rotating large arm 6 by a rotating flange. A telescopic small arm 8 is connected to one end of the rotating small arm 7 by a hydraulic rod, and a rotating flange is welded to the end of the telescopic small arm 8. The telescopic small arm 8 is rotatably connected by the rotating flange. A clamping component 9 is attached to hold the sound pickup sensor and attach it to the concrete surface being tested. A nut clamp 10 is provided on the outside of the clamping component 9, and a rubber pad is fixedly adhered to the inside of the nut clamp 10. A marking device 11 is provided on the inside of the nut clamp 10, and the marking device 11 is in close contact with the rubber pad to mark the defect location. A conduit fixing component 12 is provided on the outside of both the rotating upper arm 6 and the rotating lower arm 7. The conduit fixing component 12 is welded to the rotating upper arm 6 and the rotating lower arm 7 respectively, so that the cable connecting the sound pickup sensor and the paint tube of the marking device 11 can be fixed on the robotic arm to avoid the wire and tube from getting tangled.

[0024] In summary, this tunnel defect range detection device, based on Figures 1-3The structure shown illustrates that, during the use of the tunnel defect range detection device for tunnel defect range detection, the operator first moves the device using the casters 2. The drive motor 301 drives the rotating rod 302 to rotate, causing the limiting screws 303 welded to the end of the rotating rod 302 to rotate accordingly. Under the meshing rotation of the bevel gears 304, the four limiting screws 303 rotate synchronously, causing the square slider 305, rotatably connected to the outer side of the limiting screws 303, to move inside the support plate 1. As the square slider 305 moves, the rotating rod 307, rotatably connected below the square slider 305, rotates at an angle, causing the positioning plate 309, rotatably connected below the rotating rod 307, to move downwards. This gradually suspends the casters 2, ensuring the stability of the detection device during subsequent detection. Workers use bolts to fix the mounting base 4 above the support plate 1. Based on the location of tunnel defects detected longitudinally by ground-penetrating radar, a robotic arm tightly attaches the acoustic sensor used in the impact elastic wave method to the defect location for impact echo detection. The depth and size of the defect are analyzed based on the measured waveform. Based on the defect information, the robotic arm tightly attaches the acoustic sensor to the edge of the data analysis area to collect data. When the analyzed data determines that it is the edge of the defect, a marking point is sprayed on the location using the marking device 11. The robotic arm then attaches the acoustic sensor to the edge of the defect location and marks the location. The marking points at the defect location are connected and marked using the defect marking device 11. After marking, an accurate defect location map is obtained, which facilitates the use of the tunnel defect range detection device by the workers.

[0025] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A tunnel defect range detection device, comprising a support plate (1), a fixed base (4), and a telescopic arm (8), characterized in that, The support plate (1) is provided with casters (2) at the four corners of the bottom, and a positioning component (3) is provided below the support plate (1). The positioning component (3) includes a drive motor (301), a rotating rod (302), a limiting screw (303), a bevel gear (304), a square slider (305), a first arc block (306), a rotating rod (307), a second arc block (308), and a positioning plate (309). The fixed seat (4) is located at the upper center of the support plate (1), and a rotating component (5) is located at the upper center of the fixed seat (4). A rotating arm (6) is located above the rotating component (5), and a rotating small arm (7) is located on one side of the end of the rotating arm (6). The telescopic small arm (8) is connected to one end of the rotating small arm (7) by a hydraulic rod, and a rotating flange is welded to the end of the telescopic small arm (8). A clamping component (9) is rotatably connected to the telescopic small arm (8) through the rotating flange.

2. The tunnel defect range detection device according to claim 1, characterized in that, The drive motor (301) is located on the front side of the support plate (1), and the output shaft of the drive motor (301) is fixedly connected to the rotating rod (302) through a coupling. The end of the rotating rod (302) is welded with a limiting screw (303), and there are four limiting screws (303). All four limiting screws (303) are rotatably connected inside the support plate (1).

3. The tunnel defect range detection device according to claim 1, characterized in that, The end of the limiting screw (303) is welded with a bevel gear (304), and the limiting screws (303) are connected to each other by meshing and rotating through the bevel gear (304). A square slider (305) is rotatably connected to the outside of the limiting screw (303), and a first arc block (306) is fixedly connected to the bottom of the square slider (305).

4. The tunnel defect range detection device according to claim 1, characterized in that, A rotating rod (307) is rotatably connected between the first arc-shaped blocks (306), and a second arc-shaped block (308) is rotatably connected to the outer side of the bottom end of the rotating rod (307). A positioning plate (309) is welded to the bottom of the second arc-shaped block (308), and an anti-slip pad is fixedly attached to the bottom of the positioning plate (309).

5. The tunnel defect range detection device according to claim 1, characterized in that, The fixed base (4) is fixedly connected to the support plate (1) by bolts, and the rotating part (5) is fixedly connected to the fixed base (4) by bolts.

6. The tunnel defect range detection device according to claim 1, characterized in that, The rotating arm (6) and the rotating component (5) are rotatably connected by a rotating flange, and the rotating arm (7) and the rotating arm (6) are rotatably connected by a rotating flange.

7. The tunnel defect range detection device according to claim 1, characterized in that, The clamping member (9) is provided with a nut clamp (10) on the outside, and a rubber pad is fixedly attached to the inside of the nut clamp (10). A marking device (11) is provided on the inside of the nut clamp (10), and the marking device (11) is in close contact with the rubber pad.

8. The tunnel defect range detection device according to claim 1, characterized in that, Both the outer sides of the rotating upper arm (6) and the rotating lower arm (7) are provided with conduit fixing parts (12), and the conduit fixing parts (12) are welded to the rotating upper arm (6) and the rotating lower arm (7) respectively.

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