Disease detection device for tunnel structure

Abstract

A tunnel structure disease detection device provided by the present invention comprises a compartment, a plurality of high-definition cameras, a laser radar and four rotary sweeping rada assemblies, the plurality of high-definition cameras are uniformly arranged on the outer wall of the compartment, the laser radar is arranged on the front surface of the compartment, and the four rotary sweeping rada assemblies are arranged on the outer wall of the compartment. Four mounting through grooves are formed in the outer wall of the compartment in an annular array mode. Through combined use of the carriage, the high-definition camera, the laser radar and the rotary sweeping rada assembly, the laser radar models a tunnel shape, the high-definition camera photographs and records tunnel surface diseases, and the rotary sweeping rada assembly cooperates with the vehicle speed to form intermediate layer geological imaging. The four rotary sweeping rada assemblies are placed according to different positions to scan a tunnel in a surface-to-depth high-density covering mode, array distribution and simultaneous detection are achieved, the high-resolution surface-to-depth three-dimensional imaging technology is achieved, roadbed potential safety hazards are rapidly checked, the influence of detection on railway operation is reduced, and the railway safety operation level is improved.

Description

Technical Field

[0001] The invention relates to the technical field of railway tunnel detection, and in particular to a tunnel structure defect detection device. Background Art

[0002] Tunnels are an important part of railways, and their number is increasing. Tunnel safety inspection and maintenance have become an important task in railway operation and management. It is particularly important to quickly inspect tunnels without stopping operations or closing traffic. Cameras installed in tunnels can monitor the internal conditions of tunnels in real time to detect safety hazards. Ultrasonic detection, infrared thermal imaging detection, laser scanning, etc. can also be used to detect the integrity of tunnel structures, or use robotic arms to carry detection equipment into tunnels for close-range detection, or use special detection vehicles to drive in tunnels to detect tunnel structures, tracks, etc., or use satellite remote sensing, drones and other technologies to monitor the external environment of tunnels.

[0003] Existing detection technologies often take a long time to complete the detection work, which is difficult to meet the requirements of rapid detection of high-speed railway tunnels. Some detection technologies are greatly affected by environmental factors in actual applications. The accuracy and reliability of detection data need to be improved. Some high-end detection equipment is expensive and the maintenance cost is high, which leads to an increase in the overall detection cost. Different tunnel conditions may require different detection equipment and technologies. Existing detection equipment is difficult to adapt to all types of tunnel environments. Testing without closing traffic may bring safety risks to detection personnel and train operation. The amount of data generated by the detection is large, and the speed of data processing and analysis cannot keep up, which affects the timeliness of the detection results. Some detection work still relies on manual operation, and there are problems of waste of human resources and human errors. Therefore, a tunnel structure disease detection device is proposed. Summary of the invention

[0004] In view of this, an embodiment of the present invention hopes to provide a tunnel structure defect detection device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] The technical solution of an embodiment of the present invention is implemented as follows: a tunnel structure defect detection device includes a carriage, a plurality of high-definition cameras, a laser radar and four rotary scanning radar assemblies, wherein the plurality of high-definition cameras are evenly arranged on the outer wall of the carriage, the laser radar is arranged on the front surface of the carriage, the outer wall of the carriage is provided with four mounting grooves in a circular array, and the four rotary scanning radar assemblies are arranged in the corresponding mounting grooves, and the rotary scanning radar assembly includes a mounting bracket, a driving mechanism, a radar base plate and two geological radars, wherein the mounting bracket is arranged on the inner wall corresponding to the mounting groove, and the radar base plate is arranged on the mounting bracket; the driving mechanism is respectively arranged on the mounting bracket and the radar base plate, and the two geological radars are both arranged on the driving mechanism.

[0006] In some embodiments, the driving mechanism includes a motor, a first pulley, a belt ring, a second pulley, a slip ring, a shaft core, a bearing and a shaft head, wherein the motor is arranged on the inner wall of the mounting bracket, and the first pulley is arranged on the output shaft of the motor; the slip ring is arranged on the mounting bracket, and the second pulley is arranged on the outer wall of the shaft core, and the inner wall of the belt ring is connected to the outer wall of the first pulley and the second pulley; the bearing passes through the upper surface of the radar base plate, and the bearing is fixedly connected to the radar base plate; the outer wall of the shaft head is arranged on the inner wall of the bearing, and the shaft core is arranged on the inner wall of the shaft head; the two geological radars are arranged on the upper surface of the shaft head.

[0007] In some embodiments, the shaft head passes through a mounting plate, the shaft head is fixedly connected to the mounting plate, two U-shaped brackets are symmetrically arranged on both sides of the mounting plate, the two U-shaped brackets are fixedly connected to the mounting plate, and the two geological radars are arranged on the inner walls corresponding to the U-shaped brackets.

[0008] In some embodiments, a controller is provided on the inner wall of the mounting bracket, an encoder is provided on the upper surface of the radar base plate, the encoder passes through the radar base plate and is provided on the output shaft of the motor, and the controller is electrically connected to the encoder and the motor through wires, respectively.

[0009] In some embodiments, a radome is disposed on the upper surface of the radar base plate.

[0010] In some embodiments, the upper surface of the radome is evenly provided with through holes.

[0011] In some embodiments, the frequency of one of the geological radar electromagnetic waves is 100 MHz, and the frequency of another geological radar electromagnetic wave is 400 MHz.

[0012] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0013] The present invention uses a combination of a carriage, a high-definition camera, a laser radar and a rotary scanning radar assembly, wherein the laser radar models the shape of the tunnel, the high-definition camera takes photos and videos of the surface defects of the tunnel, the rotary scanning radar assembly forms an intermediate layer geological image in coordination with the vehicle speed, and four rotary scanning radar assemblies are placed in different positions to form a high-density coverage from the surface to the depth to scan the tunnel, and the array distribution detects simultaneously to realize high-resolution three-dimensional imaging technology from the surface to the depth, quickly check for roadbed safety hazards, reduce the impact of detection on railway operations, and improve the level of railway safety operations.

[0014] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural diagram of the present invention;

[0017] Figure 2 It is a top view of the structure of the present invention;

[0018] Figure 3 For the present invention Figure 2 AA side section structure diagram;

[0019] Figure 4 For the present invention Figure 3 A magnified structural diagram of area B;

[0020] Figure 5 For the present invention Figure 3 The enlarged structure diagram of the C region;

[0021] Figure 6 It is a structural diagram of the scanning radar assembly of the present invention.

[0022] Figure numerals: 1. carriage; 2. high-definition camera; 3. laser radar; 4. rotary sweep radar assembly; 5. radar cover; 6. controller; 7. mounting plate; 8. mounting slot; 9. encoder; 10. through hole; 11. U-shaped bracket; 40. mounting bracket; 41. driving mechanism; 42. radar base plate; 43. geological radar; 410. motor; 411. first pulley; 412. belt ring; 413. second pulley; 414. slip ring; 415. shaft core; 416. bearing; 417. shaft head. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] It should be noted that the terms "first", "second", "symmetrical", "array", etc. are only used to distinguish between description and position description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "symmetrical", etc. can explicitly or implicitly include one or more of these features; similarly, when the quantity of certain features is not limited in the form of words such as "two" or "three", it should be noted that this feature also explicitly or implicitly includes one or more feature quantities;

[0025] In the present invention, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "fixation" and the like should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, a direct connection, welding, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the description and drawings combined with specific circumstances.

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-Figure 6As shown, an embodiment of the present invention provides a tunnel structure defect detection device, including a carriage 1, a plurality of high-definition cameras 2, a laser radar 3 and four rotary scanning radar assemblies 4, wherein the plurality of high-definition cameras 2 are evenly arranged on the outer wall of the carriage 1, the laser radar 3 is arranged on the front surface of the carriage 1, and the outer wall of the carriage 1 is provided with four mounting grooves 8 in a circular array, and the four rotary scanning radar assemblies 4 are arranged in the corresponding mounting grooves 8, and the rotary scanning radar assembly 4 includes a mounting bracket 40, a driving mechanism 41, a radar base plate 42 and two geological radars 43, wherein the mounting bracket 40 is arranged on the inner wall of the corresponding mounting groove 8, and the radar base plate 42 is arranged on the mounting bracket 40, the driving mechanism 41 is respectively arranged on the mounting bracket 40 and the radar base plate 42, and the two geological radars 43 are both arranged on the driving mechanism 41.

[0028] In this embodiment, specifically, the driving mechanism 41 includes a motor 410, a first pulley 411, a belt ring 412, a second pulley 413, a slip ring 414, a shaft core 415, a bearing 416 and a shaft head 417, wherein the motor 410 is arranged on the inner wall of the mounting bracket 40, and the first pulley 411 is arranged on the output shaft of the motor 410, the slip ring 414 is arranged on the mounting bracket 40, and the second pulley 413 is arranged on the outer wall of the shaft core 415, the inner wall of the belt ring 412 is connected to the outer wall of the first pulley 411 and the second pulley 413, the bearing 416 passes through the upper surface of the radar bottom plate 42, and The bearing 416 is fixedly connected to the radar base plate 42, the outer wall of the shaft head 417 is arranged on the inner wall of the bearing 416, and the shaft core 415 is arranged on the inner wall of the shaft head 417, and the two geological radars 43 are arranged on the upper surface of the shaft head 417. The output shaft of the motor 410 arranged as above controls the first pulley 411 to rotate, and the first pulley 411 drives the second pulley 413 to rotate through the belt ring 412. The second pulley 413 drives the shaft core 415 to rotate on the slip ring 414, and the shaft core 415 drives the shaft head 417 to rotate on the bearing 416, and the shaft head 417 drives the two geological radars 43 to rotate.

[0029] In this embodiment, specifically, the shaft head 417 passes through the mounting plate 7, the shaft head 417 is fixedly connected to the mounting plate 7, two U-shaped brackets 11 are symmetrically arranged on both sides of the mounting plate 7, the two U-shaped brackets 11 are fixedly connected to the mounting plate 7, and two geological radars 43 are arranged on the inner walls of the corresponding U-shaped brackets 11. By the above arrangement of the shaft head 417, the mounting plate 7 is driven to rotate, the mounting plate 7 drives the two U-shaped brackets 11 to rotate, and the two U-shaped brackets 11 both drive the two geological radars 43 to rotate.

[0030] In this embodiment, specifically, a controller 6 is provided on the inner wall of the mounting bracket 40, an encoder 9 is provided on the upper surface of the radar base plate 42, the encoder 9 penetrates the radar base plate 42 and is provided on the output shaft of the motor 410, the controller 6 is electrically connected to the encoder 9 and the motor 410 through wires, respectively. Through the above settings, the encoder 9 detects the rotation speed of the output shaft of the motor 410, and the encoder 9 transmits the detection data to the controller 6, so that the controller 6 implements the regulation of the motor 410 to rotate at a speed of 100-500 revolutions per minute.

[0031] In this embodiment, specifically, a radome 5 is provided on the upper surface of the radar base plate 42 , and the radome 5 is used to protect the two geological radars 43 .

[0032] In this embodiment, specifically, the upper surface of the radar cover 5 is evenly provided with through holes 10 , which are used to dissipate heat for the two geological radars 43 and facilitate the enhancement of the detection of the two geological radars 43 .

[0033] In this embodiment, specifically, the frequency of the electromagnetic wave of one geological radar 43 is 100 MHz, and the frequency of the electromagnetic wave of another geological radar 43 is 400 MHz.

[0034] When the present invention is working: the carriage 1 is installed at the end of the rail car carriage, four rotary scanning radar assemblies 4 are installed on the carriage 1, the output shaft of the motor 410 controls the first pulley 411 to rotate, the encoder 9 detects the rotation speed of the output shaft of the motor 410, and the encoder 9 transmits the detection data to the controller 6, so that the controller 6 implements the control of the rotation speed of the motor 410, the first pulley 411 drives the second pulley 413 to rotate through the belt ring 412, the second pulley 413 drives the shaft core 415 to rotate on the slip ring 414, the shaft core 415 drives the shaft head 417 to rotate on the bearing 416, the shaft head 417 drives the mounting plate 7 to rotate, the mounting plate 7 drives the two U-shaped brackets 11 to rotate, and the two U-shaped brackets 11 both drive the two geological radars 43 to rotate, thereby driving the two geological radars 43 to scan at a speed of 100-500 revolutions per minute, and combined with the travel speed of the rail car, a spiral scanning of the tunnel invert ground, the left and right surrounding rocks, and the tunnel top is formed.

[0035] One of the geological radars 43 has an electromagnetic wave frequency of 100 MHz and is used to detect a depth of 5-30 meters, and the other geological radar 43 has an electromagnetic wave frequency of 400 MHz and is used to detect a depth of 1-5 meters.

[0036] The 3 pairs of tunnel shapes are used together to model and provide accurate geometric information for 3D imaging data processing.

[0037] The high-definition camera 2 takes photos and videos of tunnel surface defects, providing high-density geological information for subsequent three-dimensional imaging data processing.

[0038] Through the data processing system, the collected radar data, lidar modeling data and high-definition camera data are analyzed to form three-dimensional imaging, realizing high-precision hidden danger inspection of the surrounding rock subgrade of the tunnel structure.

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A tunnel structure defect detection device, comprising a carriage (1), a plurality of high-definition cameras (2), a laser radar (3) and four rotary scanning radar components (4), characterized in that: A plurality of high-definition cameras (2) are evenly arranged on the outer wall of the carriage (1), the laser radar (3) is arranged on the front surface of the carriage (1), the outer wall of the carriage (1) is provided with four installation slots (8) in a circular array, four rotary scanning radar assemblies (4) are arranged in the corresponding installation slots (8), and the rotary scanning radar assembly (4) comprises a mounting bracket (40), a driving mechanism (41), a radar bottom plate (42) and two geological radars (43), wherein: The mounting bracket (40) is arranged on an inner wall corresponding to the mounting through groove (8), and the radar base plate (42) is arranged on the mounting bracket (40); The driving mechanism (41) is respectively arranged on the mounting bracket (40) and the radar base plate (42), and the two geological radars (43) are both arranged on the driving mechanism (41).

2. The tunnel structure defect detection device according to claim 1, characterized in that: The driving mechanism (41) comprises a motor (410), a first pulley (411), a belt ring (412), a second pulley (413), a slip ring (414), a shaft core (415), a bearing (416) and a shaft head (417), wherein: The motor (410) is arranged on the inner wall of the mounting bracket (40), and the first pulley (411) is arranged on the output shaft of the motor (410); The slip ring (414) is arranged on the mounting bracket (40), and the second pulley (413) is arranged on the outer wall of the shaft core (415), and the inner wall of the belt ring (412) is aligned with the outer walls of the first pulley (411) and the second pulley (413); The bearing (416) passes through the upper surface of the radar base plate (42), and the bearing (416) is fixedly connected to the radar base plate (42); The outer wall of the shaft head (417) is arranged on the inner wall of the bearing (416), and the shaft core (415) is arranged on the inner wall of the shaft head (417); The two geological radars (43) are both arranged on the upper surface of the shaft head (417).

3. The tunnel structure defect detection device according to claim 2, characterized in that: The shaft head (417) passes through a mounting plate (7), the shaft head (417) is fixedly connected to the mounting plate (7), two U-shaped brackets (11) are symmetrically arranged on both sides of the mounting plate (7), the two U-shaped brackets (11) are fixedly connected to the mounting plate (7), and the two geological radars (43) are arranged on the inner walls corresponding to the U-shaped brackets (11).

4. The tunnel structure defect detection device according to claim 2, characterized in that: A controller (6) is disposed on the inner wall of the mounting bracket (40), an encoder (9) is disposed on the upper surface of the radar base plate (42), the encoder (9) passes through the radar base plate (42) and is disposed on the output shaft of the motor (410), and the controller (6) is electrically connected to the encoder (9) and the motor (410) respectively through electric wires.

5. The tunnel structure defect detection device according to claim 1, characterized in that: A radar cover (5) is provided on the upper surface of the radar bottom plate (42).

6. The tunnel structure defect detection device according to claim 5, characterized in that: The upper surface of the radome (5) is evenly provided with through holes (10).

7. The tunnel structure defect detection device according to claim 1, characterized in that: The frequency of the electromagnetic wave of one geological radar (43) is 100 MHz, and the frequency of the electromagnetic wave of the other geological radar (43) is 400 MHz.

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