Road and bridge crack detection device

Abstract

The utility model belongs to the technical field of bridge crack detection, and particularly relates to a road and bridge crack detection device. The problem that in the prior art, a detection probe easily ignores bridge deck cracks is solved. Comprising a vehicle body, an ultrasonic crack detection device is arranged in the vehicle body, a supporting device is arranged at the tail of the vehicle body, a fixing seat is connected to the bottom of the supporting device, an outer cover is horizontally arranged below the fixing seat, an ultrasonic probe is fixed to the bottom of the outer cover, and an opening is formed in the bottom of the outer cover. The ultrasonic probe is arranged in the outer cover, the supporting device is arranged at the top of the outer cover, the bottom of the ultrasonic probe is close to the bridge floor and moves along with the movement of the vehicle body, the bridge floor is subjected to ultrasonic detection in the moving process, ultrasonic nondestructive detection is achieved while the vehicle body passes through one road of the bridge floor, the scanning speed is high, and the detection missing rate is low; and the detection efficiency is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of bridge crack detection technology, specifically a road and bridge crack detection device. Background Technology

[0002] Bridge crack detection is an important means of assessing the health of bridge structures. With the development of technology, detection methods are also constantly evolving. They are mainly divided into traditional manual inspection, ultrasonic non-destructive testing, and machine vision-based inspection. Among them, ultrasonic non-destructive testing is a commonly used method. Its main principle is to use the phenomenon that ultrasonic waves will produce reflection, refraction and scattering when they encounter cracks in media such as concrete. By receiving and analyzing the reflected signals, information such as the location, depth and width of the cracks can be determined.

[0003] Current bridge deck crack detection devices typically employ a manual method of holding the probe head. The probe head is moved across the bridge while the person walks on it, thus achieving the purpose of crack detection. A patent (CN221501664U, titled "A Crack Detection Device for Roads and Bridges") discloses a method that uses a pop-out component. When a crack is encountered, a spring in the pop-out component extends, causing the probe rod to penetrate the crack, enabling automatic crack detection without requiring manual handling and reducing labor intensity. However, in practical use, the pop-out component method of inserting the probe rod into the crack has limitations. Cracks on bridge decks vary in size, and the probe rod can only detect cracks of a size that match its own. This limited detection method can easily overlook other cracks on the bridge deck, leading to detection errors. Utility Model Content

[0004] To address the problem that existing detection probes often overlook bridge surface cracks, this invention provides a road and bridge crack detection device. It features a horizontally mounted outer casing at the rear of a vehicle, housing an ultrasonic probe within the casing. A support device is positioned on top of the casing. The bottom of the ultrasonic probe is close to the bridge surface and moves with the vehicle, performing ultrasonic detection on the bridge surface during movement. This allows for non-destructive ultrasonic testing as the vehicle passes over the bridge, resulting in fast scanning speed, low false negative rate, and significantly improved detection efficiency.

[0005] To achieve the above objectives, the specific technical solution is as follows:

[0006] A road and bridge crack detection device includes a vehicle body, an ultrasonic crack detection device is installed inside the vehicle body, a support device is installed at the rear of the vehicle body, a fixed base is connected to the bottom of the support device, an outer cover is horizontally installed below the fixed base, an ultrasonic probe is fixed at the bottom of the outer cover, and an opening is provided at the bottom of the outer cover.

[0007] The support device includes a fixing plate fixed to the rear of the vehicle body. A mounting seat is provided on one side of the fixing plate, and a support seat is provided on one side of the mounting seat. A suspension strut is connected to the bottom of the extension end of the support seat, and the telescopic end of the suspension strut is bolted to the fixing seat.

[0008] Furthermore, the top of the outer cover is provided with several air inlets, the bottom of the air inlet plate is provided with air holes corresponding to the air inlets, the top of the air inlet plate is connected to a conveying pipe, and the end of the conveying pipe is connected to a high-pressure blower.

[0009] Furthermore, two guide plates are symmetrically arranged on the inner side of the outer cover, and a gas channel is provided between the outer cover and the guide plates.

[0010] Furthermore, the front and rear ends of the outer cover are symmetrical and are inclined surfaces.

[0011] Furthermore, the delivery pipe is a flexible hose, and the top of the air intake plate has a threaded hole, and the delivery pipe is connected to the air intake plate by threads.

[0012] Furthermore, a servo motor is installed inside the mounting base, and the output shaft of the servo motor passes through the mounting base and is fixedly connected to the support base.

[0013] Furthermore, connecting plates are fixed to both the front and rear surfaces of the fixed base, and steel pipes are connected to the ends of the connecting plates. Wheel frames are fixed to both ends of the steel pipes, and auxiliary wheels are provided at the ends of the wheel frames.

[0014] Compared with the prior art, the beneficial effects of this utility model are at least as follows:

[0015] 1) By installing an outer cover horizontally at the rear of the vehicle body, with an ultrasonic probe inside the cover and a support device on top of the cover, the bottom of the ultrasonic probe is close to the bridge surface and moves with the vehicle body. During the movement, ultrasonic detection is performed on the bridge surface. While the vehicle body passes through one road on the bridge surface, ultrasonic non-destructive testing is achieved. The scanning speed is fast, the missed detection rate is low, and the detection efficiency is effectively improved.

[0016] 2) By setting a guide plate on the inner wall of the outer cover and fixing an air inlet plate on the top of the outer cover, the air inlet plate is connected to an external high-pressure fan. The high-pressure fan provides high-pressure air to the outer cover. The air is discharged from the extension end of the outer cover under the guidance of the guide plate. During the process of the ultrasonic probe scanning the bridge surface, the high-pressure air blows away stones and other impurities on the bridge surface in time, which helps to reduce the influence of stones and other impurities on the ultrasonic probe, thereby ensuring the scanning accuracy of the ultrasonic probe. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an installation diagram of this utility model;

[0019] Figure 3 This is a schematic diagram of the auxiliary wheel device of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the support device of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the delivery pipe, air inlet plate, outer cover and ultrasonic probe of this utility model;

[0022] Figure 6 This is a perspective view of the air intake plate, outer cover, and ultrasonic probe of this utility model;

[0023] The diagram shows: 1. Vehicle body; 2. Ultrasonic crack detection device; 3. High-pressure blower; 4. Delivery pipe; 5. Detection mechanism; 5. Fixing base; 51. Connecting plate; 511. Steel pipe; 512. Wheel frame; 513. Support device; 52. Fixing plate; 521. Mounting base; 522. Servo motor; 523. Support base; 524. Air intake plate; 53. Suspension strut; 54. Outer cover; 55. Guide plate; 551. Gas passage; 552. Air inlet; 553. Ultrasonic probe; 6. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0025] like Figure 1 - Figure 6 As shown, this utility model aims to provide a bridge crack detection device that can more comprehensively detect bridge deck cracks, thereby solving the problem that detection probes in the prior art tend to overlook bridge deck cracks. According to the above description, the air intake plate 53 of this application serves as a carrier, and the outer cover 55 at its bottom, the fixed seat 51 at its top, the auxiliary wheel device on the fixed seat 51, the support device 52 located at the top of the fixed seat 51, and the ultrasonic probe 6 inside the outer cover 55 constitute the detection mechanism 5. The detection device of this application also includes a vehicle body 1.

[0026] In the specific process of use, the detection agency 5 scans the bridge surface with the ultrasonic probe 6 while passing over the bridge surface to obtain detection data. The ultrasonic probe 6 is connected to the ultrasonic crack detection device 2 through a data cable. The data information detected by the ultrasonic probe 6 is transmitted to the ultrasonic crack detection device 2 through the data cable. The user obtains the monitoring results of the bridge through data analysis. The specific analysis method has been explained in detail in the existing technology and will not be elaborated here.

[0027] like Figure 1 - Figure 6 As shown, an ultrasonic crack detection device 2 is installed inside the vehicle body 1. A support device 52 is installed at the rear of the vehicle body 1. A fixed base 51 is connected to the bottom of the support device 52. An outer cover 55 is horizontally installed below the fixed base 51. An ultrasonic probe 6 is fixed to the bottom of the outer cover 55. The bottom of the outer cover 55 has an opening. The ultrasonic probe 6 is a rectangular crossbar structure. The outer cover 55 and the ultrasonic probe 6 are horizontally arranged. When the ultrasonic probe 6 passes over the bridge surface, it can scan a road on the bridge surface in a comprehensive manner, thereby reducing the missed detection rate and improving the quality of bridge surface crack detection.

[0028] The support device 52 includes a fixing plate 521 fixed to the rear of the vehicle body. A mounting seat 522 is provided on one side of the fixing plate 521, and a support seat 524 is provided on one side of the mounting seat 522. A suspension strut 54 is connected to the bottom of the extension end of the support seat 524. The telescopic end of the suspension strut 54 is bolted to the fixing seat 51. The suspension strut 54 is a telescopic rod structure with a spring structure inside (not shown in the figure). When the fixing seat 51 pushes the telescopic end of the suspension strut 54 upward, the telescopic end moves into its outer sleeve, thereby avoiding the problem that the fixing seat 51 directly impacts the support seat 524 during the bumpy process, which would cause the detection device of this application to be subjected to a strong impact. This effectively reduces external impact and improves the overall passability of the detection device on bridge decks or other road surfaces.

[0029] like Figure 1 - Figure 4 As shown, a servo motor 523 is installed inside the mounting base 522. The output shaft of the servo motor 523 passes through the mounting base 522 and is fixedly connected to the support base 524. The servo motor 523 adopts SIMOTICS S-1FT7. When the bridge deck is not being detected or when encountering large road obstacles, by starting the servo motor 523, the output shaft of the servo motor 523 drives the support base 524 to rotate 90 degrees. The support base 524 drives the suspension support rod 54 and the entire detection mechanism 5 to flip, thereby maintaining a certain distance from the bridge deck or road surface to facilitate the passage of large road obstacles.

[0030] like Figure 1 - Figure 6As shown, the front and rear ends of the outer cover 55 are symmetrical and inclined. Several air inlets 553 are opened on the top of the outer cover 55, and air holes corresponding to the air inlets 553 are opened on the bottom of the air inlet plate 53. A conveying pipe 4 is connected to the top of the air inlet plate 53, and a high-pressure blower 3 is connected to the end of the conveying pipe 4. The conveying pipe 4 is a flexible hose, and a threaded hole is opened on the top of the air inlet plate 53. The conveying pipe 4 and the air inlet plate 53 are connected by threads. Two guide plates 551 are symmetrically arranged on the inner side of the outer cover 55, and a gas channel 552 is provided between the outer cover 55 and the guide plates 551. While detecting cracks in the bridge deck, the high-pressure blower 3 is activated. The machine 3 draws in air and continuously inputs high-pressure air into the delivery pipe 4. The high-pressure air enters the air inlet plate 53 through the delivery pipe 4. The air inlet plate 53 guides the high-pressure gas through the air inlet 553 to the gas channel 552, and then discharges it from the port of the gas channel 552. When discharged, the high-pressure gas flows along the inclined inner wall of the outer cover 55, thus being discharged at an angle and blown towards the ground, thereby blowing away the stones on the ground, making the bridge surface relatively clean and preventing impurities from affecting the ultrasonic probe 6 to perform detection and scanning. It should be noted that the high-pressure blower 3 is a Roots blower, model JGSR200, which can meet the dust blowing pressure requirements of this application.

[0031] like Figure 1 - Figure 3 As shown, connecting plates 511 are fixed to both the front and rear surfaces of the fixed base 51. A steel pipe 512 is connected to the end of the connecting plate 511. Wheel frames 513 are fixed to both ends of the steel pipe 512. An auxiliary wheel is provided at the end of the wheel frame 513. The connecting plate 511, steel pipe 512, wheel frame 513, fixed base 51, and auxiliary wheel connected to the end of the connecting plate 511 constitute an auxiliary wheel device. The auxiliary wheel device is used to effectively support the air intake plate 53 and the outer cover 55. When the outer cover 55 moves with the vehicle body, if there is a speed bump or other obstacle on the bridge surface, the auxiliary wheel passes over the obstacle first. When the auxiliary wheel hits the obstacle, the auxiliary wheel device pushes the suspension rod 54, which lifts the suspension rod 54 upward. At the same time, it lifts the outer cover 55 and the ultrasonic probe 6 upward, which helps the ultrasonic probe 6 to safely pass over the obstacle and avoids damage to the ultrasonic probe 6 from collision with the obstacle. This is conducive to the smooth operation of the ultrasonic non-destructive testing equipment.

[0032] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0033] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A road bridge crack detection device comprising a vehicle body, the interior of the vehicle body being provided with an ultrasonic crack detection device, characterized in that: The tail of the vehicle body is provided with a supporting device, the bottom of the supporting device is connected with a fixing seat, the lower side of the fixing seat is horizontally provided with an outer cover, the bottom of the outer cover is fixed with an ultrasonic probe, and the bottom of the outer cover is provided with an opening. The supporting device comprises a fixing plate fixed at the tail of the vehicle body, one side of the fixing plate is provided with a mounting seat, one side of the mounting seat is provided with a supporting seat, the bottom of the extending end of the supporting seat is connected with a suspension support rod, and the telescopic end of the suspension support rod is bolted with the fixing seat.

2. The road bridge crack detection device according to claim 1, characterized in that: The top of the outer cover is provided with an air inlet plate, a plurality of air inlets are formed in the air inlet plate, a plurality of air holes corresponding to the air inlets are formed in the bottom of the air inlet plate, a conveying pipe is connected to the top of the air inlet plate, and the end of the conveying pipe is connected with a high-pressure fan.

3. The road bridge crack detection device according to claim 1, characterized in that: The inner side of the outer cover is symmetrically provided with two guide plates, and a gas passage is arranged between the outer cover and the guide plates.

4. The road bridge crack detection apparatus according to claim 1, characterized by: The front end and the rear end of the outer cover are mutually symmetrical and are inclined surfaces.

5. The road bridge crack detection apparatus according to claim 2, characterized in that: The conveying pipe is a flexible pipe, the top of the air inlet plate is provided with a threaded hole, and the conveying pipe is connected with the air inlet plate through threads.

6. The road bridge crack detection apparatus according to claim 1, characterized by: The inside of the mounting seat is provided with a servo motor, the output shaft of the servo motor penetrates through the mounting seat and is fixedly connected with the supporting seat.

7. The road bridge crack detection apparatus according to claim 1, characterized by: The front and rear surfaces of the fixing seat are fixedly provided with connecting plates, the ends of the connecting plates are connected with steel pipes, the two ends of the steel pipes are fixedly provided with wheel frames, and the ends of the wheel frames are provided with auxiliary wheels.

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