Road and bridge asphalt pavement crack detection device

Abstract

The invention belongs to the technical field of road crack detection, and provides a road and bridge asphalt pavement crack detection device which comprises a hollow mounting frame, a bearing bottom plate is arranged at the bottom of the mounting frame, protective sleeves are symmetrically arranged on the bearing bottom plate, cameras externally connected with a power supply are arranged in the protective sleeves, and the cameras are connected with the power supply. A regulation and control air cylinder is arranged above the bearing bottom plate, an air cylinder rod of the regulation and control air cylinder is connected with the camera, a display screen is arranged on the outer wall of the side, close to the human body, of the mounting frame, and the display screen is electrically connected with the camera; the device further comprises adjusting plates, the adjusting plates are symmetrically installed on the two sides of the bearing bottom plate, a linkage adjusting assembly is arranged at the top of the bearing bottom plate, and the linkage adjusting assembly drives the adjusting plates to achieve angle change. Compared with a manual detection mode, the detection device provided by the invention has the advantages that the condition of omission of small cracks is reduced, and the detection efficiency is also improved at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of road crack detection, in particular to a device for detecting cracks in asphalt pavement of a road bridge. Background Art

[0002] Asphalt pavement refers to various types of pavement paved with road asphalt materials mixed into mineral materials. Asphalt pavement consists of a base layer and a surface layer. The surface layer is a structural layer that directly bears the repeated effects of wheel loads and the influence of natural factors. It can be composed of 1 to 3 layers. The base layer is set under the surface layer, and together with the surface layer, it transmits the repeated effects of wheel loads to the base layer, cushion layer, and soil base, playing a major load-bearing role.

[0003] Asphalt-paved roads or bridges will develop cracks after being used for a period of time due to temperature or construction factors. Cracks will cause uneven force on the road surface and stress concentration on the road surface, which will reduce the road surface's load capacity, accelerate road aging, and may even cause local structural damage to the road surface. In addition, cracks will destroy the road surface's drainage system, making it easy for rainwater and other moisture to penetrate into the road surface structure, which may cause the base layer to soften and further aggravate road surface damage.

[0004] Therefore, manual inspection is a basic method for asphalt pavement crack detection. Inspectors will carefully observe the cracks along the road surface, classify and record the cracks. However, manual inspection mainly relies on naked eye observation. For large-area road inspection, visual fatigue will increase with time, which may lead to low detection accuracy, easy to miss some small cracks and low manual inspection efficiency. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a road bridge asphalt pavement crack detection device to solve the problems of manual omissions and low efficiency in the prior art when detecting cracks on asphalt roads or bridges.

[0006] A road bridge asphalt pavement crack detection device comprises an internally hollow mounting frame, a bearing base plate is provided at the bottom of the mounting frame, a protective cover is symmetrically provided on the bearing base plate, a camera with an external power supply is provided in the protective cover, a regulating cylinder is provided above the bearing base plate, a cylinder rod of the regulating cylinder is connected to the camera, a display screen is provided on the outer wall of the mounting frame on the side close to the human body, and the display screen is electrically connected to the camera;

[0007] It also includes an adjustment plate, which is symmetrically installed on both sides of the bearing base plate. A linkage adjustment component is provided on the top of the bearing base plate, and the linkage adjustment component drives the adjustment plate to achieve angle change.

[0008] Preferably, the mounting frame is fixedly connected to the supporting base plate, a push wheel is provided at the bottom of the supporting base plate near the four corners, and a push armrest is provided at the top of the supporting base plate and at a side of the mounting frame close to the display screen.

[0009] Preferably, a fixedly connected partition is provided inside the mounting frame, a fan with an external power supply is provided on the top of the partition, an air delivery duct is connected at the air outlet of the fan and extends downward through the mounting frame on both sides, the other end of the air delivery duct is connected to air outlets distributed at intervals, and the air outlets are connected to the adjustment plate.

[0010] Preferably, a mounting frame is symmetrically provided on the top of the supporting base plate, the regulating cylinder is fixedly connected to the top of the mounting frame and the cylinder rod passes downward through the mounting frame, and a mounting ring group is symmetrically provided on the bottom of the supporting base plate, the number of the mounting ring group is two, and a rotating rod rotatably connected is provided between the mounting ring groups.

[0011] Preferably, a fixedly connected protective plate is provided in the middle of the rotating rod, and the cross-sectional profile of the protective plate is circular. When the protective plate is rotated toward the protective cover to a horizontal position, the bottom of the protective cover is closed. A leaf spring is symmetrically provided on the rotating rod, and one end of the leaf spring abuts against the mounting ring group, and the other end abuts against the protective plate.

[0012] Preferably, a receiving hole is provided at a corresponding position of the top of the adjusting plate and the mounting frame, and positioning shafts are provided inside the two sides of the supporting base plate, and the two adjusting plates are rotatably connected to the positioning shafts.

[0013] Preferably, the linkage adjustment assembly includes a cooperative rack, a cooperative gear, a linkage gear tooth, a driving gear and a motor. The cooperative gear is located in the accommodating hole and is fixedly connected to the adjustment plate. The cooperative rack is symmetrically distributed above the top of the supporting base plate. The cooperative rack cooperates with the cooperative gear, and the two cooperative racks have a smooth portion at one end away from the cooperative gear.

[0014] Preferably, the linkage gear teeth are installed on the smooth portion and are distributed at intervals, the linkage gear teeth are perpendicular to the gear teeth on the cooperative rack, the driving gear is installed between the two smooth portions and cooperates with the linkage gear teeth, a vertical operating shaft is provided on the driving gear, a positioning plate connected to the bearing base plate is provided above the driving gear, the external power supply of the motor is installed on the top of the positioning plate, and the output shaft of the motor is connected to the operating shaft.

[0015] Preferably, columns are symmetrically arranged at intervals on the top of the supporting base plate, a groove is arranged on one side of the column close to the smooth portion, the smooth portion is located in the groove, and limiting balls are arranged at the top and bottom of the groove, the limiting balls are rotatably embedded in the columns, and the outer wall of the limiting balls is movably fitted with the smooth portion.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention sets a bearing base plate, and a protective cover is symmetrically arranged on the bearing base plate. The camera is installed in the protective cover. The camera is electrically connected to the display screen on the mounting frame. When the camera is shooting the ground, the ground can be viewed through the display screen. For large-area road surface detection, the camera shooting method improves the detection efficiency compared with manual detection.

[0018] At the same time, the height of the camera can be adjusted by a cylinder installed on the supporting base plate. On the one hand, the height of the camera can be adjusted to detect small cracks, and after the detection is completed, the camera can be hidden in a protective cover to prevent the device from being damaged by gravel on the road during movement.

[0019] 2. The present invention provides rotatably connected adjustment plates on both sides of the bearing plate, and the angle of the adjustment plates can be adjusted through a linkage adjustment component. Therefore, when the light intensity is high, the angle of the adjustment rod can be controlled to reduce the amount of sunlight entering under the bearing bottom plate, reduce the occurrence of camera reflections, improve the accuracy of road crack detection, and further reduce missed detections.

[0020] 3. The present invention installs a fan on the top of the partition, and the fan can deliver wind to the delivery duct, so that the wind enters each wind outlet through the delivery duct. The wind outlet is installed on the adjustment plate. After the wind comes out of the wind outlet, it can blow away the dust or small gravel on the road surface or bridge surface viewed below the camera, so as to facilitate the camera to detect;

[0021] Moreover, the air outlet is installed on the adjustment plate, which can control the light intensity while blowing away impurities on the road surface. The set linkage adjustment component can control the angle of the adjustment plate and the air outlet angle of the air outlet at the same time, thereby improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the components of the overall pavement crack detection device of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the components of the bottom viewing angle of the overall pavement crack detection device of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the bearing base plate and the regulating cylinder and other components of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the protective cover and protective plate of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the adjustment plate and the linkage adjustment assembly components of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the coordinated rack, column and other components of the present invention.

[0028] In the figure:

[0029] 1. Mounting frame; 2. Load-bearing base plate; 3. Protective cover; 4. Camera; 5. Control cylinder; 6. Display screen; 7. Adjustment plate; 8. Push wheel; 9. Push armrest; 10. Partition; 11. Fan; 12. Conveying air duct; 13. Air outlet; 14. Mounting frame; 15. Mounting ring set; 16. Rotating rod; 17. Protective plate; 18. Leaf spring; 19. Accommodating hole; 20. Positioning shaft; 21. Cooperative rack; 22. Cooperative gear; 23. Linkage gear; 24. Driving gear; 25. Motor; 26. Smooth part; 27. Operating shaft; 28. Positioning plate; 29. ​​Column; 30. Groove; 31. Limiting ball. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0031] As attached Figure 1 To Attachment Figure 6 As shown:

[0032] Embodiment 1: The present invention provides a device for detecting cracks in asphalt pavement of a road bridge, comprising an internally hollow mounting frame 1, a bearing base plate 2 is provided at the bottom of the mounting frame 1, a protective cover 3 is symmetrically provided on the bearing base plate 2, a camera 4 with an external power supply is provided in the protective cover 3, a regulating cylinder 5 is provided above the bearing base plate 2, a cylinder rod of the regulating cylinder 5 is connected to the camera 4, a display screen 6 is provided on the outer wall of the mounting frame 1 close to the human body, and the display screen 6 is electrically connected to the camera 4;

[0033] It also includes an adjustment plate 7, which is symmetrically installed on both sides of the bearing base plate 2. A linkage adjustment component is provided on the top of the bearing base plate 2, and the linkage adjustment component drives the adjustment plate 7 to achieve angle change.

[0034] It should be noted that, through the support base plate 2, a protective cover 3 is symmetrically installed on the support base plate 2, a camera 4 is installed in the protective cover 3, and the camera 4 is electrically connected to the display screen 6 on the mounting frame 1. When the camera 4 is shooting the ground, it can be viewed through the display. For large-area road surface detection, the camera 4 shooting method improves the detection efficiency compared with manual detection;

[0035] At the same time, the height of the camera 4 can be adjusted by the cylinder installed on the bearing base plate 2. On the one hand, the height of the camera 4 can be adjusted so as to detect small cracks. After the detection is completed, the camera 4 can be hidden in the protective cover 3 to prevent the device from being damaged by gravel on the road during movement.

[0036] By arranging rotatably connected adjustment plates 7 on both sides of the bearing plate, the angle of the adjustment plate 7 can be adjusted through a linkage adjustment component. Therefore, when the light intensity is high, by controlling the angle of the adjustment rod, the sunlight entering under the bearing base plate 2 can be reduced, the reflection of the camera 4 can be reduced, the detection accuracy of road cracks can be improved, and the missed detection can be further reduced.

[0037] In this embodiment, the mounting frame 1 is fixedly connected to the supporting base plate 2, and driving wheels 8 are provided at the bottom of the supporting base plate 2 near the four corners, and a driving armrest 9 is provided at the top of the supporting base plate 2 and on the side of the mounting frame 1 close to the display screen 6.

[0038] It should be noted that, by providing the pushing handrail 9, the staff can conveniently control the moving direction of the detection device. Driven by the pushing wheel 8, the detection device can be moved on the road surface or bridge deck to detect cracks.

[0039] In this embodiment, a fixedly connected partition 10 is provided inside the mounting frame 1, and a fan 11 with an external power supply is provided on the top of the partition 10. The air outlet of the fan 11 is connected to a delivery air duct 12 that extends downward through the mounting frame 1 on both sides. The other end of the delivery air duct 12 is connected to air outlets 13 that are distributed at intervals, and the air outlets 13 are connected to the adjustment plate 7.

[0040] It should be noted that the fan 11 is installed on the top of the partition 10. The fan 11 can deliver wind to the delivery air duct 12, and then enter each wind outlet 13 through the delivery air duct 12. The wind outlet 13 is installed on the adjustment plate 7. After the wind comes out of the wind outlet 13, it can blow away the dust or small gravel on the road surface or bridge surface viewed below the camera 4, so as to facilitate the camera 4 to detect;

[0041] Moreover, the air outlet 13 is installed on the adjustment plate 7, which can control the light intensity while blowing away impurities on the road surface. The arranged linkage adjustment component can control the angle of the adjustment plate 7 and the air outlet angle of the air outlet 13 at the same time, thereby improving the flexibility of the device.

[0042] In this embodiment, a mounting frame 14 is symmetrically provided on the top of the supporting base plate 2, the regulating cylinder 5 is fixedly connected to the top of the mounting frame 14 and the cylinder rod passes downward through the mounting frame 14, and a mounting ring group 15 is symmetrically provided on the bottom of the supporting base plate 2. The number of each mounting ring group 15 is two, and a rotating rod 16 that is rotatably connected is provided between the mounting ring groups 15.

[0043] In this embodiment, a fixedly connected protective plate 17 is provided in the middle of the rotating rod 16. The cross-sectional profile of the protective plate 17 is circular and is made of transparent glass. When the protective plate 17 is rotated toward the protective cover 3 to be horizontal, the bottom of the protective cover 3 is closed. A leaf spring 18 is symmetrically sleeved on the rotating rod 16. One end of the leaf spring 18 abuts against the mounting ring group 15, and the other end abuts against the protective plate 17.

[0044] It should be noted that, through the protection plate 17, the protection plate 17 is fixedly connected to the rotating rod 16 and then rotatably connected between the mounting ring group 15, and a leaf spring 18 is provided on the rotation. In the initial state, under the rotation force of the leaf spring 18, the protection plate 17 will rotate toward the protective cover 3 to close it, so that when the wind outlet 13 is blowing away impurities on the road, the camera 4 is hidden in the protective cover 3, and the bottom of the camera 4 is closed by the protection plate 17, so that impurities are prevented from entering the protective cover 3 and damaging the camera 4, thereby protecting it;

[0045] Moreover, after the camera 4 is driven to descend by regulating the air cylinder 5, the camera 4 comes into contact with the protective plate 17, and the protective plate 17 can also be driven to rotate and open, thereby extending the camera 4 from the protective cover 3. The protective plate 17 is designed to be made of a transparent material, so that when the shooting components inside the camera 4 are rotating, the protective plate 17 will not affect its shooting.

[0046] In this embodiment, a receiving hole 19 is provided at the top of the adjustment plate 7 and at a corresponding position of the mounting frame 1 , and positioning shafts 20 are provided inside both sides of the supporting base plate 2 , and the two adjustment plates 7 are rotatably connected to the positioning shafts 20 .

[0047] It should be noted that, by providing the receiving hole 19 , the cooperative rack 21 and the cooperative gear 22 will not be affected when they cooperate with each other, thereby ensuring that the adjustment plate 7 can achieve normal rotation around the positioning shaft 20 .

[0048] In this embodiment, the linkage adjustment component includes a cooperative rack 21, a cooperative gear 22, a linkage gear 23, a driving gear 24 and a motor 25. The cooperative gear 22 is located in the accommodating hole 19 and is fixedly connected to the adjustment plate 7. The cooperative rack 21 is symmetrically distributed above the top of the supporting base plate 2. The cooperative rack 21 and the cooperative gear 22 cooperate with each other, and the two cooperative racks 21 have a smooth portion 26 at one end away from the cooperative gear 22.

[0049] It should be noted that, through the cooperation between the cooperative gear 22 and the cooperative rack 21, the cooperative rack 21 can drive the cooperative gear 22 to rotate during the movement, thereby driving the adjustment plate 7 to change the angle. The smooth portion 26 is fixedly connected to the cooperative rack 21, and the smooth portion 26 cooperates with the limiting ball 31 to support the cooperative rack 21, thereby ensuring that the cooperative rack 21 can move back and forth.

[0050] In this embodiment, the linkage gear teeth 23 are installed on the smooth portion 26 and are distributed at intervals. The linkage gear teeth 23 are perpendicular to the gear teeth on the cooperative rack 21. The driving gear 24 is installed between the two smooth portions 26 and cooperates with the linkage gear teeth 23. A vertical operating shaft 27 is provided on the driving gear 24. A positioning plate 28 connected to the bearing base plate 2 is provided above the driving gear 24. The external power supply of the motor 25 is installed on the top of the positioning plate 28, and the output shaft of the motor 25 is connected to the operating shaft 27.

[0051] In this embodiment, the top of the supporting base plate 2 is symmetrically provided with spaced columns 29, and a groove 30 is provided on the side of the column 29 close to the smooth portion 26. The smooth portion 26 is located in the groove 30, and a limiting ball 31 is provided at the top and bottom of the groove 30. The limiting ball 31 is rotatably embedded in the column 29, and the outer wall of the limiting ball 31 is movably fitted with the smooth portion 26.

[0052] It should be noted that the smooth portion 26 is arranged in a groove 30 in the column 29, and a limiting ball 31 is symmetrically arranged in the groove 30. The limiting ball 31 is rotatably embedded in the groove 30, and the limiting ball 31 is movably fitted with the smooth portion 26. The limiting ball 31 can keep the smooth portion 26 at a fixed height during movement, and will not hinder the movement of the sliding portion, thereby ensuring the coordinated back and forth movement of the rack 21.

[0053] The method of using the above embodiment is that when crack detection is required for the road surface of a road bridge, the staff pushes the device onto the road surface. In the initial state, the camera 4 is hidden inside the protective cover 3, and the protective plate 17 seals the bottom of the protective cover 3. When dust exists on the road surface, the fan 11 is started, and the fan 11 sends wind into the conveying air duct 12, passes through the conveying air duct 12 and enters the air outlet 13. The air outlet 13 blows away the dust or other impurities on the road surface;

[0054] Start the regulating cylinder 5, and the cylinder rod on the regulating cylinder 5 makes the camera 4 descend in the protective cover 3. After the camera 4 contacts the protection, the protective plate 17 will rotate outward and open. When the camera 4 descends to a certain height, the road surface can be photographed to check whether there are cracks. When the light intensity is high and there is a reflection on the road surface, the starting motor 25 drives the active gear 24 to rotate. The active gear 24 cooperates with the linkage gear teeth 23 on the smooth part 26, so that the smooth part 26 slides between the two limit balls 31. The smooth part 26 is fixedly connected to the cooperative rack 21, and the cooperative gear 23 is fixedly connected to the cooperative rack 21. The strip 21 cooperates with the cooperative gear 22 to drive the adjustment plate 7 to rotate around the positioning axis 20, and change the angle of the adjustment plate 7, so as to control the light to enter under the supporting bottom plate 2, and reduce the influence of light on the camera. At the same time, the angle of the air outlet can be changed through the adjustment plate 7, so as to control the position of the air blowing on the road surface. When the camera 4 shoots the road surface, the captured image will be transmitted to the display screen 6 in real time, so that the staff can check the cracks on the road surface. For large-area road surface detection, the camera 4 shooting method improves the detection efficiency compared with manual inspection.

[0055] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A road bridge asphalt pavement crack detection device, characterized by: include: An internally hollow mounting frame (1), wherein a bearing base plate (2) is provided at the bottom of the mounting frame (1), a protective cover (3) is symmetrically provided on the bearing base plate (2), a camera (4) with an external power supply is provided in the protective cover (3), a regulating cylinder (5) is provided above the bearing base plate (2), a cylinder rod of the regulating cylinder (5) is connected to the camera (4), and a display screen (6) is provided on the outer wall of the mounting frame (1) on the side close to the human body, and the display screen (6) is electrically connected to the camera (4); It also comprises an adjustment plate (7), wherein the adjustment plate (7) is symmetrically mounted on both sides of the bearing base plate (2), and a linkage adjustment component is provided on the top of the bearing base plate (2), wherein the linkage adjustment component drives the adjustment plate (7) to achieve angle change.

2. The road bridge asphalt pavement crack detection device as claimed in claim 1, characterized in that: The mounting frame (1) is fixedly connected to the supporting base plate (2); driving wheels (8) are provided at the bottom of the supporting base plate (2) near the four corners; and a driving handrail (9) is provided at the top of the supporting base plate (2) and on the side of the mounting frame (1) close to the display screen (6).

3. The road bridge asphalt pavement crack detection device as claimed in claim 1, characterized in that: A fixedly connected partition (10) is provided inside the installation frame (1), a fan (11) with an external power supply is provided on the top of the partition (10), an air delivery duct (12) extending downward through the installation frame (1) on both sides is connected to the air outlet of the fan (11), and the other end of the air delivery duct (12) is connected to air outlets (13) distributed at intervals, and the air outlets (13) are connected to the adjustment plate (7).

4. The road bridge asphalt pavement crack detection device as claimed in claim 1, characterized in that: A mounting frame (14) is symmetrically arranged on the top of the bearing base plate (2), the regulating cylinder (5) is fixedly connected to the top of the mounting frame (14) and the cylinder rod passes downward through the mounting frame (14), and a mounting ring group (15) is symmetrically arranged on the bottom of the bearing base plate (2), the number of the mounting ring group (15) is two, and a rotating rod (16) rotatably connected is arranged between the mounting ring groups (15).

5. The road bridge asphalt pavement crack detection device as claimed in claim 4, characterized in that: A fixedly connected protective plate (17) is provided in the middle of the rotating rod (16); the cross-sectional profile of the protective plate (17) is circular and made of transparent glass; when the protective plate (17) is rotated toward the protective cover (3) to be horizontal, the bottom of the protective cover (3) is sealed; a leaf spring (18) is symmetrically sleeved on the rotating rod (16); one end of the leaf spring (18) is in contact with the mounting ring assembly (15), and the other end is in contact with the protective plate (17).

6. The road bridge asphalt pavement crack detection device as claimed in claim 1, characterized in that: A receiving hole (19) is provided at the top of the adjustment plate (7) and at a corresponding position of the installation frame (1), and positioning shafts (20) are provided inside the two sides of the supporting base plate (2), and the two adjustment plates (7) are rotatably connected to the positioning shafts (20).

7. The road bridge asphalt pavement crack detection device as claimed in claim 6, characterized in that: The linkage adjustment component comprises a coordinated rack (21), a coordinated gear (22), a linkage gear (23), a driving gear (24) and a motor (25); the coordinated gear (22) is located in the receiving hole (19) and is fixedly connected to the adjustment plate (7); the coordinated rack (21) is symmetrically distributed above the top of the bearing base plate (2); the coordinated rack (21) and the coordinated gear (22) cooperate with each other; and the ends of the two coordinated racks (21) away from the coordinated gear (22) have a smooth portion (26).

8. The road bridge asphalt pavement crack detection device as claimed in claim 7, characterized in that: The linkage gear teeth (23) are mounted on the smooth portion (26) and are spaced apart. The linkage gear teeth (23) and the gear teeth on the coordinated rack (21) are arranged vertically. The driving gear (24) is mounted between the two smooth portions (26) and cooperates with the linkage gear teeth (23). A vertical operating shaft (27) is provided on the driving gear (24). A positioning plate (28) connected to the bearing base plate (2) is provided above the driving gear (24). An external power supply of the motor (25) is mounted on the top of the positioning plate (28). The output shaft of the motor (25) is connected to the operating shaft (27).

9. The road bridge asphalt pavement crack detection device as claimed in claim 7, characterized in that: The top of the bearing base plate (2) is symmetrically provided with columns (29) distributed at intervals, and a groove (30) is provided on one side of the column (29) close to the smooth portion (26). The smooth portion (26) is located in the groove (30), and a limiting ball (31) is provided at the top and the bottom of the groove (30). The limiting ball (31) is rotatably embedded in the column (29), and the outer wall of the limiting ball (31) is movably fitted with the smooth portion (26).

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