CN210766282U

CN210766282U - Bituminous paving crack detection device

Info

Publication number: CN210766282U
Application number: CN201920260871.5U
Authority: CN
Inventors: 吕成利
Original assignee: PAN-CHINA CONSTRUCTION GROUP
Current assignee: PAN-CHINA CONSTRUCTION GROUP
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2020-06-16
Anticipated expiration: 2029-02-28

Abstract

The utility model relates to the technical field of pavement detection equipment, in particular to a bituminous pavement crack detection device, which comprises a movable carrier, wherein the movable carrier is rotatably connected with a tail shaft, a pavement lighting device is fixed on the tail shaft, the movable carrier is also fixedly connected with a fixed rod, and the fixed rod is rotatably connected with an image acquisition device; the moving carrier is provided with a servo motor and a slide block, the servo motor is connected with a screw rod, the slide block is in threaded connection with the screw rod, and the slide block is also hinged with the image acquisition equipment through a connecting rod; the high-pressure fan is further arranged on the movable carrier and connected with the air spraying head and the air spraying cover, so that the road surface can be cleaned, and shaking during collection is reduced. The utility model provides an among the prior art can't adjust the camera and the illumination angle obtains the problem of best analysis image to improve image quality, accelerate the image analysis process.

Description

Bituminous paving crack detection device

Technical Field

The utility model relates to a road surface check out test set technical field, concretely relates to bituminous paving crack detection device.

Background

At present, the traditional manual detection mode is still used mainly in the aspect of road surface condition detection in China, and the traditional method is time-consuming, labor-consuming, has potential safety hazards, is not objective enough, and can not meet the requirement of road development more and more. The road surface damage condition detection technology based on image processing can detect road condition information at normal traffic flow speed, and practice proves that the technology meets the requirement of modern road maintenance management and is the development direction of future road surface detection technology.

The crack identification method based on the crack two-dimensional image is adopted, the analysis basis is the difference between the illumination characteristic of the crack under a certain illumination condition and the pavement, but the crack is not the essential characteristic of the crack, and because the two-dimensional image sensing principle cannot be thoroughly overcome, the illumination condition and the shadow in the acquisition process become interference factors, and errors are easily distinguished. In the prior art, laser is adopted to irradiate a road surface, and a camera receives light reflected by the road surface to acquire images. However, in this way, the irradiation angle of the laser and the collection angle of the camera are fixed, and the camera and the laser cannot be adjusted to obtain an optimum image of light for analysis, which affects the image analysis process; moreover, as sundries such as stones, leaves and the like may exist on the road surface, the camera is easy to shake during image acquisition, errors are caused to measurement, and the road surface measuring device cannot adapt to various road surface conditions.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a bituminous paving crack detection device solves the problem that can't adjust camera and illumination angle and obtain the best analysis image among the prior art to improve and gather image quality, accelerate the analysis process.

The scheme is basically as follows:

the utility model provides an asphalt pavement crack detection device, is connected with the tailshaft including removing the carrier, removes to rotate on the carrier, is fixed with the road surface lighting apparatus on the tailshaft, removes still fixedly connected with dead lever on the carrier, rotates on the dead lever and is connected with image acquisition equipment.

Has the advantages that:

the tail shaft is manually rotated, so that the angle between the light rays emitted by the road surface lighting equipment on the tail shaft and the road surface can be adjusted, and the angle between the light rays and the road surface can be adjusted because the asphalt road surface is not smooth, so that tiny shadows on the asphalt road surface can be reduced, the gray level of an image can be changed, and the image analysis is facilitated; the manual rotation image acquisition equipment can adjust the collection angle of image acquisition equipment, is convenient for obtain the best visual angle of illumination, makes the image more clear, reduces the analysis error.

Furthermore, a sliding block is connected to the movable carrier in a sliding mode, the sliding block is hinged to a connecting rod, and the connecting rod is hinged to the image acquisition equipment.

When the sliding block is pushed to slide by manual or power equipment, the sliding block pushes the image acquisition equipment through the connecting rod, so that the image acquisition equipment rotates, and when the installation position of the image acquisition equipment is too high, the rotation control of the image acquisition equipment is convenient.

Furthermore, a screw rod is rotatably connected to the movable carrier and is in threaded connection with the sliding block.

Rotatory lead screw can give the gliding power of slider through the screw when the lead screw rotates, can reduce the pitch of lead screw to improve the degree of accuracy to slider displacement, improve and carry out the precision control to image acquisition equipment angle.

Further, the screw rod is connected with a servo motor. Is beneficial to automatic control.

Furthermore, a road surface cleaning mechanism is arranged on the movable carrier.

The road surface on which the movable carrier runs is cleaned, sundries such as small stones, leaves and the like on the road surface are clear, the shaking in the running process of the movable carrier is reduced, the error of the shaking on the collected information is avoided, and the accuracy of the collected information is improved.

Further, the road surface cleaning mechanism comprises a high-pressure fan, and the high-pressure fan is connected with a plurality of air spraying heads facing the road surface.

A high-pressure fan is used for generating high-speed airflow on the air nozzle, so that sundries on the road surface are blown away; compared with the use of a brush for cleaning, the brush cleaner avoids the trouble caused by repeatedly replacing the brush; and compared with the washing by using water flow, the water reflection is avoided from forming noise points on the image.

Furthermore, the high pressure positive blower is also connected with an air injection cover, and the air injection cover faces the image acquisition equipment.

The air-jet head can raise a lot of dust when cleaning the road surface, and high pressure positive blower produces the air current around image acquisition equipment through the jet-propelled cover to avoid the camera lens of image acquisition equipment to go up the deposition ash, guarantee that the image is clear effective always.

Further, the road surface lighting apparatus employs a laser. The laser is small in scattering relative to a point light source, and illumination balance at each position can be guaranteed.

Further, the road surface lighting equipment adopts an LED lamp. Compared with a laser, the LED lamp has a wide irradiation range and relatively low energy consumption.

Further, the air nozzles are arranged in an arc shape. Therefore, sundries on the road surface can be blown to the two sides of the moving carrier in the advancing direction, and the sundries are prevented from being accumulated in front of the moving carrier.

Drawings

Fig. 1 is the utility model relates to a schematic diagram is looked sideways at to bituminous paving crack detection device inner structure's right side.

Fig. 2 is the utility model relates to a bituminous paving crack detection device inner structure's schematic diagram that overlooks.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a movable carrier 1, a tail shaft 20, a laser 21, a rotating shaft 30, a camera 31, a servo motor 40, a screw rod 41, a sliding block 42, a sliding rod 43, a connecting rod 44, a high-pressure fan 50, a jet head 51 and a jet cover 52.

The examples are essentially as follows:

a device for detecting asphalt pavement cracks is shown in figure 1 and comprises a movable carrier 1, wherein the movable carrier 1 can be a vehicle such as a trolley, in figure 1, the movable carrier 1 runs from left to right, the left end of the movable carrier 1 is a tail part, and the right end of the movable carrier 1 is a head part. A tail shaft 20 is rotatably connected to the tail portion of the moving carrier 1, as shown in fig. 1 and fig. 2, a plurality of road lighting devices are fixed on the tail shaft 20 by bolts, the road lighting devices may adopt a laser 21 or a vehicle LED headlight (35W), the embodiment specifically adopts a laser (RL650-50G3), and the lasers emitted by the laser 21 are located on the same plane and are parallel to each other. The angle of the laser to the road surface can be changed by rotating the tail shaft 20 by hand.

As shown in fig. 1 and fig. 2, the tail of the mobile carrier 1 is further rotatably connected with an image capturing device, the image capturing device includes a camera 31 and a rotating shaft 30, the rotating shaft 30 is rotatably connected with the mobile carrier 1, the camera 31 is fixed on the rotating shaft 30 by using a bolt, and the camera 31 adopts an area array CCD (scA1600-28 fm). A servo motor 40 is fixed on the movable carrier 1, an output shaft of the servo motor 40 is fixedly connected with a screw rod 41, and the left end of the screw rod 41 is rotatably connected with the movable carrier 1 through a blind hole. A sliding rod 43 is further fixed on the movable carrier 1, the sliding rod 43 is parallel to the screw rod 41, and a sliding block 42 is connected on the sliding rod 43 in a sliding manner; the lower part of the sliding block 42 is provided with a threaded hole, and the screw rod 41 is in threaded connection with the sliding block 42 through the threaded hole. The upper part of the sliding block 42 is fixed with a hinge shaft which is hinged with a connecting rod 44; a hinge shaft is also fixed on the rotating shaft 30, and the left end of the connecting rod 44 is hinged with the hinge shaft on the rotating shaft 30.

The movable carrier 1 is also provided with a road surface cleaning mechanism, the road surface cleaning mechanism comprises a high pressure fan 50(OKCF-400), the high pressure fan 50 is connected with a plurality of air nozzles 51 through air pipes, the air nozzles 51 are arranged at the head part of the movable carrier 1, as shown in figure 2, the air nozzles 51 are arranged in an arc shape, and the axes of the air nozzles 51 form an angle of 30 degrees with the ground. The high pressure fan 50 is also connected with two air injection covers 52 through air pipes, the air injection cover 52 is positioned at the right side of the camera 31, and the opening of the air injection cover 52 faces the camera 31.

The mobile carrier 1 is also provided with a power supply and other data acquisition and analysis equipment, and electric equipment such as the laser 21, the camera 31, the servo motor 40 and the high-pressure fan 50 are electrically connected with the power supply.

The tail shaft 20 is manually rotated for different asphalt pavements, so that the irradiation angle of the laser is adjusted. And then the servo motor 40 is started to rotate the screw rod 41, the slide block 42 slides on the slide rod 43 when the screw rod 41 rotates, and the slide block 42 drives the rotating shaft 30 to rotate through the connecting rod 44 when sliding, so that the image acquisition angle of the camera 31 is changed, and the image under the over-optimal illumination is convenient.

When the moving carrier 1 runs on the road surface to collect images, the high pressure fan 50 is started, gas compressed by the high pressure fan 50 is transmitted to the air nozzle 51 and the air nozzle cover 52 through the gas transmission pipe, and high-speed airflow is formed when flowing out from the air nozzle 51, so that sundries such as stones and leaves on the ground can be blown to two sides, shadows formed by the sundries are reduced, meanwhile, the shaking of the running process of the moving carrier 1 is reduced, the accuracy of image collection is improved, and the accuracy of data analysis is facilitated. The airflow from the air cap 52 flows to the camera 31, when the road surface is clean, a lot of dust is raised, and the airflow from the air cap 52 can prevent the dust from accumulating on the camera 31 to affect the definition of the image.

The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics in the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides an asphalt pavement crack detection device, includes the removal carrier, its characterized in that: the movable carrier is rotatably connected with a tail shaft, a road surface lighting device is fixed on the tail shaft, a fixed rod is fixedly connected to the movable carrier, and an image acquisition device is rotatably connected to the fixed rod.

2. The asphalt pavement crack detection device according to claim 1, characterized in that: the movable carrier is connected with a sliding block in a sliding mode, the sliding block is hinged to a connecting rod, and the connecting rod is further hinged to the image acquisition equipment.

3. The asphalt pavement crack detection device according to claim 2, characterized in that: the movable carrier is rotatably connected with a screw rod, and the screw rod is in threaded connection with the sliding block.

4. The asphalt pavement crack detection device according to claim 3, characterized in that: the screw rod is connected with a servo motor.

5. The asphalt pavement crack detection device according to any one of claims 1 to 4, characterized in that: and a road surface cleaning mechanism is arranged on the movable carrier.

6. The asphalt pavement crack detection device according to claim 5, characterized in that: the road surface cleaning mechanism comprises a high-pressure fan, and the high-pressure fan is connected with a plurality of air spraying heads facing the road surface.

7. The asphalt pavement crack detection device according to claim 6, characterized in that: the high pressure positive blower is still connected with the jet hood, and the jet hood is towards image acquisition equipment.

8. The asphalt pavement crack detection device according to claim 5, characterized in that: the road surface lighting equipment adopts a laser.

9. The asphalt pavement crack detection device according to claim 5, characterized in that: the road surface lighting equipment adopts an LED lamp.

10. The asphalt pavement crack detection device according to claim 6, characterized in that: the air nozzles are arranged in an arc shape.