AU2020103835A4 - Pavement crack routing machine and routing method - Google Patents
Pavement crack routing machine and routing method Download PDFInfo
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- AU2020103835A4 AU2020103835A4 AU2020103835A AU2020103835A AU2020103835A4 AU 2020103835 A4 AU2020103835 A4 AU 2020103835A4 AU 2020103835 A AU2020103835 A AU 2020103835A AU 2020103835 A AU2020103835 A AU 2020103835A AU 2020103835 A4 AU2020103835 A4 AU 2020103835A4
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
- E01C23/0926—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
- E01C23/0933—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
- E01C23/094—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters about vertical or inclined axes, e.g. for core sampling
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/096—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating and filling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/10—Terrestrial scenes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Theoretical Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Road Repair (AREA)
Abstract
The disclosure discloses a pavement crack routing machine and a routing method. A
mechanical arm is rotatable and is fixedly installed on the movable vehicle body; the routing drill
5 adopts a conical twist drill; a driving motor capable of driving the routing drill to rotate is provided
at the end of the mechanical arm, a conical twist drill structure is adopted, a crack can be
accurately identified and positioned through a crack positioning detection system, a routing path
is acquired according to the crack cracking direction, and the routing path extends in the crack
cracking direction with the crack wall as the drill cracking center; the routing drill is installed on
0 the mechanical arm; automatic routing of cracks is carried out according to the optimal route; a
routing drill of which the diameter is not greater than the minimum width of the crack is selected;
routing is guaranteed to meet the requirement, a traditional routing saw is replaced with the
conical twist drill, when the crack shape is irregular, the routing drill can be consistent with the
road crack route, and therefore the use durability of the crack pouring material is improved. The
5 method is easy to operate, resource-saving, short in consumed time and high in working efficiency.
111
FIG. 1
1/2
Description
FIG. 1
1/2
TECHNICAL FIELD The disclosure relates to the technical field of pavement repair devices, in particular to a pavement crack routing machine and a routing method.
BACKGROUND After pavement is put into use, pavement cracks will appear due to weather and traffic load. If the cracks are not filled in time, the rainwater will infiltrate downward from the cracks, so that the structural layer below the pavement base will be softened, resulting in potholes, cracks and
other defects, which seriously affect the driving safety of the pavement. Therefore, it is very important to repair pavement cracks in time to prolong the service life of pavement. The new repair method pours and seals the pavement cracks after routing, and the pavement routing machine is the main mechanized device for performing routing for road repair. The existing pavement routing machine needs workers to operate a device for completion. Sometimes, in order to speed up the working time, there may be some irregularities in operation and non-strict implementation of operating rules. Moreover, when the pavement routing machine operates, a large amount of dust will be generated. Even if the operator wears an anti-dust respirator, an anti dust mask or an anti-dust helmet, it is inevitable that a large amount of dust will be inhaled, resulting in harm to the body. In addition, the current routing machine generally uses a sawing method, and when the crack shape is irregular, it is often difficult to conform to the crack route, which easily leads to over-routing and under-routing in the routing process.
SUMMARY The object of the disclosure is to provide a pavement crack routing machine and a routing method, so as to overcome the defects of the prior art. In order to achieve the above object, the disclosure adopts the following technical solution. A pavement crack routing machine comprises a routing drill and a mechanical arm controlling the movement of the routing drill, wherein the mechanical arm is rotatable and is fixedly installed on a movable vehicle body, the routing drill adopts a conical twist drill, and a driving motor capable of driving the routing drill to rotate is provided at the end of the mechanical arm. Further, the pavement crack routing machine further comprises a crack positioning detection system installed on the movable vehicle body, wherein the crack positioning detection system comprises a road image acquiring module, an image processing module, a positioning module, a control module, a storage module and a generating module, wherein the positioning module is configured to acquire real-time GPS positioning information, the road image acquiring module is configured to acquire road image information and send the acquired road image information to the image processing module for image processing, the image processing module detects crack information in the acquired road image information based on a crack identifying method of deep learning, when cracks are found on the pavement, the image processing module sends the road image information, the crack identification result and the positioning information acquired from the positioning module to the generating module to generate a road detection report; the storage module is configured to store the acquired road image information and the road detection report, the control module is respectively connected with the road image acquiring module, and the image processing module, the positioning module, the storage module and the generating module, and controls the routing drill on the mechanical arm to accurately position and move to the crack according to the road detection report of the control module. Further, the road image acquiring module comprises an illumination module and a camera, wherein the camera adopts a high-definition camera, and the illumination module is used for light intensity compensation. Further, the image processing module is configured to preprocess the acquired road image information to eliminate noises on the pavement, and then perform edge detection processing on the road images to acquire road crack position. Further, the movable vehicle body is further provided with a drill warehouse and a control bin. A pavement crack routing method comprises the steps of: step 1), acquiring road crack information and positioning the cracks by adopting a crack positioning detection system, wherein the road crack information comprises crack width and crack cracking direction; step 2), planning a drill cracking path according to the acquired road crack information and the crack positioning information; step 3), selecting a routing drill of which the diameter is not greater than the minimum width of the crack, installing the routing drill at the end of the mechanical arm, routing the routing drill along the drill cracking path according to the crack positioning information, thereby completing the routing of road cracks. Further, in step 2), when the drill cracking path is planned according to the acquired road crack information and the crack positioning information, the drill wall of the routing drill is attached to one side wall of the crack, runs along the crack cracking direction to the end of the crack, and then runs along the other side wall of the crack in the opposite direction to the initial position to complete the crack routing. Further, when the crack width is smaller than the diameter of the routing drill, the path of the center line of the two side walls of the crack along the crack cracking direction is the driving path of the rotating shaft center of the routing drill. Compared with the prior art, the disclosure has the following beneficial technical effects. The disclosure discloses a pavement crack routing machine, comprising a routing drill and a mechanical arm controlling the movement of the routing drill. The mechanical arm is rotatable and is fixedly installed on the movable vehicle body, the routing drill adopts a conical twist drill, a driving motor capable of driving the routing drill to rotate is provided at the end of the mechanical arm, a conical twist drill structure is adopted, a routing drill of which the diameter is not greater than the minimum width of the crack is selected according to the crack width, routing is guaranteed to meet the requirement, a traditional routing saw is replaced with the conical twist drill, when the crack shape is irregular, the routing drill can be consistent with the road crack route, and therefore the use durability of the crack pouring material is improved. Further, the pavement crack routing machine further comprises a crack positioning detection system installed on the movable vehicle body, which is used to detect road cracks and generate road detection reports. According to the road detection reports of the control module, the routing drill on the mechanical arm is controlled to accurately position and move to the cracks, and the control module and the positioning module are used to control the routing drill to realize the accurate positioning and routing of cracks, thus realizing automatic routing, requiring no manual operation in the whole process, and having the advantages of being easy to operate, resource saving, short in consumed time and high in working efficiency. The disclosure discloses a pavement crack routing method, a crack can be accurately identified and positioned through the crack positioning detection system, a routing path is acquired according to the crack cracking direction, and the routing path extends in the crack cracking direction with the crack wall as the drill cracking center; the routing drill is installed on the mechanical arm; automatic routing of cracks is carried out according to the optimal route, a traditional routing saw is replaced with the conical twist drill, and when the crack shape is irregular, the routing drill can be consistent with the road crack route, and therefore the use durability of the crack pouring material is improved.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural diagram of the disclosure.
FIG. 2 is a system control flow chart according to an embodiment of the disclosure. In the figures, 1, road image acquiring module; 2, control bin; 3, mechanical arm; 4, drill warehouse; 5, routing drill; 6, movable vehicle body.
DESCRIPTION OF THE EMBODIMENTS The disclosure will be described in further detail with reference to the accompanying drawings. As shown in FIG. 1 and FIG. 2, a pavement crack routing machine comprises a routing drill 5 and a mechanical arm 3 controlling the movement of the routing drill 5, wherein the mechanical arm 3 is rotatable and is fixedly installed on a movable vehicle body 6, the routing drill 5 adopts a conical twist drill, and a driving motor capable of driving the routing drill 5 to rotate is provided at the end of the mechanical arm 3; during use, the movable vehicle body is moved to a crack that needs routing, and routing drill of which the diameter is not greater than the minimum width of the crack is selected according to the crack width. After the routing drill 5 are fixed and installed, the routing drill 5 is attached to one side wall of the crack, starts cutting along the crack cracking direction, rotates for a circle along the crack cracking direction, and finishes routing and cutting the crack. A suitable drill size can be selected for cracks with different widths and depths, routing is guaranteed to meet the requirement, a traditional routing saw is replaced with the conical twist drill, when the crack shape is irregular, the routing drill can be consistent with the road crack route, and therefore the use durability of the crack pouring material is improved. A force sensor is fixedly installed at the front end of the mechanical arm 3. The cutting speed is adjusted according to the stress of the routing drill 5 during cutting, so as to ensure that the speed is not too high to cause damage to the drill device during cutting. Further, in order to improve the working efficiency of the pavement crack routing machine, a crack positioning detection system is installed on the movable vehicle body 6, wherein the crack positioning detection system comprises a road image acquiring module 1, an image processing module, a positioning module, a control module, a storage module and a generating module, wherein the positioning module is configured to acquire real-time GPS positioning information, the road image acquiring module is configured to acquire road image information and send the acquired road image information to the image processing module for image processing, the image processing module detects crack information in the acquired road image information based on a crack identifying method of deep learning, when cracks are found on the pavement, the image processing module sends the road image information, the crack identification result and the positioning information acquired from the positioning module to the generating module to generate a road detection report; the storage module is configured to store the acquired road image information and the road detection report, the control module is respectively connected with other modules and the mechanical arm control module, and the mechanical arm control module is configured to control the mechanical arm to rotate and the on/off of the routing drill 5, and control the routing drill 5 on the mechanical arm 3 to accurately position and move to the crack according to the road detection report. The crack is routed along the crack cracking direction. The disclosure acquires the road image information by shooting the pavement. After processing, the pavement cracks in the pavement image can be accurately detected. The control module and the positioning module are used to control the routing drill 5 to realize the accurate positioning and routing of cracks, thus realizing automatic routing, requiring no manual operation in the whole process, and having the advantages of being easy to operate, resource-saving, short in consumed time and high in working efficiency. The road image acquiring module comprises an illumination module and a camera, wherein the camera adopts a high-definition camera, and the illumination module is used for light intensity compensation, so as to improve the camera image acquisition clarity. The camera is installed in front of the movable vehicle body 6. When the movable vehicle body 6 drives to the vicinity of the crack, the road image information on the road surface is acquired, and the road cracks are identified and positioned and are transmitted to the system for storage and for use. The image processing module is configured to preprocess the acquired road image information to eliminate noises on the pavement, and then perform edge detection processing on the road image information with noises removed to acquire road cracks of the road image information with noises removed. Specifically, the existing methods can be used to acquire road crack information, such as the road crack detection method based on deep learning. The crack positioning detection system can accurately identify and position cracks, and acquire the routing path according to the crack cracking direction. The routing path extends in the crack cracking direction with the crack wall as the drill cracking center; the routing drill is installed on the mechanical arm; automatic routing of cracks is carried out according to the optimal route. The movable vehicle body 6 is further provided with a drill warehouse 4 and a control bin 2, wherein the drill warehouse 4 is used for placing routing drills of different models, and the routing drills can be conveniently replaced according to the requirements of different crack cracking widths; the image processing module, the positioning module, the control module, the storage module and the generating module are integrated in the control bin 2. A pavement crack routing method comprises the steps of: step 1), acquiring road crack information and positioning the cracks by adopting a crack positioning detection system, wherein the road crack information comprises crack width and crack cracking direction; step 2), planning a drill cracking path according to the acquired road crack information and the crack positioning information; step 3), selecting a routing drill of which the diameter is not greater than the minimum width of the crack, installing the routing drill at the end of the mechanical arm, routing the routing drill along the drill routing path according to the crack positioning information, thereby completing the routing of road cracks. In step 2), when the drill cracking path is planned according to the acquired road crack information and the crack positioning information, the drill wall of the routing drill is attached to one side wall of the crack, runs along the crack cracking direction to the end of the crack, and then runs along the other side wall of the crack in the opposite direction to the initial position to complete the crack routing. When the crack width is smaller than the diameter of the routing drill, the path of the center line of the two side walls of the crack along the crack cracking direction is the driving path of the rotating shaft center of the routing drill. The disclosure can solve the problems that the existing road repair construction process needs to manually move on the pavement with the aid of the existing mobile devices, and needs to manually select corresponding routing devices according to different cracks. Compared with the existing pavement routing devices, the routing machine in this disclosure uses a crack positioning detection system to realize crack detection, and uses a control module to realize the positioning control of the routing drill 5 on the mechanical arm 3 on the positioning of the crack according to the positioning module. The routing drill 5 realizes the routing of the crack, requiring no manual operation in the whole process, and having the advantages of being easy to operate, resource-saving, short in consumed time and high in working efficiency. According to the disclosure, a drill adjusting device is designed, suitable drill sizes can be selected for cracks with different widths and depths of each structural form, routing is guaranteed to meet the requirement, a traditional routing saw is replaced with a drill, when the crack shape is irregular, the routing drill can be consistent with the road crack route, and therefore the use durability of the crack pouring material is improved. The disclosure greatly saves the consumption of manpower, material resources and financial resources, is more efficient, economical, environment-friendly and safe, has less influence on road traffic flow and a wide application range, and is beneficial to generalization and popularization. The above is only a preferred embodiment of the disclosure, and is not used to limit the disclosure. For those skilled in the art, the disclosure can be modified and varied variously. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the disclosure shall be included in the protection scope of the disclosure. In the claims which follow, and in the preceding description, except where the context requires otherwise due to express language or necessary implication, the word "comprise" and variations such as "comprises" or "comprising" are used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the apparatus and method as disclosed herein.
Claims (5)
1. A pavement crack routing machine, comprising a routing drill and a mechanical arm controlling the movement of the routing drill, wherein the mechanical arm is rotatable and is fixedly installed on a movable vehicle body, the routing drill adopts a conical twist drill, and a driving motor capable of driving the routing drill to rotate is provided at the end of the mechanical arm.
2. The pavement crack routing machine according to claim 1, further comprising a crack positioning detection system installed on the movable vehicle body, wherein the crack positioning detection system comprises a road image acquiring module, an image processing module, a positioning module, a control module, a storage module and a generating module, wherein the positioning module is configured to acquire real-time GPS positioning information, the road image acquiring module is configured to acquire road image information and send the acquired road image information to the image processing module for image processing, the image processing module detects crack information in the acquired road image information based on a crack identifying method of deep learning, when cracks are found on the pavement, the image processing module sends the road image information, the crack identification result and the positioning information acquired from the positioning module to the generating module to generate a road detection report; the storage module is configured to store the acquired road image information and the road detection report, the control module is respectively connected with the road image acquiring module, and the image processing module, the positioning module, the storage module and the generating module, and controls the routing drill on the mechanical arm to accurately position and move to the crack according to the road detection report of the control module.
3. The pavement crack routing machine according to claim 1, wherein the road image acquiring module comprises an illumination module and a camera, wherein the camera adopts a high definition camera, and the illumination module is used for light intensity compensation;
wherein the image processing module is configured to preprocess the acquired road image information to eliminate noises on the pavement, and then perform edge detection processing on the road image information with noises removed to acquire road cracks of the road image information with noises removed;
wherein the movable vehicle body is further provided with a drill warehouse and a control bin.
4. A pavement crack routing method based on the pavement crack routing machine according to claim 2, comprising the steps of: step 1), acquiring road crack information and positioning the cracks by adopting a crack positioning detection system, wherein the road crack information comprises crack width and crack cracking direction; step 2), planning a drill cracking path according to the acquired road crack information and the crack positioning information; step 3), selecting a routing drill of which the diameter is not greater than the minimum width of the crack, installing the routing drill at the end of the mechanical arm, routing the routing drill along the drill routing path according to the crack positioning information, thereby completing the routing of road cracks.
5. The pavement crack routing method according to claim 4, wherein in step 2), when the drill cracking path is planned according to the acquired road crack information and the crack positioning information, the drill wall of the routing drill is attached to one side wall of the crack, runs along the crack cracking direction to the end of the crack, and then runs along the other side wall of the crack in the opposite direction to the initial position to complete the crack routing;
wherein when the crack width is smaller than the diameter of the routing drill, the path of the center line of the two side walls of the crack along the crack cracking direction is the driving path of the rotating shaft center of the routing drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020103835A AU2020103835A4 (en) | 2020-12-02 | 2020-12-02 | Pavement crack routing machine and routing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020103835A AU2020103835A4 (en) | 2020-12-02 | 2020-12-02 | Pavement crack routing machine and routing method |
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| AU2020103835A4 true AU2020103835A4 (en) | 2021-02-11 |
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| AU2020103835A Active AU2020103835A4 (en) | 2020-12-02 | 2020-12-02 | Pavement crack routing machine and routing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356094A (en) * | 2021-07-13 | 2021-09-07 | 重庆交通大学 | Road and bridge repair and supplement fixing device |
| CN113607113A (en) * | 2021-07-31 | 2021-11-05 | 郭旸 | Road detection road surface crack degree of depth measuring device |
| CN113931043A (en) * | 2021-10-27 | 2022-01-14 | 王四献 | Pavement maintenance evaluation equipment |
| CN115639202A (en) * | 2022-09-29 | 2023-01-24 | 广西北投交通养护科技集团有限公司 | Measuring device for road flaw detection |
-
2020
- 2020-12-02 AU AU2020103835A patent/AU2020103835A4/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356094A (en) * | 2021-07-13 | 2021-09-07 | 重庆交通大学 | Road and bridge repair and supplement fixing device |
| CN113607113A (en) * | 2021-07-31 | 2021-11-05 | 郭旸 | Road detection road surface crack degree of depth measuring device |
| CN113931043A (en) * | 2021-10-27 | 2022-01-14 | 王四献 | Pavement maintenance evaluation equipment |
| CN115639202A (en) * | 2022-09-29 | 2023-01-24 | 广西北投交通养护科技集团有限公司 | Measuring device for road flaw detection |
| CN115639202B (en) * | 2022-09-29 | 2024-05-28 | 广西北投交通养护科技集团有限公司 | Measuring device for road flaw detection |
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