CN113686875A - Equipment and method for detecting defects of inner wall of pier - Google Patents
Equipment and method for detecting defects of inner wall of pier Download PDFInfo
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- CN113686875A CN113686875A CN202110954437.9A CN202110954437A CN113686875A CN 113686875 A CN113686875 A CN 113686875A CN 202110954437 A CN202110954437 A CN 202110954437A CN 113686875 A CN113686875 A CN 113686875A
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- 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
- G01N21/8806—Specially adapted optical and illumination features
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- 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
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- 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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
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- 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
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a pier inner wall defect detection device and a pier inner wall defect detection method, wherein the device comprises a motion control assembly, a telescopic support rod and an imaging assembly are arranged outside the motion control assembly, and a roller is arranged at the end part of the telescopic support rod; the imaging assembly can rotate 360 degrees around the motion control assembly, and the imaging assembly and the motion control assembly are in communication connection with a control center. According to the invention, through combination of the mechanical structure and the electrical equipment, the equipment can be always attached to the inner wall of the pier, and has corresponding friction force, so that the inner wall of the pier can stably slide up and down, and meanwhile, the imaging module and the inner wall of the pier can be always kept at a preset distance, thereby ensuring that the equipment can more accurately acquire clear image data required by inner wall defect detection.
Description
Technical Field
The invention belongs to the technical field of pier defect detection, and particularly relates to pier inner wall defect detection equipment and a method.
Background
The pier mainly comprises a top cap and a pier body. The abutment mainly comprises a top cap and an abutment body. The top cap is used for dispersing and uniformly transmitting the large and concentrated force transmitted from the bridge span support to the pier body and the platform body.
The piers are classified into two major types, i.e., gravity type piers and light type piers, and one of them is classified into a solid type pier, a hollow type pier, a pile type pier or a pillar type pier. The light pier is a hollow pier, the appearance of which is similar to that of a gravity pier, but the light pier is a hollow thin-wall pier.
The internal crack defect detection of the hollow pier is characterized in that a relatively smooth cement pouring surface is adopted mostly for the surface material of the inner wall of the hollow pier, and meanwhile, light rays inside the hollow pier are not clear enough, so that great uncertainty exists in a manual detection method, and the sizes of inlets of all piers are different, the diameters of the inner spaces of the piers are also different, and certain difficulty is caused in manual detection.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a pier inner wall defect detection device and a pier inner wall defect detection method.
The purpose of the invention is realized by the following technical scheme:
a pier inner wall defect detection device comprises a motion control assembly, wherein a telescopic supporting rod and an imaging assembly are arranged outside the motion control assembly, and a roller is arranged at the end part of the telescopic supporting rod; the imaging assembly can rotate 360 degrees around the motion control assembly, and the imaging assembly and the motion control assembly are in communication connection with a control center.
Further, the imaging assembly further comprises a high-power line laser light source.
Further, the imaging assembly comprises a linear array high-resolution lens.
Furthermore, an electric cylinder is arranged inside the telescopic supporting rod and generates pressing force which acts on the telescopic supporting rod as same as the inner wall of the bridge pier.
Furthermore, the imaging assembly comprises a telescopic rod, and the telescopic rod is connected with the motion control assembly and can rotate for 360 degrees around the motion control assembly.
Furthermore, the outer end of the telescopic rod is provided with a pulley, and the imaging module is fixed at a preset distance away from the outer end of the telescopic rod.
Furthermore, the diameter of the pulley at the outer end part of the telescopic rod is smaller than that of the telescopic rod.
Furthermore, the pulley part is arranged outside the telescopic rod, and the rest part is arranged in the telescopic rod.
On the other hand, the invention also provides a method for detecting the defects of the inner wall of the pier, which adopts any one of the devices for detecting the defects of the inner wall of the pier, and comprises the following steps:
s1: putting the detection equipment into the detection port;
s2: the detection equipment moves inwards according to a preset speed, and an imaging module obtains image data of the whole interval by rotating 360 degrees in each action interval;
s3: the detection equipment transmits the image data to the control center;
s4: the control center preprocesses the image, then detects the image through a preset visual detection model, and determines the defects of the inner wall of the bridge pier;
s5: steps S1-S4 are repeated until the detection device acquires all images.
Further, the distance between the imaging module and the inner wall of the bridge pier is kept unchanged all the time when the imaging module acquires image data.
The invention has the beneficial effects that:
(1) according to the invention, through combination of the mechanical structure and the electrical equipment, the whole equipment can be always attached to the inner wall of the pier, and has corresponding friction force, so that the inner wall of the pier can stably slide up and down, and meanwhile, the imaging module and the inner wall of the pier can be always kept at a preset distance, thereby ensuring that the equipment can more accurately acquire clear image data required by inner wall defect detection.
(2) The invention skillfully utilizes the end part of the telescopic rod to be always attached to the inner wall of the pier, and utilizes the telescopic support rod to ensure that the whole equipment still keeps stable movement in the working space with different diameters in the pier, thereby ensuring that the working space of the imaging module is kept fixed with the inner wall of the pier.
Drawings
Fig. 1 is a schematic top view of a pier inner wall defect detection device according to embodiment 1 of the present invention;
fig. 2 is a schematic view illustrating a working principle of a pier inner wall defect detecting apparatus used in the pier inner wall defect detecting method according to embodiment 2 of the present invention;
fig. 3 is a flow chart of a pier inner wall defect detection method provided in embodiment 2 of the present invention.
Reference numerals: the method comprises the following steps of 1-inner wall of a pier, 2-rollers, 3-telescopic supporting rods, 4-motion control components, 5-telescopic rods, 6-imaging components and 7-pulleys at the end parts of the telescopic rods.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, is a schematic view of a top view structure of a pier inner wall defect detecting apparatus provided in this embodiment. This equipment includes motion control subassembly 4, and motion control subassembly 4 outside is provided with four scalable bracing pieces 3, and the outer tip of scalable bracing piece 3 is provided with gyro wheel 2, and gyro wheel 2 laminates with pier inner wall 1 all the time to keep there being corresponding frictional force, thereby can make whole equipment slide about the pier inner wall steadily. The motion control component 4 is in communication connection with the control center and receives a work instruction of the control center to execute a task.
The inside of scalable bracing piece 3 is provided with the electric jar, and after receiving the effort of pier inner wall 1, the electric jar can produce the packing force of the same size and make scalable bracing piece 3 guarantee to laminate with pier inner wall 1 all the time and the formation of image subassembly is in stable perpendicular decline state all the time. If adopt the scalable bracing piece of traditional spring, then can have four scalable bracing pieces atress inhomogeneous thereby to lead to the horizontal direction of motion control subassembly to rock, and then influenced imaging component 6 and obtained the problem of stable image data. The diameters of planes with different heights in the bridge pier are different, and in the process that the equipment continuously moves downwards to obtain image data, the telescopic supporting rod 3 can enable the motion control assembly 4 not to shake in the horizontal direction due to the change of the acting force of the inner wall 1 of the bridge pier caused by the change of the diameters of the planes through the pressing force which is provided by the internal electric cylinder and has the same size with the acting force of the inner wall 1 of the bridge pier.
The imaging assembly 6 is fixed at one position of the telescopic rod 5 close to the end part and keeps a fixed distance with the end part of the telescopic rod 5, and a telescopic rod end pulley 7 is arranged at the end part of the telescopic rod 5. Telescopic link tip pulley 7 is less than gyro wheel 2, and telescopic link tip pulley 7 most is located inside telescopic link 5, telescopic link tip pulley 7 only has the subtotal to expose from the telescopic link tip and laminate with pier inner wall 1, and the surface that the smaller pulley meets crooked or unevenness just can avoid as far as having the dead angle for telescopic link tip pulley 7 can accomplish 360 degrees circulations at pier inner wall 1 smoothly, and then shoots complete clear pier inner wall 1 image. In addition, this embodiment fixes the working distance between the imaging component 6 and the inner wall 1 of the pier through a mechanical structure, rather than the traditional technical scheme that the working distance is realized through zooming or ranging transmission, one of the reasons is that the surface of the inner wall 1 of the pier is not completely smooth, the surface cement is uneven, if the reliability of data obtained through laser ranging is not high enough, the working distance between the imaging component 6 and the inner wall 1 of the pier cannot be maintained at a fixed value, and thus the shot picture is not complete and clear enough.
In this embodiment, the imaging component 6 is a 2K linear array camera, the light source is a high power line laser light source, the high power line laser light source can provide enough brightness for the imaging component 6 to obtain clear image data, the lens is a high resolution lens special for linear arrays, the width of a scanning field of view is 700mm each time, the working distance between the camera and a measured object is about 1000mm, the imaging pixel precision of the device can reach 0.35mm, the device adopts a gigabit portal line scanning camera, the scanning and image-taking speed can reach 9 m/s at most, but in order to ensure that the imaging component and a mechanical structure are matched precisely, the overall stability of the device meets the requirement, and the scanning and image-taking speed needs to be configured according to actual conditions. Meanwhile, the speed of the roller 2 driving the whole device to move downwards needs to be configured according to actual conditions, so that when the device moves towards the interior of the bridge pier, the imaging assembly 6 can acquire complete image data of the inner wall 1 of the bridge pier. The downward moving speed of the equipment is mainly configured according to the scanning field width and the scanning and drawing speed.
The imaging assembly of the detection device is in communication connection with the control center, the detection device sends the collected image data to the control center, and the control center processes the data to obtain a final detection result of the defects of the inner wall of the bridge pier. Optionally, the control center adopts an industrial personal computer, and the industrial personal computer performs image preprocessing on the imaging information and then sends the imaging information into the inner wall defect algorithm model for AI algorithm visual inspection. And the detection result is displayed and demonstrated by a graphical interface.
The pier inner wall defect detection equipment that this embodiment provided combines through mechanical structure and electrical equipment, can make whole equipment and pier inner wall laminate all the time, has corresponding frictional force again, can be when pier inner wall slides from top to bottom steadily, can also guarantee that imaging module and pier inner wall remain predetermined interval all the time, and then guarantee that equipment accurately acquires the required clear image data of inner wall defect detection more.
The utility model provides a pair of pier inner wall defect detection equipment still utilizes telescopic link tip and pier inner wall to laminate all the time ingeniously to and utilize scalable bracing piece to make the working space of different diameters of whole equipment in the pier still remain the steady removal, thereby make imaging module's working interval and pier inner wall remain fixed, compare in the traditional scheme that keeps imaging interval need zoom or range finding transmission through comparatively complicacy, this scheme structure is simple and practical more.
Example 2
As shown in fig. 3, the flowchart is a block diagram of a method for detecting defects of an inner wall of a pier provided in this embodiment, and the method specifically includes:
the method comprises the following steps: put into the check out test set from the detection mouth, whole equipment can be automatic to inside action, and every interval of acting, the formation of image subassembly can all 360 degrees carry out a data acquisition. And the motion control component of the detection equipment receives the command of the control center and then executes the task. As shown in fig. 2, the schematic view of the working principle of the pier inner wall defect detecting device adopted in the pier inner wall defect detecting method provided by the embodiment is that the device enters from the pier entrance, moves downwards to acquire image data, and in the process of moving downwards, the imaging assembly rotates 360 degrees along with the telescopic rod to acquire images.
In the process of acting downwards at the detection equipment, because every inside horizontal plane diameter of pier is not fixed, consequently, the scalable bracing piece of detection equipment can receive the different effort of pier inner wall, the electric cylinder through scalable bracing piece produces the packing force that the size is the same, in order to overcome the effort of the pier inner wall that receives, in order to guarantee that the pulley on the scalable bracing piece of whole equipment can be when laminating with the pier inner wall, do not cause the displacement except the position change of self place telescopic link to the imaging assembly, and then guarantee the definition and the integrity of the pier inner wall image data that the imaging assembly obtained.
Step two: the detection device moves inwards at a preset speed, and the imaging module rotates 360 degrees to acquire image data of the whole interval every time the detection device moves one interval. In order to ensure the precise matching between the imaging assembly and the mechanical structure part and ensure that the overall stability of the equipment meets the requirement, the scanning and image-taking speed needs to be configured according to the actual situation. Meanwhile, the speed of the roller driving the whole device to move downwards needs to be configured according to actual conditions, so that when the device moves towards the interior of the bridge pier, the imaging assembly can acquire complete and clear image data of the inner wall of the bridge pier.
Step three: the detection device transmits the image data to the control center. The imaging assembly of the detection equipment is in communication connection with the control center, and the imaging assembly of the detection equipment sends image data to the control center after acquiring the image data.
Step four: and the control center detects the image through a preset visual detection model after preprocessing the image to determine the defects of the inner wall of the bridge pier.
Step five: and repeating the steps until all the images are acquired by the detection equipment. Because the scanning and image-taking speed and the speed of the roller driving the whole device to move downwards are set in the whole device, the image data of the inner wall of the bridge pier can be completely acquired when the device moves to the bottom or the imaging component acquires the last 360-degree image data after the device moves to the bottom.
According to the pier inner wall defect detection method provided by the embodiment, manual detection is replaced by detection equipment combining an electrical structure and a mechanical structure, so that the labor cost is reduced, and meanwhile, the economic value is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The equipment for detecting the defects of the inner wall of the pier is characterized by comprising a motion control assembly, wherein a telescopic supporting rod and an imaging assembly are arranged outside the motion control assembly, and a roller is arranged at the end part of the telescopic supporting rod; the imaging assembly can rotate 360 degrees around the motion control assembly, and the imaging assembly and the motion control assembly are in communication connection with a control center.
2. The pier inner wall defect detecting device according to claim 1, wherein the imaging assembly further comprises a high-power line laser light source.
3. The bridge pier inner wall defect detection device according to claim 1, wherein the imaging assembly comprises a linear array high-resolution lens.
4. The apparatus for detecting defects in inner walls of piers as claimed in claim 1, wherein said telescopic support rods are internally provided with electric cylinders, and said electric cylinders generate the same pressing force as that applied to said telescopic support rods by the inner walls of piers.
5. The pier inner wall defect detection device of claim 1, wherein the imaging assembly comprises a telescopic rod, and the telescopic rod is connected with the motion control assembly and can rotate 360 degrees around the motion control assembly.
6. The pier inner wall defect detecting device according to claim 5, wherein the telescopic rod is provided at an outer end thereof with a pulley, and the imaging module is fixed at a predetermined distance from the outer end of the telescopic rod.
7. The pier inner wall defect detecting device according to claim 6, wherein the diameter of the pulley at the outer end of the telescopic rod is smaller than that of the telescopic rod.
8. The pier inner wall defect detection device as claimed in claim 7, wherein the pulley is partially disposed outside the telescopic rod and the rest inside the telescopic rod.
9. A pier inner wall defect detection method, which adopts the pier inner wall defect detection equipment as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps:
s1: putting the detection equipment into the detection port;
s2: the detection equipment moves inwards according to a preset speed, and an imaging module obtains image data of the whole interval by rotating 360 degrees in each action interval;
s3: the detection equipment transmits the image data to the control center;
s4: the control center preprocesses the image, then detects the image through a preset visual detection model, and determines the defects of the inner wall of the bridge pier;
s5: steps S1-S4 are repeated until the detection device acquires all images.
10. The method for detecting the defects of the inner wall of the pier, according to claim 9, wherein the distance between the imaging module and the inner wall of the pier is kept constant all the time when the imaging module acquires the image data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110954437.9A CN113686875A (en) | 2021-08-19 | 2021-08-19 | Equipment and method for detecting defects of inner wall of pier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110954437.9A CN113686875A (en) | 2021-08-19 | 2021-08-19 | Equipment and method for detecting defects of inner wall of pier |
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| CN113686875A true CN113686875A (en) | 2021-11-23 |
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| CN202110954437.9A Pending CN113686875A (en) | 2021-08-19 | 2021-08-19 | Equipment and method for detecting defects of inner wall of pier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354625A (en) * | 2021-12-30 | 2022-04-15 | 中铁大桥局集团有限公司 | Prefabricated pier detection device |
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| CN210917491U (en) * | 2019-08-14 | 2020-07-03 | 广州市衡正工程质量检测有限公司 | Bridge pile foundation ultrasonic detection device convenient to use |
| CN212929188U (en) * | 2020-09-03 | 2021-04-09 | 江西恒东管业有限公司 | Nondestructive testing device for inner wall of pipe |
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2021
- 2021-08-19 CN CN202110954437.9A patent/CN113686875A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0854099A (en) * | 1994-08-09 | 1996-02-27 | Nippon Steel Corp | Interior inspection scaffolding for tank |
| CN204662259U (en) * | 2015-01-16 | 2015-09-23 | 中铁二院工程集团有限责任公司 | High pier bridge pier shaft intelligence internal inspection system |
| CN204919324U (en) * | 2015-06-22 | 2015-12-30 | 中铁二院工程集团有限责任公司 | Variable cross section pier inspection device |
| CN205825911U (en) * | 2016-07-11 | 2016-12-21 | 武汉武桥交通装备技术有限公司 | A kind of 3 D laser scanning for being arranged on bridge pier internal cavities checks system |
| CN107795827A (en) * | 2017-10-11 | 2018-03-13 | 孔凡芝 | Tunnel IMAQ regulation platform |
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| CN210720378U (en) * | 2019-07-04 | 2020-06-09 | 王晓蓉 | Novel intelligent special equipment tester |
| CN210917491U (en) * | 2019-08-14 | 2020-07-03 | 广州市衡正工程质量检测有限公司 | Bridge pile foundation ultrasonic detection device convenient to use |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114354625A (en) * | 2021-12-30 | 2022-04-15 | 中铁大桥局集团有限公司 | Prefabricated pier detection device |
| CN114354625B (en) * | 2021-12-30 | 2023-10-20 | 中铁大桥局集团有限公司 | Prefabricated pier detection device |
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