CN107192484B - Device and method for detecting post-tensioned beam prestressed pipeline - Google Patents
Device and method for detecting post-tensioned beam prestressed pipeline Download PDFInfo
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- CN107192484B CN107192484B CN201710291582.7A CN201710291582A CN107192484B CN 107192484 B CN107192484 B CN 107192484B CN 201710291582 A CN201710291582 A CN 201710291582A CN 107192484 B CN107192484 B CN 107192484B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
Abstract
A device and a method for detecting a post-tensioned beam prestressed pipeline. The device comprises a camera, a display, a power supply, a video power line, first to Nth supporting rods, a steel wire hose, a thin hose and a camera bracket; the camera bracket is arranged at the front end of the steel wire hose; the camera is arranged on the camera bracket; the stay bar is in a hollow tubular shape, and the front end of the first stay bar is connected with the rear end of the steel wire hose; one end of the video power line is connected with the camera, the other end of the video power line is connected with the display and the power supply, and a thin hose is sleeved on the outer surface of the video power line positioned outside the first supporting rod; the rear end of the first section of supporting rod is sequentially connected with a second section of supporting rod to an Nth section of supporting rod. The invention has the advantages that: 1. the operation is simple and convenient. 2. The quality defects present in the prestressed pipe can be observed directly. 3. The position of the quality defect can be accurately positioned, and the working efficiency of treating the quality defect of the prestressed pipeline is improved.
Description
Technical Field
the invention belongs to the technical field of quality detection of bridge construction procedures, and particularly relates to a device and a method for detecting a post-tensioned beam prestressed pipeline.
Background
in the production process of the post-tensioned prestressed concrete simply supported beam, if a prestressed pipeline is not straight or foreign matters exist in the prestressed pipeline, the condition that steel strands cannot penetrate normally by the required number or cannot penetrate at all is caused. Traditional processing method has two kinds, one kind is to the condition that can't penetrate at all, visits to unable passing position with a steel strand wires, then extracts the length that the back penetrated with the ruler measurement, measures from the external position that corresponds again on the roof beam body surface, and later trompil is handled, but because the position is not accurate enough, often need open several holes, not only work efficiency is very low, can cause the damage to the roof beam body moreover. Secondly, for the situation that the required number of the steel strands cannot be penetrated normally, because the position which is not straight can not be accurately positioned, a method of 'welding by bundle and pulling in the whole' is generally adopted, but the method can damage the steel strands and increase the frictional resistance of the pipeline. Meanwhile, the specific reasons causing the difficulty in threading the steel strand cannot be accurately determined because the steel strand cannot be directly observed by naked eyes, so that the steel strand cannot be controlled by taking effective measures from the source at the first time.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an apparatus and method for detecting a post-tensioned prestressed pipe.
In order to achieve the above object, the apparatus for detecting a post-tensioned beam pre-stressed pipeline provided by the present invention comprises a camera, a display, a power supply, a video power line, first to nth stay bars, a steel wire hose, a thin hose and a camera bracket; wherein the camera bracket is arranged at the front end of the steel wire hose; the camera is arranged on the camera bracket; the stay bar is in a hollow tubular shape, and the front end of the first stay bar is connected with the rear end of the steel wire hose; one end of a video power line penetrates into the first section of support rod from the circumferential surface of the rear part of the first section of support rod and forwards penetrates through the steel wire hose to be connected with the camera, the other end of the video power line is respectively connected with the display and the power supply, and a thin hose is sleeved on the outer surface of the video power line positioned outside the first section of support rod; the rear end of the first section of the supporting rod is sequentially connected with second to Nth section of the supporting rod according to requirements, and scales of continuous numbers from small to large are marked on the outer surfaces of the first to Nth section of the supporting rod along the length direction.
The device for detecting the post-tensioned beam prestressed pipeline further comprises a lens cover sleeved outside the camera bracket.
the camera is provided with an LED lamp.
The power supply adopts a 12V storage battery.
The length of each section of stay bar is 4 meters, and adjacent stay bars are connected by adopting a pipe fitting connection mode.
The method for detecting the prestressed pipeline by using the device for detecting the post-tensioned beam prestressed pipeline, which is provided by the invention, comprises the following steps in sequence:
1) Firstly, a worker opens a lens cover and switches on a power supply, and if the display can display images and an LED lamp on the camera emits light, the device is normal;
2) After the device is confirmed to be normal, the front end of the first stay bar, the steel wire hose, the camera bracket and the camera are slowly inserted into the prestressed pipeline from the opening of the prestressed pipeline to be detected, the thin hose with the video power line inserted therein is synchronously followed, and a worker can observe the condition in the prestressed pipeline in real time through the image displayed on the display;
3) If the quality defect position is not detected after the first section of supporting rod penetrates into the prestressed pipeline completely, the second section and even the Nth section of supporting rod are connected in sequence at the rear end of the first section of supporting rod through the pipe fitting according to needs, the curve distance from the quality defect position to the mouth of the prestressed pipeline can be directly read according to the scale on the last section of supporting rod after the quality defect position is detected, the quality of the quality defect can be determined according to the image displayed on the display, and the larger the deviation center of the prestressed pipeline is, the worse the straightness of the prestressed pipeline is proved.
The device and the method for detecting the post-tensioned beam prestressed pipeline have the following advantages that:
1. The operation is simple and convenient.
2. The quality defects present in the prestressed pipe can be observed directly.
3. The position of the quality defect can be accurately positioned, and the working efficiency of treating the quality defect of the prestressed pipeline is improved.
drawings
fig. 1 is a front view of an apparatus for detecting a post-tensioned beam pre-stressed pipe.
Detailed Description
the following describes in detail the apparatus and method for detecting a prestressed pipe of a post-tensioned beam according to the present invention with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the device for detecting a post-tensioned beam prestressed pipe provided by the invention comprises a camera 1, a display 2, a power supply 3, a video power line 4, first to nth stay bars 5, a steel wire hose 6, a thin hose 7 and a camera bracket 8; wherein the camera bracket 8 is arranged at the front end of the steel wire hose 6; the camera 1 is arranged on the camera bracket 8; the stay bar 5 is in a hollow tubular shape, and the front end of the first stay bar 5 is connected with the rear end of the steel wire hose 6; one end of a video power line 4 penetrates into the first section of support rod 5 from the rear circumferential surface of the first section of support rod and forwards penetrates through a steel wire hose 6 to be connected with the camera 1, the other end of the video power line is respectively connected with the display 2 and the power supply 3, and a thin hose 7 is sleeved on the outer surface of the video power line 4 positioned outside the first section of support rod 5; second to Nth supporting rods 5 are sequentially connected to the rear end of the first supporting rod 5 as required, and scales of continuous numbers from small to large are marked on the outer surfaces of the first to Nth supporting rods 5 along the length direction.
The device for detecting the post-tensioned beam prestressed pipeline further comprises a lens cover 9 sleeved outside the camera bracket 8 and used for protecting the camera 1.
The camera 1 is provided with the LED lamp, so that clear images can be shot in the prestressed pipeline with dark light.
The power supply 3 adopts a 12V storage battery.
Each section of the stay bar 5 is 4 meters in length, and the adjacent stay bars 5 are connected in a pipe fitting connection mode.
The method for detecting the prestressed pipeline by using the device for detecting the post-tensioned beam prestressed pipeline, which is provided by the invention, comprises the following steps in sequence:
1) firstly, a worker opens the lens cover 9 and switches on the power supply 3, if the display 2 can display images and the LED lamp on the camera 1 emits light, the device is normal;
2) After the device is confirmed to be normal, the front end of the first stay bar 5, the steel wire hose 6, the camera bracket 8 and the camera 1 are slowly inserted into the prestressed pipeline from the opening of the prestressed pipeline to be detected, the thin hose 7 with the video power line 4 penetrating through the interior is synchronously followed, and a worker can observe the condition in the prestressed pipeline in real time through the image displayed on the display 2;
3) If the position of the quality defect is not detected after the first section of support rod 5 is completely penetrated into the prestressed pipeline, the rear end of the first section of support rod 5 is sequentially connected with the second section and the Nth section of support rod 5 by using a pipe fitting according to needs, five sections of support rods 5 are commonly used in the invention, after the position of the quality defect is detected, the curve distance from the position of the quality defect to the mouth of the prestressed pipeline can be directly read according to the scale on the last section of support rod 5, the property of the quality defect can be determined according to the image displayed on the display 2, and the larger the deviation center of the prestressed pipeline is, the worse the straightness of the prestressed pipeline is proved.
Claims (6)
1. A device for surveying post-tensioned beam prestressed pipe, characterized in that: the device comprises a camera (1), a display (2), a power supply (3), a video power line (4), first to Nth supporting rods (5), a steel wire hose (6), a thin hose (7) and a camera bracket (8); wherein the camera bracket (8) is arranged at the front end of the steel wire hose (6); the camera (1) is arranged on the camera bracket (8); the stay bar (5) is in a hollow tubular shape, and the front end of the first stay bar (5) is connected with the rear end of the steel wire hose (6); one end of a video power line (4) penetrates into the first section of support rod (5) from the circumferential surface of the rear part of the first section of support rod and forwards penetrates through a steel wire hose (6) to be connected with the camera (1), the other end of the video power line is respectively connected with the display (2) and the power supply (3), and a thin hose (7) is sleeved on the outer surface of the video power line (4) positioned outside the first section of support rod (5); the rear end of the first section of supporting rod (5) is sequentially connected with a second section of supporting rod or even an Nth section of supporting rod (5) as required, and scales of continuous numbers from small to large are marked on the outer surfaces of the first section of supporting rod to the Nth section of supporting rod (5) along the length direction.
2. The apparatus for detecting a post-tensioned beam pre-stressed pipe as claimed in claim 1, wherein: the device for detecting the post-tensioned beam prestressed pipeline further comprises a lens cover (9) sleeved outside the camera bracket (8).
3. the apparatus for detecting the post-tensioned beam pre-stressed pipe as claimed in claim 2, wherein: the camera (1) is provided with an LED lamp.
4. the apparatus for detecting a post-tensioned beam pre-stressed pipe as claimed in claim 1, wherein: the power supply (3) adopts a 12V storage battery.
5. the apparatus for detecting a post-tensioned beam pre-stressed pipe as claimed in claim 1, wherein: the length of each section of stay bar (5) is 4 meters, and adjacent stay bars (5) are connected by adopting a pipe fitting connection mode.
6. A method for detecting a prestressed pipe using the apparatus for detecting a post-tensioned beam prestressed pipe according to claim 3, wherein: the method comprises the following steps which are carried out in sequence:
1) Firstly, a worker opens a lens cover (9) and switches on a power supply (3), if the display (2) can display images and an LED lamp on the camera (1) emits light, the device is normal;
2) After the device is confirmed to be normal, the front end of the first section of stay bar (5), the steel wire hose (6), the camera bracket (8) and the camera (1) are slowly inserted into the prestressed pipeline from the prestressed pipeline opening to be detected, the thin hose (7) with the video power line (4) inserted therein is synchronously followed, and a worker can observe the condition in the prestressed pipeline in real time through the image displayed on the display (2);
3) If the quality defect position is not detected after the first section of support rod (5) penetrates into the prestressed pipeline completely, the second section and even the Nth section of support rod (5) are connected in sequence by using a pipe fitting at the rear end of the first section of support rod (5) according to needs, the curve distance from the quality defect position to the mouth of the prestressed pipeline can be directly read according to the scale on the last section of support rod (5) after the quality defect position is detected, the quality defect property can be determined according to the image displayed on the display (2), and the larger the deviation center of the prestressed pipeline is, the worse the straightness of the prestressed pipeline is proved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291582.7A CN107192484B (en) | 2017-04-28 | 2017-04-28 | Device and method for detecting post-tensioned beam prestressed pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710291582.7A CN107192484B (en) | 2017-04-28 | 2017-04-28 | Device and method for detecting post-tensioned beam prestressed pipeline |
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| Publication Number | Publication Date |
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| CN107192484A CN107192484A (en) | 2017-09-22 |
| CN107192484B true CN107192484B (en) | 2019-12-13 |
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| CN201710291582.7A Active CN107192484B (en) | 2017-04-28 | 2017-04-28 | Device and method for detecting post-tensioned beam prestressed pipeline |
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| CN114046923B (en) * | 2021-09-28 | 2024-04-19 | 中交四航局第四工程有限公司 | Nondestructive testing method for post-tensioned prestressing corrugated pipe |
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| US6655860B2 (en) * | 2000-06-08 | 2003-12-02 | Fuji Photo Film Co., Ltd. | Photosensitive material processing apparatus |
| CN101650318A (en) * | 2009-09-10 | 2010-02-17 | 三峡大学 | Nondestructive examination device and method of crack defects of inner surface of underground foundation embedded section of electric pole |
| CN201503403U (en) * | 2009-09-10 | 2010-06-09 | 三峡大学 | Nondestructive detection device of internal surface crack defects of deeply embedded section of underground foundation of pole |
| CN102645244A (en) * | 2012-04-17 | 2012-08-22 | 中铁十三局集团第一工程有限公司 | Prestressed duct detector |
| CN202661100U (en) * | 2012-04-17 | 2013-01-09 | 中铁十三局集团第一工程有限公司 | Prestressed duct detector |
| CN204924961U (en) * | 2015-07-10 | 2015-12-30 | 云南省公路科学技术研究院 | A device that is used for peeping in bridge beam slab prestressed duct detection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822049B (en) * | 2015-04-24 | 2018-01-26 | 合肥工业大学 | A kind of simple portable rock masses fracturing evolution endoscope and image processing device |
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- 2017-04-28 CN CN201710291582.7A patent/CN107192484B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6655860B2 (en) * | 2000-06-08 | 2003-12-02 | Fuji Photo Film Co., Ltd. | Photosensitive material processing apparatus |
| CN101650318A (en) * | 2009-09-10 | 2010-02-17 | 三峡大学 | Nondestructive examination device and method of crack defects of inner surface of underground foundation embedded section of electric pole |
| CN201503403U (en) * | 2009-09-10 | 2010-06-09 | 三峡大学 | Nondestructive detection device of internal surface crack defects of deeply embedded section of underground foundation of pole |
| CN102645244A (en) * | 2012-04-17 | 2012-08-22 | 中铁十三局集团第一工程有限公司 | Prestressed duct detector |
| CN202661100U (en) * | 2012-04-17 | 2013-01-09 | 中铁十三局集团第一工程有限公司 | Prestressed duct detector |
| CN204924961U (en) * | 2015-07-10 | 2015-12-30 | 云南省公路科学技术研究院 | A device that is used for peeping in bridge beam slab prestressed duct detection |
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Inventor after: Yang Xuekun Inventor after: Yan Zhanshui Inventor after: Li Hongqi Inventor after: Credit Preservation Inventor after: Hao Wei Inventor after: Liu Dingding Inventor after: Li Weiqiang Inventor after: Wang Zhe Inventor before: Yan Zhanshui Inventor before: Li Hongqi Inventor before: Credit Preservation Inventor before: Hao Wei Inventor before: Liu Dingding Inventor before: Li Weiqiang Inventor before: Wang Zhe |
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