CN105240644A - Pipeline crack repairing device and method - Google Patents
Pipeline crack repairing device and method Download PDFInfo
- Publication number
- CN105240644A CN105240644A CN201510465095.9A CN201510465095A CN105240644A CN 105240644 A CN105240644 A CN 105240644A CN 201510465095 A CN201510465095 A CN 201510465095A CN 105240644 A CN105240644 A CN 105240644A
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- China
- Prior art keywords
- repairing device
- air bag
- carrier loader
- expansion circle
- expansion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/10—Treating the inside of pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Sewage (AREA)
Abstract
The invention discloses a pipeline crack repairing device and method. According to the pipeline crack repairing device and method, the position of a pipeline crack is located by arranging a camera-carrying cart, and a sealing ring is tightly attached to the position of the pipeline crack through an air bag repairing device and an expansion ring; control over the camera-carrying cart and the air bag repairing device can be achieved by repair personnel simply by placing the camera-carrying cart, the air bag repairing device, the expansion ring and the sealing ring in an inspection well and operating a multifunctional cart on the ground; and after positioning of the sealing ring is completed, the sealing ring is tightly pressed and fixed to the inner wall of a pipeline through the expansion ring and a self-locking piece in the expansion ring instead of adhering to the inner wall of the pipeline by pouring adhesives used for adhesion into the pipeline. In this way, the pipeline crack repairing device has the advantages that repairing is convenient, and the repairing effect is good.
Description
Technical field
The present invention relates to a kind of pipeline trenchless repairing method, especially a kind of pipe crack repairing device and restorative procedure.
Background technique
Along with the fast development of China's economy, the total length of existing various pipes is very large, because the much under ground piping laying time is longer, and construction process at that time and pipe material poor, in running, these pipelines are crossed load, yielding of foundation or personal factor etc. due to burn into and are caused local damage throughout the year, there is the accidents such as road surface subsides, bring huge economic loss.Pipe repairing method conventional is at present liner repairing method, and the main technique technology of no-dig technique pipeline local route repair has Stainless Sheet Steel to weld liner and pipeline spraying liner.Stainless Sheet Steel welding Internal Lining Method feature: Stainless Sheet Steel is as supply pipe liner repair materials, it is corrosion-resistant, non-scaling, frictional resistance are little, nontoxic pollution-free, buried working life is longer than steel pipe and cast iron tube, but complicated construction technique, engineering cost is high, restrict by construction site, liner installs difficulty, needs hydrogen arc to weld, as air draft not in time in work progress, easily cause workmen to suffocate, there is certain safety in production hidden danger.Pipeline spraying Internal Lining Method feature: this method is cheap, corrosion resistance is strong, technique is simple, but requires high to the turbidity test of inner-walls of duct, if internal surface cleaning does not reach construction requirement or outside Groundwater infiltration pipeline can cause lining spalling; Cannot spray if hydraulic pressure is excessive in addition, in pipe, coating lining majority is thinner, limited etc. from voltage endurance capability.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of repairing effect good, and the pipe crack repairing device and restorative procedure that construction worker need not be arranged to slip in pipeline carry out keeping in repair.
Technological scheme provided by the invention is as follows: a kind of pipe crack repairing device, and it comprises:
The camera carrier loader that can walk in the duct, described camera carrier loader is provided with camera;
Inflatable and air bag repairing device, described air bag repairing device is connected by connecting tube and is arranged on the front of described camera carrier loader;
Multi-functional control car, described multi-functional control car is connected with described camera carrier loader with air supply pipe by cable, and described multi-functional control car can control the walking of described camera carrier loader and control the inflation action of described air bag repairing device;
Expansion circle, described intervolving of expansion circle is held in can be movable relatively setting, and described expansion snare is located on described air bag repairing device, and described air bag repairing device can drive the internal diameter expansion of described expansion circle in gas replenishment process;
Elastic seal ring, described seal ring is set on the outer wall of described expansion circle, and described seal ring can be pressed close to and contact inner-walls of duct under the drive of described expansion circle internal diameter expansion;
Self-locking body, described self-locking body is arranged on the circumferential inner wall of described expansion circle, and described self-locking body can form self-locking when described expansion circle starts to bounce back thus make the end that intervolves of described expansion circle stop relative movement.
In the preferred embodiment, generator, camera master control and air compressor is included in described multi-functional control car.
In the preferred embodiment, described self-locking body is set to two, described two self-locking bodies are separately positioned on described two of expanding circle and intervolve end, on the circumferential inner wall of described expansion circle, the position of corresponding described self-locking body is provided with slide rail, and described self-locking body slides on the inwall of described expansion circle along described slide rail in the process of described expansion circle internal diameter expansion.
In the preferred embodiment, described self-locking body comprises slide block and is arranged on three gears in described slide block.
In the preferred embodiment, the external tooth of the corresponding described gear of the track of described slide rail is set to flexuose.
In the preferred embodiment, described expansion circle is rolled by stainless steel sheets and forms, and two of described expansion circle intervolve end in can be movable relatively setting.
In the preferred embodiment, can be set to can the ratchet member of lock motion for described self-locking body.
The present invention also provides a kind of pipe crack restorative procedure, and it comprises the following steps:
1) on the ground seal ring is arranged on expansion circle;
2) air bag repairing device, expansion circle and camera carrier loader that camera is housed are put into inspection shaft;
3) by connecting tube, camera carrier loader is connected with air bag repairing device, and expansion circle is arranged on air bag repairing device;
4) air supply pipe of multi-functional control car, cable are connected with camera carrier loader;
5) controlled the walking of camera carrier loader by multi-functional control car, promote air bag repairing device by connecting tube in the process of camera carrier loader walking and move ahead in pipeline;
6) passed back the image in pipeline by the camera on camera carrier loader, when air bag repairing device moves to pipe crack position, control camera carrier loader and air bag repairing device stop moving ahead;
7) control air bag repairing device to inflate, the internal diameter expansion of expansion circle is driven in air bag repairing device gas replenishment process, thus seal ring is pressed close to and contacts inner-walls of duct crack location, when inner-walls of duct is close to by seal ring, discharges air pressure after keeping air pressure certain hour and air bag is bounced back;
8) expansion circle forms self-locking by self-locking body under air bag retraction trend, makes the internal diameter of expansion circle be fixed on special position and does not bounce back, thus make the seal ring on expansion circle be pressed abd fixed on the crack place of inner-walls of duct;
9) from inspection shaft, withdraw from camera carrier loader and air bag repairing device, expansion circle and seal ring to be stayed on inner-walls of duct thus completed pipeline rehabilitation work.
Step 3) in connecting tube be used for the airbag aeration in air bag repairing device.
Step 4) in multi-functional control car be used for powering to camera carrier loader, viewing camera carrier loader is passed image back and controls moving ahead and stopping of camera carrier loader, and for the inflation that controls air bag repairing device and the action of release air pressure.
The beneficial effect that the present invention produces is: carry out targeted duct crack location by arranging camera carrier loader, and by air bag repairing device and expansion circle, seal ring is close to pipe crack position, as long as reparation personnel are by camera carrier loader, air bag repairing device, expansion circle, inspection shaft put into by seal ring, and time terrestrial operation multi-functional control car just can realize the control to camera carrier loader and air bag repairing device, and not needing to pour into tackiness agent bonding after seal ring has been located makes seal ring be bonded on inner-walls of duct, but by the self-locking body in expansion circle and expansion circle, seal ring is pressed abd fixed on inner-walls of duct.Therefore this pipe crack repairing device has and repairs convenient and that repairing effect is good advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of pipe crack repairing device of the present invention;
Fig. 2 is for the pipe crack repairing device expansion circle shown in Fig. 1 is along the generalized section of A-A line;
Fig. 3 is for the self-locking body shown in Fig. 2 and expand the structural representation enclosing inwall adaptation;
Fig. 4 is after reparation completes, the structural representation that expansion circle, seal ring and institute's pipe-repairing are fitted.
Embodiment
See Fig. 1, pipe crack repairing device, the camera carrier loader 40 comprise multi-functional control car 10, being connected by cable 30 with air supply pipe 20 with multi-functional control car 10, camera carrier loader 40 is provided with camera 41, the front of camera carrier loader 40 is connected with air bag repairing device 60 by connecting tube 50, air bag repairing device 60 is arranged with expansion circle 70, expansion circle 70 is arranged with seal ring 80.
See Fig. 1, Fig. 2 and Fig. 3, expansion circle 70 is rolled by stainless steel sheets and forms, two ends of expansion circle 70 are in can relative movement arrange, expansion circle 70 is provided with two self-locking bodies 71 on the inwall of two ends, on the circumferential inner wall of expansion circle 70, the position of corresponding self-locking body 71 is provided with slide rail 72, and self-locking body 71 slides on the inwall of expansion circle 70 along slide rail 72 in the process of expansion circle 70 internal diameter expansion.Three gears 712 that self-locking body 71 comprises slide block 711 and is arranged in slide block 711, when expansion circle 70 is under the trend of retraction, three gears 712 make slide block 711 stop sliding on slide rail 72 thus the caliber of expansion circle 70 are fixed on special position not bounce back by the snap-in of respective external tooth.
In repair process, first on the ground seal ring 80 is arranged on expansion circle 70, then air bag repairing device 60 and the camera carrier loader 40 that camera 41 is housed are put into inspection shaft 93, expansion circle 70 is arranged on air bag repairing device 60, and by connecting tube 50, camera carrier loader 40 is connected with air bag repairing device 60, by the air supply pipe 20 of ground multi-functional control car 10, cable 30 is connected with camera carrier loader 40, the walking of camera carrier loader 40 is controlled by multi-functional control car 10, promote air bag repairing device 60 by connecting tube 50 in the process that camera carrier loader 40 is walked to move ahead in pipeline 90, after camera 41 on camera carrier loader 40 passes the image in pipeline back, air bag repairing device 60 is made to move to pipeline 90 crack location 91, then camera carrier loader 40 and air bag repairing device 60 are stopped, and control air bag repairing device 60 and inflate, the internal diameter expansion of expansion circle 70 is driven in air bag repairing device 60 gas replenishment process, thus make the seal ring 80 on expansion circle 70 press close to and contact inner-walls of duct crack location 91, when pipeline 90 inwall is close to by seal ring 80, discharging air pressure after keeping air pressure certain hour makes air bag bounce back, expansion circle 70 forms self-locking by self-locking body 71 under air bag retraction trend, make the internal diameter of expansion circle 70 be fixed on special position not bounce back, thus make the seal ring 80 on expansion circle 70 be close to the crack place 91 being fixed on pipeline 90 inwall, from inspection shaft 93, finally withdraw from camera carrier loader 40 and air bag repairing device 60, as shown in Figure 4, expansion circle 70 and seal ring 80 to be stayed on pipeline 90 inwall thus to complete pipeline rehabilitation work.
In other embodiments, also can be set to can the ratchet member of lock motion for self-locking body 70.
In sum, this pipe crack repairing device carrys out targeted duct crack location 91 by arranging camera carrier loader 40, and by air bag repairing device 60 and expansion circle 70, seal ring 80 is close to pipe crack position 91, as long as reparation personnel are by camera carrier loader 40, air bag repairing device 60, inspection shaft 93 put into by expansion circle 70 and seal ring 80, and time terrestrial operation multi-functional control car 10 just can realize the control to camera carrier loader 40 and air bag repairing device 60, and not needing to pour into tackiness agent bonding after seal ring 80 has been located makes seal ring 80 be bonded on pipeline 90 inwall, but by the self-locking body 71 in expansion circle 70 and expansion circle 70, seal ring 80 is pressed abd fixed on pipeline 90 inwall.Therefore this pipe crack repairing device has and repairs convenient and that repairing effect is good advantage.
Above are only a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.
Claims (10)
1. a pipe crack repairing device, is characterized in that: it comprises:
The camera carrier loader that can walk in the duct, described camera carrier loader is provided with camera;
Inflatable air bag repairing device, described air bag repairing device connects the front being arranged on described camera carrier loader by connecting tube;
Multi-functional control car, described multi-functional control car is connected with described camera carrier loader with air supply pipe by cable, and described multi-functional control car can control the walking of described camera carrier loader and control the inflation action of described air bag repairing device;
Expansion circle, described intervolving of expansion circle is held in can be movable relatively setting, and described expansion snare is located on described air bag repairing device, and described air bag repairing device can drive the internal diameter expansion of described expansion circle in gas replenishment process;
Elastic seal ring, described seal ring is set on the outer wall of described expansion circle, and described seal ring can be pressed close to and contact inner-walls of duct under the drive of described expansion circle internal diameter expansion;
Self-locking body, described self-locking body is arranged on the circumferential inner wall of described expansion circle, and described self-locking body can form self-locking when described expansion circle starts to bounce back thus make the end that intervolves of described expansion circle stop relative movement.
2. pipe crack repairing device according to claim 1, is characterized in that: include generator, camera master control and air compressor in described multi-functional control car.
3. pipe crack repairing device according to claim 1, it is characterized in that: described self-locking body is set to two, described two self-locking bodies are separately positioned on described two of expanding circle and intervolve end, on the circumferential inner wall of described expansion circle, the position of corresponding described self-locking body is provided with slide rail, and described self-locking body slides on the inwall of described expansion circle along described slide rail in the process of described expansion circle internal diameter expansion.
4. a kind of pipe crack repairing device according to claim 3, is characterized in that: described self-locking body comprises slide block and is arranged on the gear in described slide block.
5. a kind of pipe crack repairing device according to claim 3 or 4, is characterized in that: the external tooth of the corresponding described gear of track of described slide rail is set to flexuose.
6. a kind of pipe crack repairing device according to claim 1, is characterized in that: described expansion circle is rolled by stainless steel sheets and forms, and two of described expansion circle intervolve end in can be movable relatively setting.
7. a kind of pipe crack repairing device according to claim 1, is characterized in that: described self-locking body can be set to can the ratchet member of lock motion.
8. pipe crack restorative procedure according to claim 1, its feature comprises the following steps:
1) on the ground seal ring is arranged on expansion circle;
2) air bag repairing device, expansion circle and camera carrier loader that camera is housed are put into inspection shaft;
3) by connecting tube, camera carrier loader is connected with air bag repairing device, and expansion circle is arranged on air bag repairing device;
4) air supply pipe of multi-functional control car, cable are connected with camera carrier loader;
5) controlled the walking of camera carrier loader by multi-functional control car, promote air bag repairing device by connecting tube in the process of camera carrier loader walking and move ahead in pipeline;
6) passed back the image in pipeline by the camera on camera carrier loader, when air bag repairing device moves to pipe crack position, control camera carrier loader and air bag repairing device stop moving ahead;
7) control air bag repairing device to inflate, the internal diameter expansion of expansion circle is driven in air bag repairing device gas replenishment process, thus seal ring is pressed close to and contacts inner-walls of duct crack location, when inner-walls of duct is close to by seal ring, discharges air pressure after keeping air pressure certain hour and air bag is bounced back;
8) expansion circle forms self-locking by self-locking body under air bag retraction trend, makes the internal diameter of expansion circle be fixed on special position and does not bounce back, thus the seal ring on expansion circle is close to be fixed on the crack place of inner-walls of duct;
9) from inspection shaft, withdraw from camera carrier loader and air bag repairing device, expansion circle and seal ring to be stayed on inner-walls of duct thus completed pipeline rehabilitation work.
9. a kind of pipe crack restorative procedure according to claim 8, is characterized in that: step 3) in connecting tube be used for the airbag aeration in air bag repairing device.
10. a kind of pipe crack restorative procedure according to claim 8, it is characterized in that: step 4) in multi-functional control car be used for power and data transmission to camera carrier loader, viewing camera carrier loader is passed image back and controls moving ahead and stopping of camera carrier loader, and for the inflation that controls air bag repairing device and the action of release air pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510465095.9A CN105240644B (en) | 2015-07-31 | 2015-07-31 | A kind of pipe crack prosthetic device and restorative procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510465095.9A CN105240644B (en) | 2015-07-31 | 2015-07-31 | A kind of pipe crack prosthetic device and restorative procedure |
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| Publication Number | Publication Date |
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| CN105240644A true CN105240644A (en) | 2016-01-13 |
| CN105240644B CN105240644B (en) | 2018-01-02 |
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| CN201510465095.9A Active CN105240644B (en) | 2015-07-31 | 2015-07-31 | A kind of pipe crack prosthetic device and restorative procedure |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764233A (en) * | 2016-12-22 | 2017-05-31 | 温州煜阳市政园林工程有限公司 | Municipal sewer pipe prosthetic device and its construction method |
| CN106870871A (en) * | 2017-04-20 | 2017-06-20 | 温州市龙湾区市政工程公司 | A kind of pipeline non-excavation rehabilitation crawl device |
| CN107101068A (en) * | 2017-06-07 | 2017-08-29 | 中国核工业第二二建设有限公司 | Infiltration plugging device and its construction method in a kind of pipeline |
| CN108087660A (en) * | 2017-12-05 | 2018-05-29 | 浙江景迈环境工程有限公司 | The localization method of underground piping non-excavation rehabilitation defect point |
| CN109826200A (en) * | 2019-01-23 | 2019-05-31 | 广东建基基础工程有限公司 | A kind of pattern foundation pit supporting structure repairs structure and its construction method |
| CN110161047A (en) * | 2019-06-14 | 2019-08-23 | 汕头大学 | A kind of road and bridge Crack Detection and repair integrated robot |
| CN110594521A (en) * | 2019-09-24 | 2019-12-20 | 深圳市海腾建设工程有限公司 | Pipeline robot, repairing method of drainage pipeline and storage medium |
| CN111022819A (en) * | 2019-12-17 | 2020-04-17 | 鼎尚（大连）科技发展有限公司 | Method and device for connecting fracture after repairing lining of steel pipeline |
| CN111779919A (en) * | 2020-06-30 | 2020-10-16 | 厦门安越非开挖工程技术股份有限公司 | Grouting water stopping method |
| CN111779896A (en) * | 2020-06-19 | 2020-10-16 | 中建四局安装工程有限公司 | Prefabricated installation process of wall-through air pipe |
| CN112856246A (en) * | 2020-12-21 | 2021-05-28 | 温州佳宝电镀设备有限公司 | Method for searching pipeline water leakage point |
| CN113585424A (en) * | 2021-08-11 | 2021-11-02 | 广东德泽建设工程有限公司 | Non-large excavation point-like replacement minimally-invasive repair construction method for municipal rainwater and sewage pipeline |
| CN114323969A (en) * | 2021-11-22 | 2022-04-12 | 中国地质大学（武汉） | External pressure bearing performance testing method for liner repair structure of rigid pipeline |
| CN115111459A (en) * | 2022-07-02 | 2022-09-27 | 长江生态环保集团有限公司 | Protection device and method suitable for drainage pipeline plugging air bag |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764233B (en) * | 2016-12-22 | 2018-10-09 | 温州煜阳市政园林工程有限公司 | Municipal sewer pipe prosthetic device and its construction method |
| CN106764233A (en) * | 2016-12-22 | 2017-05-31 | 温州煜阳市政园林工程有限公司 | Municipal sewer pipe prosthetic device and its construction method |
| CN106870871A (en) * | 2017-04-20 | 2017-06-20 | 温州市龙湾区市政工程公司 | A kind of pipeline non-excavation rehabilitation crawl device |
| CN107101068A (en) * | 2017-06-07 | 2017-08-29 | 中国核工业第二二建设有限公司 | Infiltration plugging device and its construction method in a kind of pipeline |
| CN108087660B (en) * | 2017-12-05 | 2019-09-10 | 浙江景迈环境工程有限公司 | The localization method of underground piping non-excavation rehabilitation defect point |
| CN108087660A (en) * | 2017-12-05 | 2018-05-29 | 浙江景迈环境工程有限公司 | The localization method of underground piping non-excavation rehabilitation defect point |
| CN109826200B (en) * | 2019-01-23 | 2020-09-29 | 广东建基基础工程有限公司 | Foundation pit supporting and repairing structure and construction method thereof |
| CN109826200A (en) * | 2019-01-23 | 2019-05-31 | 广东建基基础工程有限公司 | A kind of pattern foundation pit supporting structure repairs structure and its construction method |
| CN110161047A (en) * | 2019-06-14 | 2019-08-23 | 汕头大学 | A kind of road and bridge Crack Detection and repair integrated robot |
| CN110594521A (en) * | 2019-09-24 | 2019-12-20 | 深圳市海腾建设工程有限公司 | Pipeline robot, repairing method of drainage pipeline and storage medium |
| CN110594521B (en) * | 2019-09-24 | 2021-06-29 | 海腾创建(深圳)集团有限公司 | Pipeline robot, repairing method of drainage pipeline and storage medium |
| CN111022819B (en) * | 2019-12-17 | 2021-06-08 | 鼎尚（大连）科技发展有限公司 | Method and device for connecting fracture after repairing lining of steel pipeline |
| CN111022819A (en) * | 2019-12-17 | 2020-04-17 | 鼎尚（大连）科技发展有限公司 | Method and device for connecting fracture after repairing lining of steel pipeline |
| CN111779896B (en) * | 2020-06-19 | 2021-08-27 | 中建四局安装工程有限公司 | Prefabricated installation process of wall-through air pipe |
| CN111779896A (en) * | 2020-06-19 | 2020-10-16 | 中建四局安装工程有限公司 | Prefabricated installation process of wall-through air pipe |
| CN111779919A (en) * | 2020-06-30 | 2020-10-16 | 厦门安越非开挖工程技术股份有限公司 | Grouting water stopping method |
| CN112856246A (en) * | 2020-12-21 | 2021-05-28 | 温州佳宝电镀设备有限公司 | Method for searching pipeline water leakage point |
| CN113585424A (en) * | 2021-08-11 | 2021-11-02 | 广东德泽建设工程有限公司 | Non-large excavation point-like replacement minimally-invasive repair construction method for municipal rainwater and sewage pipeline |
| CN113585424B (en) * | 2021-08-11 | 2022-12-23 | 广东德泽建设工程有限公司 | Non-large excavation point-like replacement minimally-invasive repair construction method for municipal rainwater and sewage pipeline |
| CN114323969A (en) * | 2021-11-22 | 2022-04-12 | 中国地质大学（武汉） | External pressure bearing performance testing method for liner repair structure of rigid pipeline |
| CN115111459A (en) * | 2022-07-02 | 2022-09-27 | 长江生态环保集团有限公司 | Protection device and method suitable for drainage pipeline plugging air bag |
| CN115111459B (en) * | 2022-07-02 | 2023-05-02 | 长江生态环保集团有限公司 | Protection device and method suitable for blocking air bags of drainage pipelines |
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| CN105240644B (en) | 2018-01-02 |
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