CN111216849A - Bridge underwater detection ship - Google Patents
Bridge underwater detection ship Download PDFInfo
- Publication number
- CN111216849A CN111216849A CN202010178366.3A CN202010178366A CN111216849A CN 111216849 A CN111216849 A CN 111216849A CN 202010178366 A CN202010178366 A CN 202010178366A CN 111216849 A CN111216849 A CN 111216849A
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- ship
- hull
- fixed
- underwater
- bridge
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- 238000001514 detection method Methods 0.000 title claims abstract description 73
- 239000000725 suspension Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 238000007689 inspection Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 201000010099 disease Diseases 0.000 description 7
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 238000005188 flotation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B2017/0054—Rests or supports for movable ship-borne equipment
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The embodiment of the invention discloses an underwater bridge detection ship, which is characterized by comprising the following components: the device comprises a hull structure, a suspension structure, a driving structure, a fixing structure and a detection device; wherein, two groups of suspension structures are symmetrically arranged at the lower part of the hull structure; the driving structure is fixed on the ship body structure to drive the ship body structure to move; the fixed structure is fixed on the ship hull structure to fix the ship hull structure when the ship hull structure stops running; the detection device at least comprises an underwater camera, a single/multi-beam sensor and sonar equipment. The invention can conveniently, quickly and efficiently detect the bridge underwater structure and can ensure the safety of detection work.
Description
Technical Field
The invention relates to the technical field of bridge underwater detection, in particular to a bridge underwater detection ship.
Background
The bridge pier foundation is the main bearing structure of the bridge, and the working state of the bridge pier foundation directly influences the bearing capacity of the bridge. The bridge abutment foundation is mostly placed in water, is in complex hydrogeology for a long time and is washed and eroded by running water, so that the diseases of the bridge abutment foundation are increasingly and seriously increased. The disease positions are underwater, and are difficult to find in routine inspection, so that the disease positions are a great potential safety hazard of the bridge structure. Therefore, the condition of the bridge underwater component is comprehensively and systematically known and mastered, and scientific and reasonable technical data and decision basis are provided for maintenance of the bridge, so that the safety of the bridge structure is ensured, and the detection of the bridge underwater structure is very important.
At present, few cases are detected underwater aiming at a bridge, the technical scheme is not prepared sufficiently, the traditional underwater detection is limited to inland bridges in many places, the traditional mode is that a diver is used for carrying out underwater touch detection and visual detection, and underwater photographing and positioning are carried out on defects such as concrete falling, honeycomb, underwater structure cracks, exposed ribs, holes, mechanical damage and the like discovered during operation. The traditional means for measuring the height of the cross section of the river bed is to use a side depth rod to measure the water depth of a specific point, so that measured data draws a cross section diagram of the river bed, the scouring or silting condition of the cross section of the river bed is obtained, the actual pile foundation embedding depth is obtained, and the safety condition of the pile foundation is further judged.
However, because part of the water level is deep, the river is turbulent, and the underwater condition is complex, certain hidden trouble exists in safety control. Moreover, the detection means is traditional, so the detection efficiency is low.
Therefore, how to design a bridge underwater structure detection device, the bridge underwater structure detection device can be used for conveniently, quickly and efficiently detecting the bridge underwater structure, and the technical problem which needs to be solved urgently is to ensure the safety of detection work.
Disclosure of Invention
Based on this, for solving the not enough that exists at prior art, specially proposed a bridge and examined ship under water.
A bridge underwater detection ship is characterized by comprising: the device comprises a hull structure, a suspension structure, a driving structure, a fixing structure and a detection device; wherein, two groups of suspension structures are symmetrically arranged at the lower part of the hull structure; the driving structure is fixed on the ship body structure to drive the ship body structure to move; the fixed structure is fixed on the ship hull structure to fix the ship hull structure when the ship hull structure stops running; the detection device at least comprises an underwater camera, a single/multi-beam sensor and sonar equipment.
Optionally, in one of the embodiments, the hull structure comprises a hull frame, a deck and a guardrail; wherein the deck is fixed on the hull frame to form a hull basic structure, and the guard rails are fixed on both sides of the hull basic structure.
Alternatively, in one embodiment, the hull frame is constructed from a plurality of industrial aluminum type bars that overlap each other.
Optionally, in one embodiment, the floating structure includes a pontoon and a plurality of fixed diagonal braces, wherein the pontoon is fixed on the hull frame by pins and is fixed by a plurality of fixed diagonal braces.
Optionally, in one of the embodiments, the drive structure comprises a propeller.
Optionally, in one embodiment, the fixing structure includes an integrated steel plate, a sleeve and a fixing rod, a through hole for inserting the sleeve is formed in the central position of the integrated steel plate, and the sleeve is inserted into the through hole and is welded and fixed with the integrated steel plate; the fixing rod is inserted into the sleeve.
Optionally, in one embodiment, the sleeve is reinforced by a fixing bracket formed by a plurality of supporting angle steels.
Optionally, in one embodiment, the fixing rod is a cylinder including a plurality of threaded joints, so that the length of the fixing rod can be adjusted by mutual splicing.
Optionally, in one embodiment, the fixing structure includes a fixing chain structure for assisting in fixing the hull structure around a pier.
Optionally, in one embodiment, the bridge underwater detection vessel further has a steel rod structure connected to the sleeve to form a double-pipe sleeve structure with the fixing rod, and the steel rod structure is provided with an underwater camera.
The embodiment of the invention has the following beneficial effects:
the invention provides a portable assembled type bridge underwater detection ship integrating an underwater camera, a single/multi-beam sensor and two-dimensional/three-dimensional sonar equipment, which can realize that detection personnel can detect bridge underwater structures on the detection ship by operating the detection equipment on the detection ship. Specifically, firstly, a detection person operates detection equipment on a detection ship to detect the bridge underwater structure, so that the detection operation of the detection person in person diving is avoided, the bridge underwater structure can be conveniently and quickly detected, the safety of detection work can be ensured, the safety of lives and properties of the detection person is ensured, the detection efficiency is greatly improved, and the economic cost is reduced; secondly, the fixing rod of the bridge underwater detection ship is inserted into the water bottom, and a chain fixing structure for the detection ship, such as a rope or an iron chain, can be fixed beside a pier which is detected nearby, so that the detection ship can stably and firmly stay on the water surface, and the safety of the invention is further improved; thirdly, the detector detects the bridge underwater structure by controlling an underwater camera or sonar equipment arranged on the fixed rod, and records disease data in real time, so that the accuracy of the detected data is improved, and the detection efficiency is greatly improved; finally, the water depth is measured by controlling the single/multi-beam sensor to obtain the height of the cross section of the river bed, so that heavy and tedious measuring means are avoided, and the measuring work is more efficient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a schematic top view of the structure of an underwater bridge inspection ship in one embodiment;
FIG. 2 is a schematic structural front view of the bridge underwater detection vessel in one embodiment;
FIG. 3 is a schematic rear view of the structure of the bridge underwater detection vessel in one embodiment;
FIG. 4 is a schematic left view of the structure of the bridge underwater detection ship in one embodiment;
FIG. 5 is a schematic top view of an embodiment of an underwater bridge inspection ship during inspection;
FIG. 6 is a schematic structural view of the integrated steel plate according to an embodiment;
FIG. 7 is a schematic top view of the bridge underwater detection vessel in an operating state when the water depth is below 5m in one embodiment;
FIG. 8 is a left side view of the underwater bridge inspection ship in an operating state when the water depth is greater than 5m in one embodiment;
in the figure: 1. the flotation pontoon, 2, industry aluminium type pole, 3, guardrail, 4, deck, 5, integrated steel sheet, 6, dead lever, 7, cylindrical stainless steel pole, 8, hull fixed capstan winch, 9, single/multi-beam sensor, 10, screw, 11, sonar equipment, 12, camera under water, 13, double-pipe sleeve, 14, fixed bracing, 15, sleeve, 16, support angle steel, 17, buffer bracket, 18, safety rope, 19, horizontal plane, 20, riverbed section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application. The first and second elements are both elements, but they are not the same element.
In this embodiment, a bridge underwater detection ship is especially provided, which can integrate an underwater camera, a single/multi-beam sensor, and a two-dimensional/three-dimensional/sonar device into a portable assembled bridge underwater detection ship to realize in-place detection of a bridge underwater abutment foundation and measurement of a riverbed section height; as shown in fig. 1 to 6, it comprises: the device comprises a hull structure, a suspension structure, a driving structure, a fixing structure and a detection device; wherein, two groups of suspension structures are symmetrically arranged at the lower part of the hull structure; the driving structure is fixed at the stern of the ship body structure (namely the rear part of the ship body structure) to drive the ship body structure to travel; the fixed structure is fixed on the ship hull structure to fix the ship hull structure when the ship hull structure stops running; the detection means comprise at least an underwater camera 12, a single/multi-beam sensor 9 and sonar equipment 11.
In some specific embodiments, the hull structure comprises a hull frame, a deck, and a guardrail 3; wherein the deck is fixed on the hull frame to form a hull basic structure, and the guard rails 3 are fixed on both sides of the hull basic structure; the hull frame is formed by mutually overlapping a plurality of industrial aluminum type rods 2, and the groove width of each industrial aluminum type rod 2 is selected according to the use requirement; the suspension structure enables the hull structure to suspend on a horizontal surface 19, and comprises a buoy 1 and a plurality of fixed braces 13, wherein the buoy 1 is fixed on the hull frame by pins and is fixed by the plurality of fixed braces 13. In some more specific embodiments, the industrial aluminum type bars 2 are connected by T-bolts, flange nuts and angle pieces, and serve as a skeleton for detecting the ship surface. On the deck through the overlap joint mode with four aluminum plate 4 overlap joints to both sides industry aluminium shaped rod 2, detect the fixed two guardrails 3 of being made by nonrust steel pipe of the mode of bolted connection in ship both sides simultaneously, detect two flotation pontoons 1 in ship lower part and connect with the pin through industry aluminium shaped rod 2 to each side is installed three bracing and is played the fixed action.
In some specific embodiments, the drive structure comprises a propeller 10. In some more specific embodiments, the propeller 10 is fixed by bolts at the middle position of the industrial aluminum type bar 2 at the rear of the inspection ship.
In some specific embodiments, the single/multi-beam sensor 9 and the sonar equipment 11 can be fixed on the wide-channel industrial aluminum-type bar 2 in the middle of the ship through a bolt fixing component such as a T-shaped bolt, a flange nut and the like.
In some specific embodiments, the fixing structure includes an integrated steel plate 5, a sleeve 15 and a fixing rod 6, the integrated steel plate 5 has a through hole in the center for the sleeve to pass through, and the sleeve 15 is inserted into the through hole and fixed to the integrated steel plate 5 by welding; the fixing rod 6 is inserted into the sleeve 15. In some more specific embodiments, the detection vessel is provided with an integrated steel plate 5 arranged between two industrial aluminum type rods 2 through a sliding hinged support at the middle and front position of the ship surface for sliding back and forth; the central position of the integrated steel plate 5 is provided with a round hole as a through hole for inserting the sleeve, the sleeve 15 is inserted into the round hole, and the sleeve 15 is in welded connection with the contact position of the integrated steel plate 5. In some more specific embodiments, four supporting angle steels 16 are respectively used at the upper side and the lower side of the integrated steel plate 5 to fix the steel pipe, i.e. the sleeve, in a bolt connection manner and move the installation position up and down according to the installation requirement, and a fixing rod 6 is inserted into the steel pipe (the fixing rod is a cylinder, so that the water flow impact force can be reduced, and the fixing rod is formed by splicing 1.5m rod pieces through threads on the two sides, and the cylindrical structure is more convenient to assemble).
In some embodiments, the sleeve 15 is reinforced by a fixed bracket consisting of a plurality of support angles 16, which is mounted on the front of the inspection vessel.
In some specific embodiments, the bridge underwater detection ship further comprises a buffer frame 17, and the buffer frame 17 has an arc buffer structure to buffer and detect the vibration of a bridge pier during detection.
In some specific embodiments, the fixing rod 6 is a cylinder with a plurality of threaded joints, so that the length of the fixing rod can be adjusted by mutually splicing.
In some specific embodiments, the fixing structure includes a fixing chain structure for assisting in fixing the hull structure around the pier. In some more specific embodiments, the fixed chain structure comprises hull fixed winches 8 welded to the bow at positions on both sides of the middle of the industrial aluminum-type bar 2. If be equipped with a hull fixed capstan winch respectively at detection ship left side front end, right front end, before carrying out the detection achievement, wind pier stud a week with safety rope 18 or iron chain and be tied on hull fixed capstan winch to the dead lever that will be located detection ship front portion inserts the bottom, makes the more firm stop of detection ship on the surface of water, and the detector of being convenient for carries out bridge underwater structure thing detection operation more safely.
In some specific embodiments, the bridge underwater detection vessel further has a steel rod structure connected to the sleeve 15 to form a double-pipe sleeve structure with the fixing rod, and the steel rod structure is provided with the underwater camera 12. In some more specific embodiments, the integrated steel plate further has another round hole for inserting the underwater camera carrying rod, the specific position is that another round hole is cut at the position of the front end of the sleeve 15, a cylindrical stainless steel rod 7 connected with the underwater camera 12 with a waterproof function is inserted into the round hole to be used as the underwater camera carrying rod, the cylindrical stainless steel rod 7 and the fixed rod 6 are connected underwater through a double-pipe sleeve, and preferably, the cylindrical stainless steel rod 7 is a telescopic rod structure. The engineer can manually or dynamically move the underwater camera up and down along the telescopic rod. As shown in fig. 7, if the depth of water is below 5m, the inspector observes and detects the bridge underwater structure by operating the underwater camera, and transmits video data to a display screen on the ship through a cable, so that the inspector can record the video data conveniently. As shown in fig. 8, if the bridge underwater structure with the water depth of more than 5m is observed and detected by controlling sonar equipment, the detection data can be recorded in real time; during detection, the single-beam sensor is arranged on the water surface, and an inspector on a detection ship controls the single beam to measure the water depth so as to obtain the height of the riverbed section 20 and further obtain the scouring and silting conditions of the riverbed section; the bridge underwater structure object detection is avoided when a detector dives personally, so that the detection work is safer and more efficient.
Based on the above scheme and description, as shown in fig. 7-8, when the detection work is performed, a driver operates the propeller 10 to drive the detection ship to the side of the pier stud, the safety rope/iron chain (the fixed chain structure) is fixed on the hull fixed winch 8 of the detection ship around the pier stud for one circle, and the falling fixed rod 6 is inserted into the riverbed to fix the detection ship; at the moment, for the bridge underwater structure with the water depth of less than 5m, the cylindrical stainless steel rod 7 provided with the underwater camera 12 is moved up and down to detect the bridge underwater structure and collect diseases, and for the bridge underwater structure with the water depth of more than 5m, sonar equipment on a ship is used to detect the bridge underwater structure and collect diseases; meanwhile, the measuring device is arranged at the position of the water surface, and the height of the cross section of the river bed is obtained by measuring the water depth. When the diseases of the same pier stud in different directions are detected, the fixed rod can be pulled out, the safety rope is loosened slightly, the propeller is rotated, and the pier stud can be detected in an all-round and high-precision mode.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A bridge underwater detection ship is characterized by comprising: the device comprises a hull structure, a suspension structure, a driving structure, a fixing structure and a detection device; wherein, two groups of suspension structures are symmetrically arranged at the lower part of the hull structure; the driving structure is fixed on the ship body structure to drive the ship body structure to move; the fixed structure is fixed on the ship hull structure to fix the ship hull structure when the ship hull structure stops running; the detection device at least comprises an underwater camera, a single/multi-beam sensor and sonar equipment.
2. The bridge underwater detection vessel of claim 1, wherein the hull structure includes a hull frame, a deck, and a guardrail; wherein the deck is fixed on the hull frame to form a hull basic structure, and the guard rails are fixed on both sides of the hull basic structure.
3. The bridge underwater detection vessel of claim 2, wherein the hull frame is constructed by overlapping a plurality of industrial aluminum-type bars.
4. The bridge underwater detection vessel of claim 1, wherein the floating structure comprises a pontoon and a plurality of fixed braces, wherein the pontoon is fixed to the hull frame by pins and is fixed by a plurality of fixed braces.
5. The bridge underwater detection vessel of claim 1, wherein the drive structure includes a propeller.
6. The bridge underwater detection ship of claim 1, wherein the fixing structure comprises an integrated steel plate, a sleeve and a fixing rod, a through hole for the sleeve to penetrate through is formed in the center of the integrated steel plate, and the sleeve is inserted into the through hole and is welded and fixed with the integrated steel plate; the fixing rod is inserted into the sleeve.
7. The ship of claim 6, wherein the sleeves are reinforced by fixing brackets consisting of a plurality of supporting angle steels.
8. The underwater bridge inspection ship of claim 6, wherein the fixing rods are cylinders having threaded joints, so that the length of the fixing rods can be adjusted by mutual splicing.
9. The underwater bridge inspection ship of claim 1, wherein the fixing structure includes a fixing chain structure for winding around a pier to assist in fixing the hull structure.
10. The underwater bridge inspection ship of claim 1, further comprising a steel rod structure connected to the sleeve to form a double-pipe sleeve structure with the fixing rods, wherein an underwater camera is disposed on the steel rod structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178366.3A CN111216849A (en) | 2020-03-13 | 2020-03-13 | Bridge underwater detection ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178366.3A CN111216849A (en) | 2020-03-13 | 2020-03-13 | Bridge underwater detection ship |
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| Publication Number | Publication Date |
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| CN111216849A true CN111216849A (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010178366.3A Pending CN111216849A (en) | 2020-03-13 | 2020-03-13 | Bridge underwater detection ship |
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| CN (1) | CN111216849A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113502856A (en) * | 2021-08-03 | 2021-10-15 | 重庆英杰建设工程设计有限责任公司 | Bridge pier foundation underwater detection device and application method thereof |
| CN114635356A (en) * | 2022-04-13 | 2022-06-17 | 天津大学 | Portable combined type detection floating platform |
| CN115262380A (en) * | 2022-05-31 | 2022-11-01 | 为天(深圳)检测科技有限公司 | Use method of pier underwater detection mounting platform |
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| CN2146429Y (en) * | 1993-03-15 | 1993-11-17 | 袁久耀 | Fender device for the ships in port |
| CN1751961A (en) * | 2005-10-19 | 2006-03-29 | 李存扣 | Board protection fender |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113502856A (en) * | 2021-08-03 | 2021-10-15 | 重庆英杰建设工程设计有限责任公司 | Bridge pier foundation underwater detection device and application method thereof |
| CN114635356A (en) * | 2022-04-13 | 2022-06-17 | 天津大学 | Portable combined type detection floating platform |
| CN115262380A (en) * | 2022-05-31 | 2022-11-01 | 为天(深圳)检测科技有限公司 | Use method of pier underwater detection mounting platform |
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