CN110132152B - Automatically controlled touring monitoring devices of concrete gravity dam crack under water - Google Patents
Automatically controlled touring monitoring devices of concrete gravity dam crack under water Download PDFInfo
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- CN110132152B CN110132152B CN201910457443.6A CN201910457443A CN110132152B CN 110132152 B CN110132152 B CN 110132152B CN 201910457443 A CN201910457443 A CN 201910457443A CN 110132152 B CN110132152 B CN 110132152B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
- E02B7/10—Gravity dams, i.e. those in which the weight of the structure prevents overturning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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Abstract
The invention discloses an electric control itinerant monitoring device for underwater cracks of a concrete gravity dam, which comprises a transverse moving device, a vertical moving device, a transverse and vertical connecting device and a shooting device, wherein the transverse moving device is fixed at the top of the dam; the transverse and vertical connecting device comprises a power medium gear and a driven medium gear, and the power medium gear and the driven medium gear are connected with the transverse moving device through a connecting support. According to the invention, the underwater shooting device can carry out full-coverage image acquisition on the dam face of the concrete gravity dam through the gear device, the assembled electrified magnetic wire sleeve and the shooting device, crack monitoring data are expanded in time space, and meanwhile, the device adopts a high-definition camera, and the acquired crack information comprises the crack position, the crack form and the total amount of cracks.
Description
Technical Field
The invention relates to the field of hydraulic structure safety monitoring, in particular to an electric control itinerant monitoring device for an underwater crack of a concrete gravity dam.
Background
Crack monitoring of a concrete gravity dam is an important part for monitoring the structural safety of a dam body. The deformation of the concrete material is easily affected by temperature, and when the temperature field distribution of the concrete structural member is not uniform, the expansion or contraction states of different parts are different, so that temperature cracks can be generated on the surface of the concrete structural member. The concrete gravity dam built in the high-altitude cold area is characterized in that the day and night temperature difference of the dam site area is large, and the surface of the dam body of the concrete gravity dam is easy to generate temperature cracks under the natural climate condition. Therefore, the dam face crack monitoring device specially aiming at the concrete gravity dam operation period in the alpine region and the using method thereof are searched, are the research hotspots of researchers in the field of hydraulic structure safety monitoring for the crack monitoring direction under extreme conditions, and play an important role in the safe and stable operation of the concrete gravity dam structure.
Generally, a crack meter is embedded in some important monitoring positions in a hydraulic structure crack monitoring project, however, this method can only monitor the cracking state of some positions inside the dam body, and the actual effect of crack monitoring is limited, so how to extend the coverage of crack monitoring becomes the direction of research of structural safety monitoring technicians. In addition, in the above-mentioned traditional crack monitoring mode, in case the joint meter breaks down or damages and is difficult for repairing and changing, consequently, along with the increase of concrete gravity dam operating time, the survival rate of joint meter will constantly reduce, and the quality of crack monitoring project can't obtain guaranteeing. Thirdly, the monitoring amount of the joint meter is the opening degree of the cracks, the number of the cracks and the specific shape of the cracks cannot be monitored, and a reinforcing and repairing basis cannot be provided for the dam face cracks of the concrete gravity dam in the severe cold region in the operation period.
For monitoring the number and the shape of cracks, the current mainstream mode is that a diver carries equipment to submerge into the water bottom to inspect the dam surface. The identification of the slight cracks on the dam surface can be realized by a manual inspection mode, but the following problems still exist: firstly, the professional background of manual inspection on actual operators is strong, and the human errors in actual operation and evaluation are difficult to avoid; secondly, diving patrol has certain dangerousness, and particularly, along with the construction of an extra-high dam in recent years, the diving depth even reaches hundreds of meters, so that the difficulty is increased; thirdly, it is difficult to systematically record the crack information of the entire dam face and perform an overall modeling of the dam face.
Along with the development of unmanned aerial vehicle technique, the engineer technical personnel begin to try to adopt the unmanned aerial vehicle mode of patrolling and examining of shooing under water to monitor the pier crack, but because the complexity of environment such as velocity of flow under water, it is difficult to guarantee all the time to patrol and examine the precision that unmanned aerial vehicle cruise at the fixed point under water. In addition, equipment accuracy requirements such as a camera for crack monitoring are higher, and the quality is heavier usually, therefore in actual engineering, the unmanned aerial vehicle price of purchasing guarantee bearing capacity and duration simultaneously is too expensive. Thirdly, the dam surface safety problem is more likely to occur when the underwater environment is severe, and the underwater unmanned aerial vehicle is difficult to realize fixed-point cruise in a scene with severe environment.
To traditional crack monitoring cover not enough, the monitoring volume is single to and artifical patrolling and examining and unmanned aerial vehicle monitoring stability shortcoming such as not enough, can adopt high definition camera under water to carry out the full coverage shooting to the concrete dam face, combine image processing technique to carry out monitoring analysis to dam body surface crack.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an electric control itinerant monitoring device for underwater cracks of a concrete gravity dam in a severe cold area.
The technical scheme is as follows: the device comprises a transverse moving device, a vertical moving device, a transverse and vertical connecting device and a shooting device, wherein the transverse moving device is fixed at the top of the dam, the vertical moving device is arranged on the side surface of the gravity dam, the transverse and vertical connecting device is arranged between the transverse moving device and the vertical moving device, and the shooting device is arranged on one side of the vertical moving device; the transverse and vertical connecting device comprises a power medium gear and a driven medium gear, the power medium gear and the driven medium gear are connected with the transverse moving device through a connecting support, a double-row gear strip is meshed below the power medium gear and the driven medium gear, and one end of the double-row gear strip is fixed with the vertical moving device.
And the other end of the double-row gear strip is provided with a counterweight trolley.
The counterweight trolley comprises a counterweight trolley base and a counterweight trolley support, wherein the counterweight trolley support is provided with a bearing tray.
The bearing tray is provided with an engineering balancing weight.
The bottom of the double-row gear strip is connected with a small sliding wheel which can slide on the top of the dam.
The power medium-size gear and the driven medium-size gear are provided with a medium-size gear connecting shaft between, and two ends of the medium-size gear connecting shaft are located on the outer sides of the power medium-size gear and the driven medium-size gear.
The middle gear connecting shaft is wound with a nylon rope, and the tail end of the nylon rope is connected with a counterweight trolley support.
The transverse moving device comprises a power large-size gear and a driven large-size gear, a gear conveyor belt is sleeved outside the power large-size gear and the driven large-size gear, and a connecting support is connected to the bottom of the gear conveyor belt.
A single row of gear bars are arranged on one side of the vertical moving device, shooting devices are arranged on the single row of gear bars, and the shooting devices are fixed on one side of the vertical moving device through electromagnetic force.
Has the advantages that: the underwater shooting device can carry out full-coverage image acquisition on the concrete rock-fill dam panel through the gear device, the assembled electrified magnetic wire sleeve and the shooting device, crack monitoring data are expanded in time and space, meanwhile, the device adopts a high-definition camera to shoot the surface of the concrete panel, and acquired crack information comprises crack positions, crack forms and the total number of cracks.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is an enlarged view of portion B of FIG. 2;
FIG. 5 is a schematic view of the assembled bushing connection of the present invention;
FIG. 6 is a flow chart of the operation of the present invention;
fig. 7 is a system framework diagram of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 to 5, the present invention includes a lateral moving device, a vertical moving device, a lateral-vertical connecting device, and a photographing device. The large-size gear external power supply 1, the large-size gear connecting shaft 2, the large-size gear support 3, the power large-size gear 4, the driven large-size gear 5 and the gear conveyor belt 33 jointly form a transverse moving device, and power capable of automatically transversely moving is provided for the testing device. The single-row gear rack 15, the plurality of sections of assembled sleeves 16 and the electrified magnet wire form a vertical moving device, and power capable of automatically moving vertically is provided for the testing device. The connecting device comprises a connecting support 6, a power medium gear 7, a driven medium gear 8, a medium gear connecting shaft 9, a medium gear external power supply 31, a nylon rope 32, a double-row gear rack 14, a pulley support 29, a sliding small wheel 30, a counterweight trolley base 10, a counterweight trolley support 11, a bearing tray 12 and a plurality of engineering counterweight blocks 13, and is used for connecting a transverse moving device and a vertical moving device. The LED lamp 21, the underwater high-definition camera 22, the camera support 23, the gear wheel 25, the gear wheel connecting shaft 26, the gear trolley support 27, the gear trolley flat plate 28 and the position sensor 34 form a shooting device for crack image acquisition.
As shown in fig. 1 and 2, the lateral moving device comprises a power large-size gear 4 and a driven large-size gear 5, the two gears are located at the same height, a gear conveyor belt 33 is sleeved outside the two gears, large-size gear connecting shafts 2 are sleeved in the power large-size gear 4 and the driven large-size gear 5, large-size gear supports 3 are fixed at two ends of each large-size gear connecting shaft 2, the large-size gear supports 3 are L-shaped, and the bottoms of the large-size gear supports are fixed on the top of a dam. The large-size power gear 4 is also connected with a large-size gear external power supply 1 which provides power for a small motor in the large-size power gear 4, and the voltage of the external power supply is 220V-380V. The power large-size gear 4 is driven by a built-in small motor, the outer diameter of the power large-size gear is 30-50 cm, the inner diameter of the power large-size gear is 3-5 cm, the width of the power large-size gear is 7-10 cm, the number of teeth is 15-30 teeth, the tooth surface roughness of the power large-size gear is 1.4-1.8, the power large-size gear 4 rotates, a gear conveyor belt 33 and the driven large-size gear 5 are further driven to rotate, and the transverse movement of the shooting device. The size of the driven large gear 5 is consistent with that of the power large gear 4, the diameter is 30-50 cm, the width is 7-10 cm, the number of teeth is 15-30 teeth, the tooth surface roughness is 1.4-1.8, and the arrangement distance between the driven large gear 5 and the power large gear 4 is determined by the length of a dam crest; the inner side teeth of the gear conveyor belt 33 are matched with the power large-size gear 4 and the driven large-size gear 5, and the width of the gear conveyor belt is 5-15 cm. The two large-size gear connecting shafts 2 are made of stainless steel, penetrate through the centers of the power large-size gear 4 and the driven large-size gear 5 respectively and are connected with the large-size gear support 3, the diameter of the large-size gear support is 3-7 cm, the two large-size gear supports 3 are stainless steel pipes, the height of each support is 50-100 cm, the outer diameter of each support is 10-20 cm, and the thickness of each support is 3-5 cm.
The connecting support 6 is fixed at the central position of the bottom of the gear conveyor belt 33 and used for connecting the gear conveyor belt 33 and the medium-sized gear, the connecting support is a stainless steel pipe, the outer diameter of the connecting support is 10-15 cm, the thickness of the connecting support is 2-3 cm, the connecting support 6 is connected with the gear conveyor belt 33 and then divided into a left pipeline and a right pipeline, the tail end of the left pipeline is connected with the driven medium-sized gear 8, and the tail end of the right pipeline is connected with the power medium-sized gear 7, as shown. The power medium gear 7 is connected with a medium gear external power supply 31 to provide power for a small motor internally arranged in the power medium gear, the power supply voltage is 220V-380V, the outer diameter of the power medium gear 7 is 15-25 cm, the inner diameter is 2-4 cm, the number of teeth is 15-30, and the tooth surface roughness is 1.4-1.8; the driven medium gear 8 and the power medium gear 7 are the same in size, the outer diameter is 15-25 cm, the inner diameter is 2-4 cm, the number of teeth is 15-30, and the tooth surface roughness is 1.4-1.8. A middle gear connecting shaft 9 penetrates between the power middle gear 7 and the driven middle gear 8, the tail end of the middle gear connecting shaft 9 exceeds the outer side of the middle gear, the diameter of the middle gear connecting shaft 9 is 0.5-1.5 cm, the length of the middle gear connecting shaft is 10-15 cm, and the diameter of the middle gear connecting shaft 9 is the same as the inner diameter of the power middle gear 7 and the inner diameter of the driven middle gear 8. The bottom of the power medium-size gear 7 and the driven medium-size gear 8 are engaged with a double-row gear strip 14, a medium-size gear connecting shaft 9 between the power medium-size gear 7 and the driven medium-size gear 8 is wound with a nylon rope 32, one end of the nylon rope 32 is wound on the medium-size gear connecting shaft 9, and the other end of the nylon rope is connected with a counterweight trolley support 11, as shown in fig. 1. The two counterweight trolley support bottoms 11 are distributed in a triangular mode, the bottoms of the counterweight trolley support bottoms are connected with counterweight trolley bases 10, the counterweight trolley bases 10 are located on the double-row gear strips 14, and bearing trays 12 are fixed to the tops of the counterweight trolley support bottoms 11 and used for placing engineering counterweight blocks 13. The length of the nylon rope 32 is 3-10 m, the double-row gear rack 14 is matched with the teeth of the power medium-size gear 7 and fixed on two pulley supports 29, and the bottom of each pulley support 29 is provided with a small sliding wheel 30 capable of moving transversely on the top of the dam. One end of the double-row gear rack 14 is provided with a counterweight trolley, the other end of the double-row gear rack 14 is fixedly connected with a vertical moving device, and the length of the double-row gear rack 14 is 10-20 m; the base of the counterweight trolley is made of stainless steel, the length is 1-1.5 m, the width is 1-1.5 m, and the thickness is 3-5 cm; the counterweight trolley support 11 is made of aluminum alloy material, the bearing tray 12 is made of aluminum alloy material, the length is 1-1.5 m, the width is 1-1.5 m, and the height is 20-40 cm; the bearing tray 12 is used for placing the engineering balancing weight 13, the balancing weight provides weight for the balance of the structure, and the weight of the engineering balancing weight 13 is between 100 Kg and 500 Kg. A counterweight trolley is arranged for balancing the weight of the vertical moving device at the right end of the double-row gear rack 14; when the power medium-size gear 7 rotates, the distance between the vertical moving device at the right end of the double-row gear rack 14 and the dam face can be adjusted, and at the moment, the position of the medium-size gear on the gear rack can be changed by the counterweight trolley through the nylon rope 32 wound on the medium-size gear connecting shaft 9, so that new balance is achieved.
The vertical moving device comprises a plurality of sections of assembled sleeves 16, as shown in fig. 5, the plurality of sections of assembled sleeves 16 are assembled together through high-strength bolts 24, a single row of gear bars 15 is arranged on the left side of the assembled sleeves 16, and two groups of electrified magnet wires are arranged inside each section of assembled sleeve 16. After the electrified magnet wire in the assembled sleeve 16 is powered on, electromagnetic force is generated, and the gear rotating wheel 25 in the shooting device is made of stainless iron, so that the shooting device can be fixed on the single-row gear strip 15 of the vertical moving device through the electromagnetic force. The motion of the shooting device is realized by controlling the electrified magnet wire along the way to be sequentially opened and closed, for example, when the shooting device needs to descend at a constant speed, the electrified magnet wire power supply is sequentially opened and closed from top to bottom, that is, the electrified magnet wire power supply in the next section of the assembled casing 16 is opened, the electrified magnet wire power supply in the assembled casing 16 where the shooting device is located is closed, and the shooting device is pulled to descend through the change of the electromagnetic force position.
The single-row gear strip 15 is matched with teeth of a gear rotating wheel 25 in the gear trolley, the length of the single-row gear strip is 50-150 m, and the length of the single-row gear strip 15 is consistent with that of the plurality of sections of assembled sleeves 16; the assembled sleeve 16 is an aluminum alloy pipe, the length of each section is 50-100 cm, the outer diameter is 10-20 cm, the thickness is 2-3 mm, and the specification of the high-strength bolt 24 for assembling the sleeve is M16-M30. The electrified magnetic wire comprises an outer box 17 made of polyvinyl chloride, a magnet 19 is arranged in the outer box, an electrified wire 20 is wound on the magnet 19, a power supply 18 is arranged on the electrified wire 20, and the voltage of the power supply 18 is 220-380V; the length of the magnet 19 is 10-20 cm, and the diameter is 5-10 cm; the electrified conducting wire 20 is a copper wire with an insulating layer, the gear wheel 25 of the gear trolley can move in the vertical direction on a sleeve with the built-in electrified magnetic conducting wire, and the single-row gear strip 15 is used as a track for moving in the vertical direction.
As shown in fig. 3, the gear trolley comprises two gear wheels 25, and is connected with a gear trolley bracket 27 through two gear wheel connecting shafts 26 sleeved in the gear wheels, the gear wheels 25 are small-size gears, the two gear wheels 25 are same in size, are made of stainless iron, have an outer diameter of 10-20 cm, an inner diameter of 1-2 cm and a width of 5-10 cm, each gear comprises 15-30 teeth, and the roughness of the tooth surface is 1.4-1.8; the two gear wheel and rotating wheel connecting shafts 26 are the same in size, the diameter is 0.5-1.5 cm, the length is 10-15 cm, and the diameter of the gear wheel and rotating wheel connecting shafts 26 is the same as the inner diameter of the gear wheels 25; the gear trolley support 27 is made of solid stainless steel and is in an isosceles triangle shape, the length of two waist portions of the support is 10-20 cm, the length of a bottom edge of the support is 15-20 cm, the gear trolley support 27 is fixed to two sides of a gear rotating wheel 25 and is respectively fixed to a gear rotating wheel connecting shaft 26, a gear trolley flat plate 28 is fixed to an apex angle of the gear trolley support 27, the gear trolley flat plate 28 is made of stainless steel, the length of the gear trolley flat plate is 20-30 cm, the width of the gear trolley flat plate is 15-25 cm, the thickness of the gear trolley flat plate is 3-5 cm, and the gear trolley flat plate; the LED lamp 21 is fixed on a flat plate of the trolley, the input voltage of the LED lamp 21 is 12-24V, the luminous flux is 1000-2000 lm, and the LED lamp is made of stainless steel and toughened glass; the camera support 23 is fixed on the trolley support and made of stainless steel, the length is 15-20 cm, the width is 15-20 cm, and the thickness is 3-5 cm; the underwater high-definition camera 22 is fixedly arranged on the camera support 23, the waterproof grade of the underwater high-definition camera 22 is 50-200 m underwater, the recording resolution is 1080 p-1440 p, and the top of the underwater high-definition camera 22 is fixedly provided with a position sensor 34 for collecting position information of the underwater camera.
A use method of an electric control itinerant monitoring device for underwater cracks of a concrete gravity dam is shown in figure 6 and comprises the following steps:
(1) the method comprises the following steps of sequentially installing a transverse moving device, a transverse and vertical connecting device, a vertical moving device and a position sensor, placing an engineering counterweight block with the weight of 100-500 Kg on a bearing tray, installing an underwater high-definition camera on a camera support of a gear trolley, and switching on a power supply of a power large-size gear to drive the gear conveyor belt and the transverse and vertical connecting device to move transversely.
(2) The power large-size gear power supply is turned off when the underwater camera transversely moves for 1-2 m, the electrified magnetic wire power supply is controlled to be turned on in sequence through the remote sensing switch, the gear trolley descends at a constant speed, the underwater high-definition camera starts to shoot, the position sensor collects the position of the underwater camera, and meanwhile, workers on the surface view underwater photographic image effects through VR equipment.
(3) After shooting is finished, the video is cached and compressed, meanwhile, position data collected by the position sensor is collected, and shot image data and the position data are packaged and uploaded to the web server and the data server, as shown in fig. 7.
(4) The method comprises the steps that monitoring management personnel download corresponding data on a web server for processing, firstly, a video format is converted into a picture format, then binarization processing is conducted on the picture, abnormal pictures selected by a program are led out after the picture is analyzed by the program, the monitoring management personnel conduct manual judgment on the abnormal pictures, and finally, analysis results and data in an analysis process are stored in a data server.
(5) And establishing a three-dimensional model for the concrete gravity dam, importing crack monitoring data into a model database, and performing finite element structure calculation analysis.
(6) The user terminal can check the three-dimensional model and the crack monitoring result, check the model database, retrieve the monitoring information and realize the visualization of the monitoring data.
Example 1:
purchasing an external power supply 1 of a large-size gear, wherein the voltage of the external power supply 1 is 220-380V (220V in the embodiment), purchasing a power large-size gear 4 and a driven large-size gear 5, the outer diameter of the power large-size gear is 30-50 cm (40 cm in the embodiment), the inner diameter of the power large-size gear is 3-5 cm (4 cm in the embodiment), the width of the power large-size gear is 7-10 cm (8 cm in the embodiment), the number of teeth is 15-30 teeth (15 teeth in the embodiment), the tooth surface roughness of the teeth is 1.4-1.8 (1.5 in the embodiment), purchasing two large-size gear connecting shafts 2, the diameter of the two large-size gear connecting shafts is 3-7 cm (4 cm in the embodiment), installing the two large-size gears through the centers, purchasing two groups of large-size gear supports 3, the height of the two groups of the large-size gear supports is 50-100 cm (70 cm in the embodiment), the outer diameter of the two groups of the large-size gear, and assembling the transverse moving device.
Prefabricating a connecting bracket 6, wherein the outer diameter of the connecting bracket is 10-15 cm (12 cm in the embodiment), the thickness of the connecting bracket is 2-3 cm (2 cm in the embodiment), a connecting gear conveyor belt 33 and a medium power gear 7 are purchased, a medium power gear 7 and a driven medium gear 8 are purchased, the outer diameter of the connecting bracket is 15-25 cm (20 cm in the embodiment), the inner diameter of the connecting bracket is 2-4 cm (2 cm in the embodiment), the number of teeth is 15-30 (15 teeth in the embodiment), the tooth surface roughness of the connecting bracket is 1.4-1.8 (1.5 cm in the embodiment), a medium gear connecting shaft 9 is purchased, the diameter of the connecting bracket is 0.5-1.5 cm (1.5 cm in the embodiment), the length of the connecting bracket is 10-15 cm (12 cm in the embodiment), an external power supply 31 of the medium gear is purchased, and the power supply voltage of the connecting; the prefabricated nylon rope 32 is 3-10 m (9 m in the embodiment), the prefabricated double-row gear strip 14 is 10-20 m (15 m in the embodiment), the prefabricated counterweight trolley base 10 is placed at one end of the double-row gear strip 14, the prefabricated counterweight trolley base is 1-1.5 m (1.2 m in the embodiment), 3-5 cm (3 cm in the embodiment), the prefabricated counterweight trolley support 11 is 30-50 cm (40 cm in the embodiment), the prefabricated bearing tray is used for placing the engineering counterweight block 13, the prefabricated bearing tray is 1-1.5 m (1.0 m in the embodiment), 20-40 cm (30 cm in the embodiment), and the transverse and vertical connecting device is assembled.
The length of the prefabricated single-row gear rack 15 is 50-150M (120 cm in the embodiment), the length of each section of the prefabricated assembled casing 16 is 50-100 cm (100 cm in the embodiment), the outer diameter of each section of the prefabricated assembled casing is 10-20 cm (10 cm in the embodiment), the thickness of each section of the prefabricated assembled casing is 2-3 mm (3 mm in the embodiment), the casing is assembled through a high-strength bolt 24 (M16 in the embodiment), two outer boxes 17 are arranged in each section of the casing, a purchased magnet 19 is arranged in each outer box 17, the length of each outer box 17 is 10-20 cm (15 cm in the embodiment), the diameter of each outer box is 5-10 cm (8 cm in the embodiment), an electrified lead 20 is purchased, the total length of the prefabricated single-row gear rack is 50-100M (80M in the embodiment), and a vertical moving device.
Purchasing two small gears 25, each of which has a diameter of 10 to 20cm (20 cm in this embodiment), an inner diameter of 1 to 2cm (1 cm in this embodiment), and a width of 5 to 10cm (7 cm in this embodiment), and each of which has 15 to 30 teeth (15 cm in this embodiment) and a tooth surface roughness of 1.4 to 1.8 (1.5 cm in this embodiment); purchasing two gear wheel and wheel connecting shafts 26, the diameter of each gear wheel and wheel connecting shaft 26 is 0.5-1.5 cm (1.0 cm in the embodiment), the length of each gear wheel and wheel connecting shaft is 10-15 cm (15 cm in the embodiment), the gear connecting shafts 26 are connected with two gear wheels 25, a gear trolley support 27 and a prefabricated gear trolley support 27, the length of two waists of each gear wheel and wheel connecting shaft is 10-20 cm (10 cm in the embodiment), the length of a bottom side of each gear wheel and wheel connecting shaft is 15-20 cm (15 cm in the embodiment), a prefabricated trolley flat plate 28 is 20-30 cm (25 cm in the embodiment), the width of each gear wheel and wheel connecting shaft is 15-25 cm (20 cm in the embodiment), the thickness of each gear. The method comprises the steps of purchasing an LED lamp 21, wherein the input voltage of the LED lamp 21 is 12-24V (12V in the embodiment), the luminous flux is 1000-2000 lm (1500 ml in the embodiment), installing the LED lamp 21 on a trolley flat plate 28, purchasing a camera support 23, the length of the camera support is 15-20 cm (15 cm in the embodiment), the width of the camera support is 15-20 cm (15 cm in the embodiment), the thickness of the camera support is 3-5 cm (3 cm in the embodiment), purchasing an underwater high-definition camera 22, the waterproof grade of the underwater high-definition camera 22 is 50-200 m (150 m in the embodiment), the recording resolution is 1080 p-1440 p (1440 p in the embodiment), fixing the camera support 23 at the lower end of the trolley flat plate 28, fixing the underwater high-definition camera 22 on the camera support 23, and fixing a.
According to the distribution characteristic that the temperature cracks of the concrete gravity dam are located on the surface of the dam body, the underwater high-definition camera arranged on the plane full-coverage moving support is used for shooting the concrete dam surface, and the cracks on the surface of the dam body are monitored and analyzed by combining an image processing technology. In addition, a fracture monitoring data sharing platform is established, and the fracture monitoring data in the region is shared and uploaded, so that the centralized analysis and management of a drainage basin management mechanism are facilitated.
Claims (4)
1. An electric control itinerant monitoring device for underwater cracks of a concrete gravity dam is characterized by comprising a transverse moving device, a vertical moving device, a transverse and vertical connecting device and a shooting device, wherein the transverse moving device is fixed on the top of the dam; the transverse and vertical connecting device comprises a power medium-size gear and a driven medium-size gear, the power medium-size gear and the driven medium-size gear are connected with a transverse moving device through a connecting support, double rows of gear strips are meshed below the power medium-size gear and the driven medium-size gear, one ends of the double rows of gear strips are fixed with the vertical moving device, a counterweight trolley is arranged at the other ends of the double rows of gear strips and comprises a counterweight trolley base and a counterweight trolley support, wherein a bearing tray is arranged on the counterweight trolley support, the transverse moving device comprises a power large-size gear and a driven large-size gear, a gear conveying belt is sleeved outside the power large-size gear and the driven large-size gear, the bottom of the gear conveying belt is connected with the connecting support, the vertical moving device comprises a plurality of sections of assembled sleeves, and a single row of gear strips is arranged on one side of each assembled sleeve, the single-row gear strip is provided with a shooting device, each section of the assembled casing is internally provided with a live magnet wire, the live magnet wires in the assembled casing are connected with a power supply to generate electromagnetic force, and the shooting device can be fixed on the single-row gear strip of the vertical moving device through the electromagnetic force; when the underwater high-definition camera is used, a transverse moving device, a transverse and vertical connecting device and a vertical moving device are sequentially installed, an engineering counterweight block is placed on a bearing tray, the underwater high-definition camera is installed on a camera support of a gear trolley, a position sensor is fixed at the top of the underwater high-definition camera, and a power supply of a power large-size gear is switched on to drive the gear conveyor belt and the transverse and vertical connecting device to transversely move; when the underwater camera moves 1-2 m in the transverse direction, a power large-size gear power supply is turned off, a remote sensing switch controls an electrified magnetic wire power supply to be turned on in sequence, a gear trolley descends at a constant speed, an underwater high-definition camera starts to shoot, a position sensor collects the position of the underwater camera, and meanwhile, workers on the surface check the effect of underwater shot images through VR equipment; after shooting is finished, caching and compressing the video, collecting position data collected by a position sensor, and packaging and uploading shot image data and the position data to a web server and a data server; the monitoring management personnel downloads corresponding data on the web server for processing, and finally stores the analysis result and the data of the analysis process to the data server; establishing a three-dimensional model for the concrete gravity dam, importing crack monitoring data into a model database, and performing finite element structure calculation analysis; the user terminal can check the three-dimensional model and the crack monitoring result, check the model database, retrieve the monitoring information and realize the visualization of the monitoring data.
2. The electric control itinerant monitoring device for the underwater cracks of the concrete gravity dam according to claim 1, wherein a small sliding wheel is connected to the bottom of the double rows of gear bars and can slide on the top of the dam.
3. The electric control itinerant monitoring device for the underwater cracks of the concrete gravity dam according to claim 1, wherein a medium-size gear connecting shaft is arranged between the power medium-size gear and the driven medium-size gear, and two ends of the medium-size gear connecting shaft are located on the outer sides of the power medium-size gear and the driven medium-size gear.
4. The electric control itinerant monitoring device for the underwater crack of the concrete gravity dam according to claim 3, wherein a nylon rope is wound on the middle-size gear connecting shaft, and the tail end of the nylon rope is connected with a counterweight trolley support.
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| CN103048330A (en) * | 2012-12-18 | 2013-04-17 | 河海大学常州校区 | Visual detecting device for surface crack of underwater structure |
| CN106226157A (en) * | 2016-08-31 | 2016-12-14 | 孙金更 | Concrete structure member crevices automatic detection device and method |
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| JPH11304440A (en) * | 1998-02-23 | 1999-11-05 | Mitsubishi Heavy Ind Ltd | Deformation monitor device |
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| CN205809002U (en) * | 2016-06-12 | 2016-12-14 | 山西水利职业技术学院 | One dam slope perils detecting device under water |
| CN207408315U (en) * | 2017-10-30 | 2018-05-25 | 武汉江韵勘测工程集团有限公司 | A kind of underwater Bridge Crack detector |
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|---|---|---|---|---|
| CN103048330A (en) * | 2012-12-18 | 2013-04-17 | 河海大学常州校区 | Visual detecting device for surface crack of underwater structure |
| CN106226157A (en) * | 2016-08-31 | 2016-12-14 | 孙金更 | Concrete structure member crevices automatic detection device and method |
| CN208672532U (en) * | 2017-08-14 | 2019-03-29 | 南通市交通建设咨询监理有限公司 | A kind of bridge bottom crack detection device |
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Inventor after: Gu Chongshi Inventor after: Shao Chenfei Inventor after: Hu Yating Inventor after: Fu Xiao Inventor after: Qin Xiangnan Inventor before: Shao Chenfei Inventor before: Gu Chongshi Inventor before: Hu Yating Inventor before: Fu Xiao Inventor before: Qin Xiangnan |