A leakage detection device suitable for water conservancy projects

Abstract

The utility model provides a kind of leakage detection device suitable for water conservancy project, it is related to water conservancy operation and maintenance technical field, including dam body, the dam top of dam body is provided with mobile transport vehicle, the reel is rotatably connected on the mobile transport vehicle, traction rope is wound on the reel, the backwater surface of dam body is provided with the detection trolley fixedly connected with the traction rope tail end, by driving reel rotation on mobile transport vehicle and releasing traction rope, detection trolley is lowered to detection position along the backwater surface of dam body, after completion, control mobile transport vehicle and detection trolley move along the same height slope surface of backwater surface of dam body according to same moving position, detection camera detects and records the backwater surface of this height in process, staff observes the crack of backwater surface of dam body according to the picture of detection camera shooting, avoid the uncertainty of artificial naked eye direct observation, and further guarantee the life safety of staff.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering operation and maintenance, and in particular to a leakage detection device suitable for water conservancy projects. Background Technology

[0002] In the field of water conservancy project operation and maintenance, dams, as key flood control and water storage facilities, directly affect the safety of life and property in downstream areas. The backwater surface of the dam, due to its long-term exposure to the natural environment, is susceptible to cracks, spalling, and other defects caused by rainwater erosion, temperature changes, and geological subsidence. If these defects are not detected and addressed in a timely manner, they may gradually expand and lead to structural hazards. Therefore, regularly conducting comprehensive leakage detection on the backwater surface of the dam is one of the core aspects of operation and maintenance work.

[0003] Currently, leakage detection on the backwater side of dams mainly relies on manual inspection. Workers need to use climbing equipment or suspension devices to approach the backwater side and record the slope conditions through visual observation and handheld instrument measurements. However, this method has significant limitations: First, the backwater side of dams is mostly a sloping surface, with steep slopes and narrow working spaces in some areas, posing safety risks such as falls and collisions to workers, especially in inclement weather. Second, manual observation is affected by subjective experience and visual range, resulting in low accuracy in identifying minute cracks and hidden defects, easily leading to missed detections and misjudgments. Moreover, the detection efficiency is low, making it difficult to achieve comprehensive coverage detection of leakage on the backwater side of the dam.

[0004] Therefore, in view of the problems of high safety risks, low detection accuracy and cumbersome equipment operation in the existing methods of leakage detection on the backwater surface of dams, it is necessary to develop a new type of detection device that can realize the stable lowering and horizontal movement of the detection trolley, ensure detection accuracy and improve operational safety, so as to fill the technological gap in the industry and meet the actual application needs of water conservancy project operation and maintenance, i.e. leakage detection. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art and to propose a leakage detection device suitable for water conservancy projects.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a leakage detection device suitable for water conservancy projects, comprising a dam body, a mobile transport vehicle mounted on the top of the dam body, a take-up roller rotatably connected to the mobile transport vehicle, a traction rope wound on the take-up roller, a detection trolley fixedly connected to the end of the traction rope on the backwater side of the dam body, two guide rods symmetrically arranged on the upper surface of the detection trolley, an mounting plate fixedly connected to the upper end face of the two guide rods, a detection camera for photographing and recording slope cracks on the backwater side of the dam body mounted on the mounting plate, and an adjustment device for driving the camera to adjust the detection angle on the mounting plate.

[0007] Preferably, a threaded rod is rotatably connected to the upper surface of the detection trolley and located between the two guide rods. A motor with an output shaft fixedly connected to the bottom of the mounting plate and fixedly connected to the upper end face of the threaded rod is also fixedly connected to the two guide rods. A cross auxiliary wheel frame with a threaded connection to the threaded rod is also slidably connected to the two guide rods. The ends of each horizontal arm and vertical rod of the cross auxiliary wheel frame are fixedly connected to mounting blocks, and each mounting block is rotatably connected to an auxiliary guide wheel.

[0008] Preferably, the orientation of each of the auxiliary guide wheels is perpendicular to the direction of wheel movement of the detection trolley.

[0009] Preferably, the adjustment device includes a slide groove opened along the long side of the upper surface of the mounting plate. An electric telescopic rod parallel to the slide groove is fixedly connected to the upper surface of the mounting plate. A rack that is slidably connected to the telescopic end of the electric telescopic rod is fixedly connected to the telescopic end of the rod. A rotating shaft whose end is fixedly connected to the detection camera is also rotatably connected to the upper surface of the mounting plate and near the rack. A transmission gear that meshes with the rack is fixedly connected to the end face of the rotating shaft that passes through the mounting plate and extends upward.

[0010] Preferably, a water tank and a water pump are fixedly connected to the mounting plate, and a rotary joint is rotatably connected to the mounting plate. The water pump has connecting water pipes at its inlet and outlet ends that are respectively connected to the water tank and the rotary joint. A transmission sprocket is fixedly connected to the outer surface of the rotary joint and the rotating shaft, and to the top of the mounting plate. A transmission chain is provided between the two transmission sprockets. A high-pressure nozzle is fixedly connected to the end face of the rotary joint that extends downward through the mounting plate.

[0011] Preferably, the mobile transport vehicle is also fixedly connected to a motor whose output shaft is fixedly connected to one end face of the take-up roller rotating shaft.

[0012] Preferably, the top of the dam body is also fixedly connected with a protective guide rail.

[0013] Preferably, the mobile transport vehicle is also symmetrically provided with two hydraulic rods on the outer surface of the backwater side of the dam body. The telescopic ends of the two hydraulic rods are fixedly connected to the mounting clamps, and the mounting clamps are rotatably connected to the fixed pulleys for limiting and guiding the traction rope.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by driving the take-up roller on the mobile transport vehicle to rotate and releasing the traction rope, the inspection trolley is lowered to the inspection position along the backwater surface of the dam body. After completion, the mobile transport vehicle and the inspection trolley are controlled to move along the slope of the backwater surface of the dam body at the same height at the same moving position. During the process, the inspection camera inspects and records the backwater surface at the same height. Based on the image captured by the inspection camera, the staff observes the cracks on the backwater surface of the dam body. After completion, the take-up roller is driven to rotate again and the traction rope is released to lower the inspection trolley to a position further away from the top of the slope. The above operation is repeated, so as to achieve a comprehensive inspection of the slope condition of the backwater surface of the dam, avoid the uncertainty of errors in direct observation by the naked eye, and further ensure the safety of the staff.

[0015] 2. In this utility model, when the detection trolley is lowered along the backwater surface of the dam, the motor starts and drives the threaded rod to rotate. Because the cross auxiliary wheel frame is threadedly connected to the threaded rod and limited by the guide rod, it will move towards the slope until the auxiliary guide wheel is in close contact with the slope. The auxiliary guide wheel, by virtue of its direction perpendicular to the wheel, laterally limits the detection trolley, ensuring its stable downward movement along the slope. When the detection trolley needs to move horizontally to the designated position, the motor rotates in the opposite direction, driving the threaded rod to move the cross auxiliary wheel frame away from the slope, causing the auxiliary guide wheel to disengage. At this time, the detection trolley, relying on its own wheels, moves along the dam crest parallel to the slope with the mobile transport vehicle, achieving stable detection at the current height without the need to adjust the angle, without hindering movement, and ensuring that the camera is aligned with the slope, further improving the practicality of the device while ensuring the effectiveness of the device. Attached Figure Description

[0016] Figure 1 This utility model presents a three-dimensional structural schematic diagram of a leakage detection device suitable for water conservancy projects; Figure 2 This invention proposes a leakage detection device suitable for water conservancy projects. Figure 1 A partial top-view structural schematic diagram; Figure 3 This utility model provides a front view of the detection trolley in a leakage detection device suitable for water conservancy projects; Figure 4 This invention presents a three-dimensional structural diagram of a detection trolley in a leakage detection device suitable for water conservancy projects.

[0017] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0018] Legend: 1. Dam body; 2. Mobile transport vehicle; 3. Take-up roller; 4. Traction rope; 5. Inspection trolley; 6. Guide rod; 7. Mounting plate; 8. Inspection camera; 9. Threaded rod; 10. Cross auxiliary wheel frame; 11. Mounting block; 12. Auxiliary guide wheel; 13. Slide groove; 14. Electric telescopic rod; 15. Rack; 16. Rotating shaft; 17. Transmission gear; 18. Water tank; 19. Water pump; 20. Rotary joint; 21. Connecting water pipe; 22. Transmission sprocket; 23. Transmission chain; 24. High-pressure nozzle; 25. Electric motor; 26. Protective guide rail; 27. Hydraulic rod; 28. Mounting clamp; 29. ​​Fixed pulley; 30. Electric motor. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein, and therefore the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] like Figure 1-5 As shown, a leakage detection device suitable for water conservancy projects includes a dam body 1, a mobile transport vehicle 2 installed on the top of the dam body 1, a take-up roller 3 rotatably connected to the mobile transport vehicle 2, a traction rope 4 wound on the take-up roller 3, a detection trolley 5 fixedly connected to the end of the traction rope 4 on the backwater side of the dam body 1, two guide rods 6 symmetrically arranged on the upper surface of the detection trolley 5, an mounting plate 7 fixedly connected to the upper end face of the two guide rods 6, a detection camera 8 for photographing and recording slope cracks on the backwater side of the dam body 1 on the mounting plate 7, and an adjustment device for driving the detection camera 8 to adjust the detection angle on the mounting plate 7. The mobile transport vehicle 2 is also fixedly connected to a motor 25 whose output shaft is fixedly connected to one end face of the rotating shaft of the take-up roller 3; The adjustment device includes a slide groove 13 opened along the long side of the upper surface of the mounting plate 7. An electric telescopic rod 14 parallel to the slide groove 13 is also fixedly connected to the upper surface of the mounting plate 7. A rack 15 that is slidably connected to the telescopic end of the electric telescopic rod 14 is fixedly connected to the telescopic end of the electric telescopic rod 14. A rotating shaft 16 whose end is fixedly connected to the detection camera 8 is also rotatably connected to the upper surface of the mounting plate 7 and near the rack 15. A transmission gear 17 that meshes with the rack 15 is also fixedly connected to the end face of the rotating shaft 16 that passes through the mounting plate 7 and extends upward.

[0022] The specific working process of this plan is as follows: First, the staff places the mobile transport vehicle 2 at the preset initial position on the top of the dam. The motor 25 drives the take-up roller 3 to rotate and releases the traction rope 4. The traction rope 4 drives the detection trolley 5 to slide down the backwater surface of the dam until it reaches the position to be detected. At this time, the take-up roller 3 stops rotating and the traction rope 4 is tensioned to fix the detection trolley 5. Next, the horizontal inspection phase begins. Once completed, the mobile transport vehicle 2 and the inspection vehicle 5 are moved at the same speed along the slope at the same height on the backwater side of the dam body 1. During the process, the inspection camera 8 inspects and records the backwater side at the same height. During the operation, the inspection camera 8 continuously captures and records the slope condition. The staff can view the images transmitted by the inspection camera 8 through the terminal, observe abnormalities such as cracks and seepage, and mark and retain the data. After the inspection is completed, the take-up roller 3 drive mechanism is restarted to release more traction rope 4 so that the inspection trolley 5 slides down to a lower inspection position. Once the trolley is stable, the above horizontal movement inspection steps are repeated to achieve a comprehensive inspection of the backwater slope of the dam body 1.

[0023] like Figure 3 and Figure 4 As shown, a threaded rod 9 is rotatably connected to the upper surface of the detection trolley 5 and located between the two guide rods 6. A motor 30 with an output shaft fixedly connected to the bottom of the mounting plate 7 and fixedly connected to the upper end face of the threaded rod 9 is also fixedly connected to the two guide rods 6. A cross auxiliary wheel frame 10 with the threaded rod 9 is also slidably connected to the two guide rods 6. The ends of each horizontal arm and vertical rod of the cross auxiliary wheel frame 10 are fixedly connected to mounting blocks 11, and auxiliary guide wheels 12 are rotatably connected to each mounting block 11. The orientation of each auxiliary guide wheel 12 is perpendicular to the direction of movement of the wheels of the detection trolley 5.

[0024] Further explanation of this scheme: During the process of the detection trolley 5 being lowered along the backwater surface of the dam, the motor 30 starts and drives the threaded rod 9 to rotate. Since the cross auxiliary wheel frame 10 is threadedly connected to the threaded rod 9 and is limited by the guide rod 6, the threaded rod 9 will drive the cross auxiliary wheel frame 10 to move towards the slope until the auxiliary guide wheel 12 is in close contact with the backwater surface of the dam. At this time, the auxiliary guide wheel 12, with its perpendicular setting to the wheel, limits the detection trolley 5 laterally, ensuring that the detection trolley 5 always moves stably down the slope, avoiding jamming or tilting. When the detection trolley 5 is lowered to the designated detection position and needs to move along the current slope height, the motor 30 changes its rotation direction, driving the threaded rod 9 to rotate in the opposite direction, causing the cross auxiliary wheel frame 10 to move away from the slope, so that the auxiliary guide wheel 12 is removed from the slope. At this time, the detection trolley 5 switches to moving along the slope by its own wheels, cooperating with the mobile transport vehicle 2 to move along the top of the dam parallel to the slope, achieving stable detection movement along the current height without needing to adjust the angle of the detection trolley 5. During this process, since the auxiliary guide wheel 12 has been removed from the slope, it will not obstruct the lateral movement of the wheels, while ensuring that the detection camera 8 is always pointed at the slope detection area.

[0025] like Figure 2 As shown, two hydraulic rods 27 are symmetrically arranged on the outer surface of the mobile transport vehicle 2 near the backwater side of the dam body 1. The telescopic ends of the two hydraulic rods 27 are fixedly connected to the mounting clamps 28. Fixed pulleys 29 for limiting and guiding the traction rope 4 are rotatably connected to the mounting clamps 28.

[0026] The effect of this solution is as follows: First, the position of the fixed pulley 29 can be flexibly adjusted by the hydraulic rod 27, so that the traction rope 4 always maintains a reasonable force angle, avoiding damage caused by friction between the traction rope 4 and the dam body 1 or other components due to improper angle, and extending the service life of the traction rope 4. Meanwhile, the fixed pulley 29 can effectively limit the swaying of the traction rope 4, ensuring that the inspection trolley 5 remains stable during movement, preventing the inspection trolley 5 from colliding with the dam slope due to the swaying of the traction rope 4, ensuring the safety of the inspection trolley 5 and the inspection equipment, and improving the stability of the inspection process.

[0027] like Figure 4 As shown, a water tank 18 and a water pump 19 are also fixedly connected to the mounting plate 7. A rotary joint 20 is also rotatably connected to the mounting plate 7. The water inlet and outlet of the water pump 19 are provided with connecting water pipes 21 that are respectively connected to the water tank 18 and the rotary joint 20. The outer surface of the rotary joint 20 and the rotating shaft 16, and above the mounting plate 7, are both fixedly connected with transmission sprockets 22. A transmission chain 23 is provided between the two transmission sprockets 22. A high-pressure nozzle 24 is fixedly connected to the end face of the rotary joint 20 that passes through the mounting plate 7 and extends downward.

[0028] Further explanation of this solution: When there is dust, stains, or other debris on the backwater surface of the dam that affects the clarity of the detection camera 8, the water pump 19 can be started. The water pump 19 draws clean water from the water tank 18 through the connecting water pipe 21 at the inlet end, and then delivers the clean water to the rotary joint 20 through the connecting water pipe 21 at the outlet end. At the same time, when the detection camera 8 adjusts its angle, the rotating shaft 16 drives the transmission sprocket 22 fixed to it to rotate, which in turn drives the transmission sprocket 22 on the rotary joint 20 to rotate through the transmission chain 23, thereby causing the rotary joint 20 to rotate. The rotary joint 20 drives the high-pressure nozzle 24 below to rotate, and the high-pressure nozzle 24 sprays the clean water delivered from the rotary joint 20 in a high-pressure form. During the rotation, the backwater surface of the dam is thoroughly washed to prevent dust or soil from obscuring the seepage gaps on the backwater surface of the dam body 1, which would further affect the performance of the detection camera 8.

[0029] like Figure 1 As shown, the top of the dam body 1 is also fixedly connected with a protective guide rail 26.

[0030] Further explanation of this plan: First, the protective guide rail 26 provides a safety guarantee for the movement of the mobile transport vehicle 2 on the top of the dam, effectively preventing the mobile transport vehicle 2 from sliding off the top of the dam due to accidental circumstances, and ensuring the safety of life and property of staff and equipment; Meanwhile, the protective guide rail 26 ensures that the mobile transport vehicle 2 moves stably along the preset path, so that the take-up roller 3 can maintain a stable force and direction when releasing or retracting the traction rope 4, thereby ensuring the stability of the inspection trolley 5 moving on the backwater surface of the dam and providing a safe foundation for the smooth progress of the inspection work.

[0031] The wiring diagrams of the motor 30, electric motor 25, electric telescopic rod 14, and hydraulic rod 27 in this utility model are common knowledge in the field. Their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring layouts of the motor 30, electric motor 25, electric telescopic rod 14, and hydraulic rod 27 will not be explained in detail.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A leakage detection device suitable for water conservancy projects, comprising a dam body (1), characterized in that: A mobile transport vehicle (2) is installed on the top of the dam body (1). The mobile transport vehicle (2) is rotatably connected to a take-up roller (3). A traction rope (4) is wound on the take-up roller (3). A detection trolley (5) is fixedly connected to the end of the traction rope (4) on the backwater side of the dam body (1). Two guide rods (6) are symmetrically arranged on the upper surface of the detection trolley (5). An installation plate (7) is fixedly connected to the upper end face of the two guide rods (6). A detection camera (8) for photographing and recording the slope cracks on the backwater side of the dam body (1) is installed on the installation plate (7). An adjustment device for driving the detection camera (8) to adjust the detection angle is also provided on the installation plate (7).

2. The leakage detection device for water conservancy projects according to claim 1, characterized in that: The upper surface of the detection trolley (5) and between the two guide rods (6) are rotatably connected to a threaded rod (9). The bottom of the mounting plate (7) is fixedly connected to a motor (30) whose output shaft is fixedly connected to the upper end face of the threaded rod (9). The two guide rods (6) are also slidably connected to a cross auxiliary wheel frame (10) threadedly connected to the threaded rod (9). The ends of each horizontal arm and vertical rod of the cross auxiliary wheel frame (10) are fixedly connected to mounting blocks (11). Each mounting block (11) is rotatably connected to an auxiliary guide wheel (12).

3. A leakage detection device suitable for water conservancy projects according to claim 2, characterized in that: The orientation of each of the auxiliary guide wheels (12) is perpendicular to the direction of wheel movement of the detection trolley (5).

4. A leakage detection device suitable for water conservancy projects according to claim 1, characterized in that: The adjustment device includes a slide groove (13) opened along the long side of the upper surface of the mounting plate (7). An electric telescopic rod (14) parallel to the slide groove (13) is also fixedly connected to the upper surface of the mounting plate (7). A rack (15) slidably connected to the telescopic end of the electric telescopic rod (14) is fixedly connected to the telescopic end of the electric telescopic rod (14). A rotating shaft (16) whose end is fixedly connected to the detection camera (8) is also rotatably connected to the upper surface of the mounting plate (7) and near the rack (15). A transmission gear (17) meshing with the rack (15) is also fixedly connected to the end face of the rotating shaft (16) that passes through the mounting plate (7) and extends upward.

5. A leakage detection device suitable for water conservancy projects according to claim 1, characterized in that: A water tank (18) and a water pump (19) are fixedly connected to the mounting plate (7). A rotary joint (20) is rotatably connected to the mounting plate (7). The water inlet and outlet of the water pump (19) are provided with connecting water pipes (21) that are respectively connected to the water tank (18) and the rotary joint (20). The outer surface of the rotary joint (20) and the rotating shaft (16) and the top of the mounting plate (7) are fixedly connected with transmission sprockets (22). A transmission chain (23) is provided between the two transmission sprockets (22). A high-pressure nozzle (24) is fixedly connected to the end face of the rotary joint (20) that passes through the mounting plate (7) and extends downward.

6. A leakage detection device suitable for water conservancy projects according to claim 1, characterized in that: The mobile transport vehicle (2) is also fixedly connected to a motor (25) whose output shaft is fixedly connected to one end face of the rotating shaft of the take-up roller (3).

7. A leakage detection device suitable for water conservancy projects according to claim 1, characterized in that: The top of the dam body (1) is also fixedly connected with a protective guide rail (26).

8. A leakage detection device suitable for water conservancy projects according to claim 1, characterized in that: Two hydraulic rods (27) are symmetrically arranged on the outer surface of the mobile transport vehicle (2) near the backwater side of the dam body (1). The telescopic ends of the two hydraulic rods (27) are fixedly connected to the mounting clamps (28). The mounting clamps (28) are rotatably connected to the fixed pulleys (29) for limiting and guiding the traction rope (4).

Images