Underwater dam crack detection device

Abstract

The invention relates to the technical field of dam detection, in particular to an underwater dam crack detection device which comprises a power box, a propeller and a camera detection probe, the propeller is rotationally arranged on one side of the power box, and the camera detection probe is arranged on the other side of the power box; the camera detection probe is arranged in an inclined state, and a balance limiting mechanism for the camera detection probe to scan and detect the dam in a rotary swing mode is arranged between the camera detection probe and the power box. The inner wall of the power box is provided with a power mechanism which drives the camera detection probe to swing rotatably, the balance limiting mechanism to move left and right and the propeller to rotate. Through driving of the power mechanism, it can be guaranteed that rotary swing of the camera shooting detection probe, left-right movement of the balance limiting mechanism and rotation of the propeller are synchronously carried out, scanning detection and sweeping can be carried out on the dam in an omnibearing 360-degree mode through rotary swing, whether the underwater dam has cracks or not is effectively detected, and the detection range is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of dam detection, and in particular to an underwater dam crack detection device. Background Art

[0002] As core infrastructure for the safe operation of water conservancy projects, the structural integrity of underwater dams is directly linked to the fulfillment of crucial functions such as flood control, power generation, and water supply. As dams age and are subjected to complex environmental factors such as water erosion, pressure fluctuations, and geological activity, they are prone to damage such as cracks. If these cracks are not promptly detected and addressed, they will gradually grow and, in severe cases, may even cause catastrophic accidents such as dam failure, resulting in immeasurable damage to the lives and property of people downstream and the ecological environment. Therefore, regular, efficient, and accurate crack detection of underwater dams is crucial for ensuring their safe operation.

[0003] For example, the Chinese patent publication number CN116465898A discloses an underwater dam crack detection device, which uses the flow of marking liquid when marking cracks as power, and utilizes the continuous entry of marking liquid to achieve the descent of the mounting plate, and the expansion of the frame through the descent of the mounting plate. The suction cup at the bottom of the expanded frame is used to directly fix the device, and in the fixed state, the cleaning plate is driven to move forward and backward to clean the area near the suspected crack, avoiding the problem of traditional devices being difficult to judge due to the presence of dirt at the crack, enabling the device to have autonomous cleaning capabilities, reducing the risk of misjudgment of cracks, and achieving high accuracy in crack judgment.

[0004] However, the camera is always in a fixed state. During the scanning and inspection process of the dam, the entire device needs to be moved close to the dam, and the camera is used to detect and determine whether there are cracks in the dam. Then, the position of the crack is marked with a marking liquid. The position of the camera cannot be effectively adjusted, resulting in an extremely limited detection range. It is impossible to perform a full-scale scanning and inspection of the dam. Errors are prone to occur when detecting cracks. Moreover, the movement of the entire device cannot effectively detect blind spots in the underwater dam. The limitations of detecting whether there are cracks in the dam are large, and it is easy to fail to detect them, which reduces the detection efficiency. Therefore, there is an urgent need for an underwater dam crack detection device that can adjust the position of the detection camera probe in multiple directions. Summary of the Invention

[0005] The present invention aims to solve the problems existing in the prior art and provides the following technical solutions: An underwater dam crack detection device comprises a power box, a propeller and a video detection probe, wherein the propeller is rotatably arranged on one side of the power box, and the video detection probe is arranged on the other side of the power box; the video detection probe is arranged in an inclined state, and a balance limit mechanism is provided between the video detection probe and the power box for the video detection probe to rotate and swing to scan and detect the dam, and a cleaning mechanism is provided on the periphery of the video detection probe for cleaning dust on the periphery of the dam; the inner wall of the power box is provided with a power mechanism for driving the video detection probe to rotate and swing, the balance limit mechanism to move left and right, and the propeller to rotate.

[0006] As an improvement of the above technical solution, the balance limit mechanism includes a support component and a balance limit component, the support component includes a support plate, a connecting plate and a first limit swinging component, one side of the support plate is connected to the power mechanism, and the other side is fixedly connected to the connecting plate, the connecting plates are symmetrically arranged on both sides of the support plate, and the adjacent sides of the connecting plates are fixedly connected with guide rods, the first limit swinging component is sleeved outside the guide rod, and a first bearing is arranged between the outer periphery of the guide rod and the first limit swinging component, the outer ring of the first bearing is fixedly connected to the first limit swinging component, and the inner ring is slidingly sleeved on the outer periphery of the guide rod.

[0007] As an improvement of the above technical solution, the balance limit component includes a swing rod, a second limit swing member and a connecting rod. There are two second limit swing members, and they are symmetrically arranged. The second limit swing member is fixedly connected to the first limit swing member in a vertical state. The connecting rod is sleeved in the second limit swing member. A second bearing is fixedly connected between the second limit swing member and the connecting rod. The swing rod is fixedly connected between adjacent ends of the connecting rod in an inclined state. One end of the swing rod is fixedly installed with a camera detection probe, and the other end is fixedly connected to a limit connecting sleeve. A support rod is provided between the limit connecting sleeve and the axis center of the support disk, and the end of the power mechanism is connected to the support rod located at the axis center of the support disk.

[0008] As an improvement of the above technical solution, the cleaning mechanism includes a cleaning brush and a scraper bar. The cleaning brush is rotatably arranged on the periphery of the camera detection probe. The radius of the circumscribed circle of the cleaning brush is larger than the radius of the circumscribed circle of the support plate. The scraper bar is an arc-shaped structure and is sleeved on the periphery of the camera detection probe. The scraper bar is fixedly connected to the cleaning brush.

[0009] As an improvement of the above technical solution, the power mechanism includes a driving component and a linkage component, the driving component includes a first mounting rod, a third bevel gear, a belt, a second mounting rod, a fourth bevel gear and a servo motor, the first mounting rod is rotatably arranged on one side of the inner wall of the power box close to the propeller, the servo motor is fixedly arranged on the other side of the inner wall of the power box, the power output end of the servo motor is fixedly connected to the second mounting rod, one end of the second mounting rod is fixedly connected to the fourth bevel gear, the second mounting rod and the first mounting rod are fixedly connected to the periphery of the roller, the belt is sleeved on the periphery of the roller, and one end of the first mounting rod is fixedly connected to the third bevel gear.

[0010] As an improvement of the above technical solution, the linkage component includes a rotating telescopic rod, a reciprocating screw, a first bevel gear, a support tube, a limiting sleeve and a second bevel gear, one end of the limiting sleeve passes through the power box and is fixedly connected to the propeller, the second bevel gear is fixedly connected to the outer periphery of the limiting sleeve, and the second bevel gear is meshed with the third bevel gear, the rotating telescopic rod is slidably sleeved on the inner wall of the limiting sleeve, one end of the rotating telescopic rod passes through the power box and the support plate and is fixedly connected to the support rod, the reciprocating screw is sleeved on the outer periphery of the rotating telescopic rod, and the reciprocating screw is rotatably connected to the rotating telescopic rod, one end of the reciprocating screw passes through the power box and is fixedly connected to the support plate, the outer periphery of the reciprocating screw is threadedly connected to the first bevel gear, the first bevel gear is rotatably set on the inner wall of the power box through the support tube, the support tube is sleeved on the outer periphery of the reciprocating screw, and the first bevel gear is meshed with the fourth bevel gear.

[0011] As an improvement to the above technical solution, a limiting sealing hole is provided on the other side of the power box for the reciprocating screw to slide left and right.

[0012] As an improvement to the above technical solution, a limiting sliding groove is provided on the periphery of the reciprocating screw, and a sealing limiting sliding strip which is sealingly slidably arranged in the limiting sliding groove is fixedly connected to the inner wall of the limiting sealing hole.

[0013] As an improvement to the above technical solution, the radius of the circumscribed circle of the first bevel gear is greater than the radius of the circumscribed circle of the fourth bevel gear, and the radius of the circumscribed circle of the second bevel gear is the same as the radius of the circumscribed circle of the third bevel gear.

[0014] Beneficial effects of the present invention: Driven by the power mechanism, the rotational swing of the video detection probe, the left and right movement of the balance limit mechanism and the rotation of the propeller can be ensured to be carried out synchronously, so that the video detection probe can drive the cleaning mechanism to slide left and right, and the rotational swing can scan and detect the dam in all directions 360°, and can also clean the dam during the detection process to ensure the cleanliness of the dam. It can not only detect the blind spots of the underwater dam, but also enable the video detection probe to penetrate into the gate of the underwater dam for detection, effectively detect whether there are cracks in the underwater dam, and improve the detection range. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cutaway structure of the present invention; Figure 3 An enlarged view of the positional relationship between the first mounting rod and the second mounting rod of the present invention; Figure 4 This is an enlarged view of the positional relationship between the camera detection probe and the support plate of the present invention; Figure 5 This is a schematic diagram of the power box structure of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of area A in the middle; Figure 7 This is an enlarged view of the connection structure between the rotating telescopic rod and the support rod of the present invention.

[0016] Figure numerals: 1, power box; 11, propeller; 12, limit sealing hole; 121, sealing limit slide; 2, support plate; 21, connecting plate; 211, guide rod; 3, camera detection probe; 31, swing rod; 32, cleaning brush; 33, scraper; 4, first limit swing member; 41, first bearing; 5, second limit swing member; 51, second bearing; 511, connecting rod; 6, rotating telescopic rod; 61, support rod; 611, limit connecting sleeve; 62, reciprocating screw; 621, limit slide; 622, first bevel gear; 623, support tube; 63, limit sleeve; 631, second bevel gear; 7, first mounting rod; 71, third bevel gear; 72, roller; 721, belt; 8, second mounting rod; 81, fourth bevel gear; 82, servo motor. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] Please refer to Figure 1-Figure 7As shown, the present invention provides an underwater dam crack detection device, comprising a power box 1, a propeller 11, and a camera detection probe 3. The propeller 11 is rotatably arranged on one side of the power box 1, and the camera detection probe 3 is arranged on the other side of the power box 1. The video detection probe 3 is arranged in an inclined state. A balance limit mechanism is provided between the video detection probe 3 and the power box 1 for the video detection probe 3 to rotate and swing to scan the dam. A cleaning mechanism is provided on the periphery of the video detection probe 3 for cleaning dust on the periphery of the dam. The inner wall of the power box 1 is provided with a power mechanism for driving the camera detection probe 3 to rotate and swing, the balance limit mechanism to move left and right, and the propeller 11 to rotate.

[0019] In this case, the camera detection probe 3 can be rotated 360 degrees by the rotational swing of the camera detection probe 3, and Figure 1 and Figure 4 The tilt state of the video detection probe 3 can be seen in the figure, which enables the video detection probe 3 to rotate 360 degrees and improves the range of its scanning detection.

[0020] Among them, the power mechanism can drive the balance limit mechanism to move left and right, and the camera detection probe 3 is arranged on the balance limit mechanism. Therefore, when the balance limit mechanism is in the left and right moving state, it can drive the camera detection probe 3 to slide left and right. Combined with the rotational swing of the camera detection probe 3, the position of the camera detection probe 3 can be changed in all directions. When it is necessary to detect the blind spot of the underwater dam, the left and right sliding of the camera detection probe 3 can make it close to the blind spot, and then the rotational swing can effectively scan and detect the blind spot, and the detection range is wider.

[0021] Among them, a power mechanism is provided on the inner wall of the power box 1 to drive the video detection probe 3 to rotate and swing, the balance limit mechanism to move left and right, and the propeller 11 to rotate. Through the power mechanism, the video detection probe 3 can be in a telescopic movement and a rotational and swinging movement at the same time, and can drive the propeller 11 to rotate, thereby realizing a full-range scanning and detection of the underwater dam during the movement of the power box 1.

[0022] Supplement: A steering rudder is provided on the power box 1 below the propeller 11, which is used to change the direction of the power box 1 underwater so that it moves in the direction required for detection. The steering rudder is not drawn in the accompanying drawings. It belongs to the mature existing technology, so no further details will be given here.

[0023] Among them, the left and right sliding and rotational swing of the video detection probe 3 provided by the present invention, and the rotation of the propeller 11 are synchronous. Considering the influence of synchronous movement on dam cleaning, the power box 1 is moved by the rotation of the propeller 11 when in use. The rotation of the propeller 11 can change the moving direction of the power box 1. Therefore, the propeller 11 cooperates with the steering rudder to realize the multi-directional movement of the power box 1, which can move horizontally left and right, vertically up and down, and tilted. The movement speed of the power box 1 can also be guaranteed by the rotation of the propeller 11. This all belongs to the prior art, and its movement speed and movement process will not be described in detail here. When the power box 1 is in the moving state, When the camera detection probe 3 is in a dynamic state, it will not affect the movement of the camera detection probe 3. When the camera detection probe 3 is telescopically rotated and swung, the power box 1 can ensure horizontal movement. Therefore, when the power box 1 is driven by the propeller 11 to move underwater, it will not affect the movement of the camera detection probe 3. When the propeller 11 is in a rotating state, the camera detection probe 3 can be in a reciprocating movement process. During the reciprocating movement, since the cleaning mechanism is arranged on the camera detection probe 3, the dam can be cleaned by the cleaning mechanism, and in the process of cleaning the dam, the camera detection probe 3 can be used to scan and detect whether there are cracks on the dam, and the cleaning and detection state can be performed to improve the detection efficiency.

[0024] Among them, through the drive of the power mechanism, the rotational swing of the video detection probe 3, the left and right movement of the balance limit mechanism and the rotation of the propeller 11 can be ensured to be carried out synchronously, so that the video detection probe 3 can drive the cleaning mechanism to slide left and right, and the rotational swing can scan and detect the dam in all directions 360°, and can also clean the dam during the detection process to ensure the cleanliness of the dam. It can not only detect the blind spots of the underwater dam, but also enable the video detection probe 3 to penetrate into the gate of the underwater dam for detection, effectively detect whether there are cracks in the underwater dam, and improve the detection range.

[0025] like Figure 1 and Figure 4 As shown, the balance limit mechanism includes a supporting component and a balance limit component. The supporting component includes a supporting disk 2, a connecting plate 21 and a first limit swinging component 4. One side of the support disk 2 is connected to the power mechanism, and the other side is fixedly connected to the connecting plate 21. The connecting plates 21 are symmetrically arranged on both sides of the support disk 2. The adjacent sides of the connecting plates 21 are fixedly connected with guide rods 211. The first limit swinging component 4 is sleeved on the outside of the guide rod 211. A first bearing 41 is arranged between the outer periphery of the guide rod 211 and the first limit swinging component 4. The outer ring of the first bearing 41 is fixedly connected to the first limit swinging component 4, and the inner ring is slidingly sleeved on the outer periphery of the guide rod 211.

[0026] The balance limit component includes a swing rod 31, a second limit swing member 5 and a connecting rod 511. There are two second limit swing members 5, and they are symmetrically arranged. The second limit swing member 5 is fixedly connected to the first limit swing member 4 in a vertical state. The connecting rod 511 is sleeved in the second limit swing member 5. A second bearing 51 is fixedly connected between the second limit swing member 5 and the connecting rod 511. The swing rod 31 is fixedly connected between adjacent ends of the connecting rod 511 in an inclined state. One end of the swing rod 31 is fixedly installed with the camera detection probe 3, and the other end is fixedly connected to the limit connecting sleeve 611. A support rod 61 is arranged between the limit connecting sleeve 611 and the axis center of the support plate 2, and the end of the power mechanism is connected to the support rod 61 located at the axis center of the support plate 2.

[0027] By starting the power mechanism, and the end of the power mechanism is connected to the support rod 61 located at the axis of the support plate 2, the power mechanism can drive the support rod 61 to rotate, so that the support rod 61 rotates around the axis of the support plate 2. Figure 4 The setting state of the support rod 61 can be seen in the figure. It is divided into two sections, namely the horizontal section and the inclined section. This setting has the effect of swinging rotation. The support rod 61 rotates around the axis of the support disk 2. The axis of the support disk 2 is defined as the center of the circle below. The center of the circle is described as the axis of the support disk 2, which can drive the limiting connecting sleeve 611 to rotate around the center of the circle. Due to the inclined setting of the swing rod 31, when the limiting connecting sleeve 611 rotates, it can drive the swing rod 31 to be in a rotational swinging state. The swing of the swing rod 31 can drive the connecting rod 511 Swinging up and down, the connecting rod 511 drives the second bearing 51 and the second limiting swing member 5 to swing, and the second limiting swing member 5 drives the first limiting swing member 4 to move. Under the limiting action of the first bearing 41, the first limiting swing member 4 can slide back and forth on the periphery of the guide rod 211, and the reciprocating sliding distance is relatively short, ensuring the swinging effect of the swing rod 31 between the adjacent first limiting swing member 4 and the second limiting swing member 5, thereby driving the camera detection probe 3 fixed at the end of the swing rod 31 to perform rotational swing, and perform all-round 360° scanning detection.

[0028] In the attached Figure 4The specific structure of the camera detection probe 3 is shown. The camera detection probe 3 can be put into a swinging state through the action of the swing rod 31, and the upper and lower heights of the camera detection probe 3 can be changed during the swinging process, which can increase the range of its scanning and detection. Through the 360° swinging rotation, the blind spot can be effectively scanned and detected, and the water can be stirred underwater through the swinging of the camera detection probe 3, thereby accelerating the flow of water and flowing toward the camera detection probe 3, which facilitates the convergence of the marking liquid when marking cracks, so that the marking liquid can be attached to the detected cracks. The position of the marking liquid and the marking liquid storage box are not drawn in this application document. The process of releasing the marking liquid belongs to the existing technology. Releasing the marking liquid when a crack is detected or suspected is all existing technology. The process of how to release the marking liquid will not be described in detail here.

[0029] Supplementary explanation: The marking liquid release box can be set on the periphery of the power box 1, and can be set on the power box 1 near the camera detection probe 3. When a crack is detected, the marking liquid is released through the marking liquid release box. Under the action of the camera detection probe 3, the water can be stirred to make the water converge toward the camera detection probe 3. At this time, the camera detection probe 3 is close to the crack, which is convenient for the marking liquid to mark the crack, can save the release of the marking liquid, avoid large-scale release of the marking liquid and cause more waste, and has the effect of saving resources.

[0030] like Figure 4 As shown, the cleaning mechanism includes a cleaning brush 32 and a scraper bar 33. The cleaning brush 32 is rotatably arranged on the periphery of the camera detection probe 3. The radius of the circumscribed circle of the cleaning brush 32 is larger than the radius of the circumscribed circle of the support plate 2. The scraper bar 33 is an arc-shaped structure and is sleeved on the periphery of the camera detection probe 3. The scraper bar 33 is fixedly connected to the cleaning brush 32.

[0031] The scraper 33 is provided to scrape off the attachments attached to the periphery of the camera detection probe 3. Figure 4As shown, the camera detection probe 3 is set as a semicircular structure, and the cleaning brush 32 is a disc-shaped structure that is rotatably sleeved on the periphery of the camera detection probe 3. By setting the circumscribed circle of the cleaning brush 32 to be larger than the radius of the circumscribed circle of the support plate 2, it is convenient to go deep into different positions of the dam when cleaning the dam underwater, thereby improving the detection range. At the same time, by the rotation setting of the cleaning brush 32, the camera detection probe 3 rotates and swings underwater, which can change the center of gravity direction of the camera detection probe 3. During the underwater rotation process, the camera detection probe 3 can be made to rotate due to the resistance of water. It is in a rotating state, and when cleaning the dam, friction will be generated between the cleaning brush 32 and the dam, and the dam will be cleaned by the friction force. Under the action of the friction force, the cleaning brush 32 can also be in a rotating state. When the cleaning brush 32 is in a rotating state outside the camera detection probe 3, it can drive the scraping bar 33 to be in a rotating state, so that the scraping bar 33 can rotate around the periphery of the camera detection probe 3, and scrape off the attached objects on the periphery of the camera detection probe 3, thereby ensuring the cleanliness of the camera detection probe 3 to prevent it from affecting the scanning detection.

[0032] like Figure 2 and Figure 3 As shown, the power mechanism includes a driving component and a linkage component. The driving component includes a first mounting rod 7, a third bevel gear 71, a belt 721, a second mounting rod 8, a fourth bevel gear 81 and a servo motor 82. The first mounting rod 7 is rotatably arranged on one side of the inner wall of the power box 1 near the propeller 11, and the servo motor 82 is fixedly arranged on the other side of the inner wall of the power box 1. The power output end of the servo motor 82 is fixedly connected to the second mounting rod 8, and one end of the second mounting rod 8 is fixedly connected to the fourth bevel gear 81. The second mounting rod 8 and the first mounting rod 7 are both fixedly connected to the periphery of the roller 72. The belt 721 is sleeved on the periphery of the roller 72, and one end of the first mounting rod 7 is fixedly connected to the third bevel gear 71.

[0033] The linkage components include a rotating telescopic rod 6, a reciprocating screw 62, a first bevel gear 622, a support tube 623, a limiting sleeve 63 and a second bevel gear 631. One end of the limiting sleeve 63 passes through the power box 1 and is fixedly connected to the propeller 11. The second bevel gear 631 is fixedly connected to the periphery of the limiting sleeve 63, and the second bevel gear 631 is meshed with the third bevel gear 71. The rotating telescopic rod 6 is slidably sleeved on the inner wall of the limiting sleeve 63. One end of the rotating telescopic rod 6 passes through the power box 1 and the support tube 623. The support plate 2 is fixedly connected to the support rod 61, the reciprocating screw 62 is sleeved on the periphery of the rotating telescopic rod 6, and the reciprocating screw 62 is rotatably connected to the rotating telescopic rod 6, one end of the reciprocating screw 62 passes through the power box 1 and is fixedly connected to the support plate 2, the periphery of the reciprocating screw 62 is threadedly connected to the first bevel gear 622, the first bevel gear 622 is rotatably set on the inner wall of the power box 1 through the support tube 623, the support tube 623 is sleeved on the periphery of the reciprocating screw 62, and the first bevel gear 622 is meshed with the fourth bevel gear 81.

[0034] The start of the servo motor 82 can drive the second mounting rod 8 to rotate, and the first mounting rod 7 can be in a rotating state under the action of the roller 72 and the belt 721, thereby driving the third bevel gear 71 and the fourth bevel gear 81 to rotate, the third bevel gear 71 drives the second bevel gear 631 to rotate, the second bevel gear 631 drives the limiting sleeve 63 to rotate, the limiting sleeve 63 drives the propeller 11 to rotate, and the rotating telescopic rod 6 is slidably set in the limiting sleeve 63. The rotation of the limiting sleeve 63 can drive the rotating telescopic rod 6 to rotate. One end of the rotating telescopic rod 6 is fixedly connected to the support rod 61, so the rotating telescopic rod 6 can drive the support rod 61 to rotate, and the rotation of the support rod 61 can make The video detection probe 3 is in a rotating and swinging state. At the same time, the rotation of the fourth bevel gear 81 can drive the first bevel gear 622 to rotate. The first bevel gear 622 is threadedly connected to the reciprocating screw 62. Therefore, the rotation of the first bevel gear 622 can make the reciprocating screw 62 slide left and right. The reciprocating screw 62 drives the support plate 2 to move left and right, and can drive the rotating telescopic rod 6 to slide left and right in the limiting sleeve 63. Since the rotating telescopic rod 6 is rotationally connected to the reciprocating screw 62, the rotation of the rotating telescopic rod 6 will not drive the reciprocating screw 62 to be in a rotating state, thereby realizing the left and right sliding rotation and swinging of the video detection probe 3, and performing a full-scale 360° scanning and detection of the dam.

[0035] The movement of the power box 1 can be achieved by simply starting the servo motor 82, and the camera detection probe 3 can be in a state of horizontal movement and rotational swing, so as to perform an all-round scanning and detection of the dam, which has the effect of energy saving.

[0036] Supplementary explanation: The reciprocating screw 62 is a device commonly used in the prior art that rotates in one direction to make the equipment mounted on its periphery move back and forth, so its peripheral threads are not drawn in the accompanying drawings. It belongs to the mature prior art, so its specific principle will not be described in detail in the present invention.

[0037] like Figure 5 、 Figure 6 and Figure 7 As shown, a limiting sealing hole 12 is provided on the other side of the power box 1 for the reciprocating screw 62 to slide left and right.

[0038] A limiting sliding groove 621 is provided on the periphery of the reciprocating screw 62 , and a sealing limiting sliding strip 121 sealingly slidingly arranged in the limiting sliding groove 621 is fixedly connected to the inner wall of the limiting sealing hole 12 .

[0039] Through the setting of the sealing limit slide 121, when the reciprocating screw 62 drives the support plate 2 to move, the sealing limit slide 121 can seal the limit slide 621 opened on the periphery of the reciprocating screw 62, preventing water from entering the power box 1 along the limit slide 621, thereby achieving the closure of the interior of the power box 1, and the sealing limit slide 121 can limit the reciprocating screw 62, preventing the reciprocating screw 62 from rotating with the rotation of the first bevel gear 622, thereby ensuring that it is in a state of horizontal reciprocating movement.

[0040] Supplementary explanation: The power box 1 is provided with an inspection door, which is not shown in the attached drawings. The inspection door is sealed on the power box 1 and can ensure that external water does not enter the power box 1 when it is in the closed state.

[0041] like Figure 2 and Figure 3 As shown, the circumscribed circle radius of the first bevel gear 622 is greater than the circumscribed circle radius of the fourth bevel gear 81 , and the circumscribed circle radius of the second bevel gear 631 is the same as the circumscribed circle radius of the third bevel gear 71 .

[0042] Among them, by setting the second bevel gear 631 and the third bevel gear 71 to have the same circumscribed circle radius, the propeller 11 and the camera detection probe 3 can be synchronized. When the propeller 11 rotates, the camera detection probe 3 is in a rotational swinging movement. By setting the circumscribed circle radius of the first bevel gear 622 to be larger than the circumscribed circle radius of the fourth bevel gear 81, the camera detection probe 3 can be slowly telescopically moved. The advantage of adopting this design method is that it facilitates the contact between the cleaning brush 32 and the dam; the camera detection probe 3 can change the direction of the cleaning brush 32 when swinging. When the cleaning brush 32 swings to different positions, the slow movement of the reciprocating screw 62 can ensure the contact between the cleaning brush 32 and the dam, and the power box 1 is in a moving state, so that the cleaning brush 32 can be ensured to be in constant contact with the dam during the cleaning process, ensuring that the dam is detected for cracks during the cleaning process.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. An underwater dam crack detection device, comprising a power box (1), a propeller (11) and a camera detection probe (3), wherein the propeller (11) is rotatably arranged on one side of the power box (1), and the camera detection probe (3) is arranged on the other side of the power box (1), characterized in that: The video detection probe (3) is arranged in an inclined state, and a balance limit mechanism is provided between the video detection probe (3) and the power box (1) for the video detection probe (3) to rotate and swing to scan and detect the dam, and a cleaning mechanism for cleaning dust outside the dam is provided on the periphery of the video detection probe (3); The inner wall of the power box (1) is provided with a power mechanism for driving the camera detection probe (3) to rotate and swing, the balance limit mechanism to move left and right, and the propeller (11) to rotate.

2. The underwater dam crack detection device according to claim 1, characterized in that: The balance limiting mechanism includes a supporting component and a balance limiting component, wherein the supporting component includes a supporting plate (2), a connecting plate (21) and a first limiting swinging member (4), wherein one side of the supporting plate (2) is connected to the power mechanism, and the other side is fixedly connected to the connecting plate (21), wherein the connecting plates (21) are symmetrically arranged on both sides of the supporting plate (2), and adjacent sides of the connecting plates (21) are fixedly connected to guide rods (211), wherein the first limiting swinging member (4) is sleeved outside the guide rod (211), and a first bearing (41) is arranged between the outer periphery of the guide rod (211) and the first limiting swinging member (4), wherein the outer ring of the first bearing (41) is fixedly connected to the first limiting swinging member (4), and the inner ring is slidably sleeved outside the guide rod (211).

3. The underwater dam crack detection device according to claim 2, characterized in that: The balance limit component includes a swing rod (31), a second limit swing member (5) and a connecting rod (511), two second limit swing members (5) are provided and symmetrically arranged, the second limit swing member (5) is fixedly connected to the first limit swing member (4) in a vertical state, the connecting rod (511) is sleeved in the second limit swing member (5), a second bearing (51) is fixedly connected between the second limit swing member (5) and the connecting rod (511), the swing rod (31) is fixedly connected between adjacent ends of the connecting rod (511) in an inclined state, one end of the swing rod (31) is fixedly installed with the camera detection probe (3), and the other end is fixedly connected to the limit connecting sleeve (611), a support rod (61) is provided between the limit connecting sleeve (611) and the axis of the support plate (2), and the end of the power mechanism is connected to the support rod (61) located at the axis of the support plate (2).

4. The underwater dam crack detection device according to claim 3, characterized in that: The cleaning mechanism comprises a cleaning brush (32) and a scraping strip (33), wherein the cleaning brush (32) is rotatably arranged on the periphery of the camera detection probe (3), the radius of the circumscribed circle of the cleaning brush (32) is greater than the radius of the circumscribed circle of the support plate (2), and the scraping strip (33) is an arc-shaped structure sleeved on the periphery of the camera detection probe (3), and the scraping strip (33) is fixedly connected to the cleaning brush (32).

5. The underwater dam crack detection device according to claim 3, characterized in that: The power mechanism includes a driving component and a linkage component, wherein the driving component includes a first mounting rod (7), a third bevel gear (71), a belt (721), a second mounting rod (8), a fourth bevel gear (81) and a servo motor (82), wherein the first mounting rod (7) is rotatably arranged on one side of the inner wall of the power box (1) near the propeller (11), and the servo motor (82) is fixedly arranged on the other side of the inner wall of the power box (1), a power output end of the servo motor (82) is fixedly connected to the second mounting rod (8), one end of the second mounting rod (8) is fixedly connected to the fourth bevel gear (81), the outer peripheries of the second mounting rod (8) and the first mounting rod (7) are fixedly connected to rollers (72), the belt (721) is sleeved on the outer periphery of the rollers (72), and one end of the first mounting rod (7) is fixedly connected to the third bevel gear (71).

6. The underwater dam crack detection device according to claim 5, characterized in that: The linkage component comprises a rotating telescopic rod (6), a reciprocating screw (62), a first bevel gear (622), a support tube (623), a limiting sleeve (63) and a second bevel gear (631). One end of the limiting sleeve (63) passes through the power box (1) and is fixedly connected to the propeller (11). The second bevel gear (631) is fixedly connected to the periphery of the limiting sleeve (63), and the second bevel gear (631) is meshed with the third bevel gear (71). The rotating telescopic rod (6) is slidably sleeved on the inner wall of the limiting sleeve (63) left and right. One end of the rotating telescopic rod (6) passes through the power box (1) and the support plate. (2) is fixedly connected to the support rod (61), the reciprocating screw (62) is sleeved on the periphery of the rotating telescopic rod (6), and the reciprocating screw (62) is rotatably connected to the rotating telescopic rod (6), one end of the reciprocating screw (62) passes through the power box (1) and is fixedly connected to the support plate (2), the periphery of the reciprocating screw (62) is threadedly connected to the first bevel gear (622), the first bevel gear (622) is rotatably set on the inner wall of the power box (1) through the support tube (623), the support tube (623) is sleeved on the periphery of the reciprocating screw (62), and the first bevel gear (622) is meshed with the fourth bevel gear (81).

7. The underwater dam crack detection device according to claim 6, characterized in that: A limiting sealing hole (12) is provided on the other side of the power box (1) for the reciprocating screw (62) to slide left and right.

8. The underwater dam crack detection device according to claim 7, characterized in that: A limiting sliding groove (621) is provided on the periphery of the reciprocating screw (62), and a sealing limiting sliding strip (121) is fixedly connected to the inner wall of the limiting sealing hole (12) and is sealingly slidably arranged in the limiting sliding groove (621).

9. The underwater dam crack detection device according to claim 6, characterized in that: The radius of the circumscribed circle of the first bevel gear (622) is greater than the radius of the circumscribed circle of the fourth bevel gear (81), and the radius of the circumscribed circle of the second bevel gear (631) is the same as the radius of the circumscribed circle of the third bevel gear (71).

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