Water conservancy project dam body crack detection device

Abstract

The invention discloses a dam body crack detection device for a water conservancy project, belongs to the field of dam body detection, and aims to solve the problems that a camera cannot clearly capture the edge of a crack due to the shielding of a root, so that measured width data deviates; the dam body crack detection device solves the problems that when the length of a crack is measured, if the root portion crosses the crack, judgment of a camera on crack continuity can be interfered, length measurement is inaccurate, crack data obtained through measurement of an industrial camera cannot truly reflect the actual condition of the dam body crack, and accurate evaluation on dam body safety is seriously affected. Comprising a box body, rolling wheels arranged on the outer side of the lower portion of the box body and an industrial camera arranged on the inner side of the lower portion of the box body, a rotating mechanism is arranged below the industrial camera, and a pushing mechanism is arranged below the rotating mechanism. Therefore, the measurement accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of dam body detection, and in particular to a device for detecting cracks in a dam body of a water conservancy project. Background Art

[0002] Water conservancy project dam crack detection devices are a series of specialized equipment used to accurately identify, measure, and analyze parameters related to dam cracks, thereby assessing the dam's safety status. These devices offer diverse functions, covering every step from crack detection to detailed characterization, and play an indispensable role in ensuring the stable operation of water conservancy projects.

[0003] Announcement No. CN118483236B provides a water conservancy project dam crack detection device, including: a frame assembly and a detection assembly; the frame assembly includes a carriage, one end of the carriage is connected to a symmetrical hanging ring, the carriage is connected to two groups of symmetrical mounting blocks, each of the mounting blocks is respectively connected to a guide cross bar; the detection assembly includes a U-plate, the U-plate is provided with two groups of symmetrical straight grooves, the U-plate is connected to symmetrical guide vertical rods, the symmetrical guide vertical rods respectively pass through the bottom plate of the carriage and are arranged in the carriage, the U-plate is connected to two groups of symmetrical vertical round rods, each of the vertical round rods respectively passes through the inner slide groove.

[0004] Dam cracks are a common and potentially detrimental hazard that seriously threatens dam stability. Timely and accurate detection of dam cracks is crucial for effectively assessing dam safety and developing scientific maintenance strategies. In actual inspection scenarios, weeds growing on the dam's surface and in cracks pose a significant challenge. The dam's natural environment provides favorable conditions for weed growth. The dam's long-term exposure to the elements creates accumulated dust and humus on its surface, providing nutrients for weed growth. Frequent rainfall and infiltration satisfy the weeds' water needs. Furthermore, wind-driven weed seeds are widely spread, and birds and other animals accidentally carry seeds to the dam, allowing weeds to grow freely on the dam's surface and in its cracks.

[0005] To facilitate the detection of cracks on the dam body, the device often uses a tool to clear weeds from the dam body surface. Tool cleaning has the advantages of being easy to operate and quickly opening up a detection surface when dealing with large areas of surface weeds, which to a certain extent creates basic conditions for detection work. However, when faced with weeds growing within the cracks, this method exposes obvious flaws. Dam body cracks vary in shape, are narrow in space, and have complex directions. Limited by the irregular structure of the cracks, the tool cannot penetrate deep into the roots for thorough removal. Most tools can only remove the visible weeds above the crack mouth, resulting in a large number of weed roots remaining inside the cracks. Residual weed roots seriously interfere with dam crack detection using industrial cameras, significantly impacting the accuracy of measurement data. Industrial cameras, with their high-resolution imaging and non-contact measurement capabilities, undertake key tasks in dam crack detection, such as obtaining intuitive images of cracks and accurately measuring crack dimensions. However, weed roots remaining within cracks can obscure portions of the cracks during camera capture. When the camera measures crack width, the obstruction caused by the roots prevents the camera from clearly capturing the crack edge, resulting in deviations in the measured width data. When measuring crack length, if the roots span the crack, they interfere with the camera's assessment of crack continuity, resulting in inaccurate length measurements. The crack data measured by the industrial camera cannot truly reflect the actual condition of the dam cracks, severely impacting the accurate assessment of dam safety.

[0006] In order to solve the above problems, a device for detecting cracks in a dam body of a water conservancy project is proposed. Summary of the Invention

[0007] The purpose of the present invention is to provide a device for detecting cracks in a dam body of a water conservancy project, which solves the problem of affecting the accurate assessment of the safety of the dam body.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for detecting cracks in a dam body of a water conservancy project, comprising a box body, a roller being provided on the outer side of the lower side of the box body, an industrial camera being installed on the inner side of the lower side of the box body, and a rotating mechanism and a pushing mechanism being connected in sequence below the industrial camera; The rotating mechanism is composed of a steering assembly and a fixed assembly, and the fixed assembly surrounds the outside of the steering assembly. The pushing mechanism includes a reciprocating assembly and a clamping assembly, and the clamping assembly is located on one side of the reciprocating assembly. The steering assembly includes a first support plate fixed to the middle portion of the lower portion of the box body, one end of the first support plate is connected to the outer side of the motor, the output end of the motor is connected to the threaded rod, the outer thread of the threaded rod is connected to the second support plate, the second support plate is rotatably connected to the first rotating disk, and the second support plate is rotatably connected to the first rotating disk. The upper end of the first rotating disk is provided with a first groove, and the upper end of the first rotating rod is fixed with a gear in the first groove. The outer end of the first rotating rod is sleeved with a first guide rod on the upper inner side of the first support plate for the first guide rod to be nested. A first guide groove is provided for the first guide rod to be nested on the upper inner side of the first support plate, and one end of the box body is fixed with the first rack and the second rack. The lower end of the first rotating disk is connected to the first elastic telescopic rod, and the inner end of the lower end of the first elastic telescopic rod is connected to the push plate through the first torsion spring. A water spray head connected to the first rotating disk is provided in the first elastic telescopic rod, and a clamping plate is provided between the water spray head and the first elastic telescopic rod.

[0009] Preferably, the inner side surface of the first groove fits with the outer side surface of the lower end of the first rotating rod, and the appearance structure shape of the lower end of the first rotating rod is a cuboid, and the appearance structure shape of the upper end of the first rotating rod is a cylinder.

[0010] Preferably, point a is provided on the outside of one end of the first guide groove, and point b is provided on the inside of one end of the first guide groove, point c is provided on the outside of the other end of the first guide groove, and point d is provided on the inside of the other end of the first guide groove, the vertical height of point a of the first guide groove is higher than the vertical height of point b of the first guide groove, and the vertical height of point c of the first guide groove is lower than the vertical height of point d of the first guide groove.

[0011] Preferably, the lengths of the first rack and the second rack are both half the circumference of the gear, and the teeth of the first rack and the second rack are opposite to each other.

[0012] Preferably, two first elastic telescopic rods are provided, and the central axes of the first elastic telescopic rods are perpendicular to the lower surface of the first rotating disk.

[0013] Preferably, the fixing assembly includes a second rotating disk fixedly connected to the inside of the gear, a first limiting groove is provided on the upper surface of the second rotating disk, a first limiting rod fixedly connected to the box body is provided above the first limiting groove, a second limiting rod fixedly connected to the inner side of the first support plate, a spring is fixedly connected to the lower end of the first rotating rod, and a second limiting groove is provided on the lower surface of the second rotating disk.

[0014] Preferably, a second guide groove is provided below both ends of the inner side of the first support plate, the reciprocating assembly includes a second guide rod arranged inside the second guide groove, one end of the second guide rod is fixedly connected to a sliding sleeve, a second groove is provided inside the lower part of the first rotating disk, and a connecting plate fixedly connected to the sliding sleeve is provided inside the second groove.

[0015] Preferably, the appearance structure of the middle end of the second guide groove is wavy, and the appearance structure of both ends of the second guide groove is horizontal straight, and the groove depth of the horizontal straight groove of the second guide groove is greater than the groove depth of the wavy groove of the second guide groove.

[0016] Preferably, the external structure of the connecting plate is a rectangular parallelepiped, and the central axis of the connecting plate is perpendicular to the lower surface of the first rotating disk.

[0017] Preferably, the clamping assembly includes a first fixed plate fixedly connected to the lower surface of the first rotating disk, the first fixed plate is provided with a third guide groove inside, the upper outer side of the third guide groove is provided with a point e, the upper inner side of the third guide groove is provided with a point f, the lower outer side of the third guide groove is provided with a point h, the lower inner side of the third guide groove is provided with a point e, the point e of the third guide groove is farther away from the vertical center axis of the first fixed plate than the point f of the third guide groove, and the point g of the third guide groove is closer to the vertical center axis of the first fixed plate than the point h of the third guide groove, the inner side of the third guide groove is provided with a third guide rod, the inner side of the sliding sleeve is fixedly connected to the second fixed plate, the inner side of the second fixed plate is provided with a hole, the inner side of the hole is slidably connected to the second elastic telescopic rod, the lower end of the second elastic telescopic rod is fixedly connected to the second torsion spring, the connection method of the second torsion spring and the clamping plate is a fixed connection, and two second elastic telescopic rods are provided.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: a water conservancy project dam crack detection device provided by the present invention is provided with a rotating mechanism, so that when the rotating mechanism rotates, weeds in the cracks can be pulled out. Compared with the prior art, the soil and weeds are pushed away from the cracks, and the industrial camera takes clearer pictures, thereby improving the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the left side cross-sectional structure of the first support plate of the present invention; Figure 3 This is a schematic diagram of the appearance structure of the second guide groove of the present invention; Figure 4 This is a schematic diagram of the front cross-sectional structure of the box body of the present invention; Figure 5 It is a schematic diagram of the right side structure of the first guide groove of the present invention; Figure 6 It is a schematic diagram of the structure of the third guide groove from the right side of the present invention; Figure 7 For the present invention Figure 2 Schematic diagram of the structure at A in the middle; Figure 8 For the present invention Figure 3 Schematic diagram of the structure at B in the middle; Figure 9 For the present invention Figure 4 Schematic diagram of the structure at C in the middle; Figure 10 For the present invention Figure 4 Schematic diagram of the structure at D in the middle; Figure 11 It is a schematic cross-sectional structural diagram of the water sprinkler head of the present invention.

[0020] In the figure: 1. housing; 2. roller; 3. industrial camera; 4. rotating mechanism; 5. pushing mechanism; 41. steering assembly; 42. fixing assembly; 51. reciprocating assembly; 52. clamping assembly; 4101. first support plate; 4102. motor; 4103. threaded rod; 4104. second support plate; 4105. first rotating disk; 4106. first groove; 4107. first rotating rod; 4108. gear; 4109. first guide rod; 4110. first guide groove; 4111. first rack; 4112. second rack; 4113. first elastic telescopic rod; 4114. first torsion spring; 4115, push plate; 4116, water spray head; 4117, clamping plate; 4201, second rotating disk; 4202, first limiting groove; 4203, first limiting rod; 4204, second limiting rod; 4205, spring; 4206, second limiting groove; 6, second guide groove; 5101, second guide rod; 5102, sliding sleeve; 5103, second groove; 5104, connecting plate; 5201, first fixed plate; 5202, third guide groove; 5203, third guide rod; 5204, second fixed plate; 5205, hole; 5206, second elastic telescopic rod; 5207, second torsion spring. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-11 The present invention provides a technical solution: a device for detecting cracks in a dam body of a water conservancy project, comprising a box body 1, a roller 2 is provided on the outer side of the lower side of the box body 1, an industrial camera 3 is installed on the inner side of the lower side of the box body 1, and a rotating mechanism 4 and a pushing mechanism 5 are connected in sequence below the industrial camera 3; The rotating mechanism 4 is composed of a steering assembly 41 and a fixed assembly 42, and the fixed assembly 42 surrounds the outside of the steering assembly 41. The pushing mechanism 5 includes a reciprocating assembly 51 and a clamping assembly 52, and the clamping assembly 52 is located on one side of the reciprocating assembly 51. The steering assembly 41 includes a first support plate 4101 fixed to the middle of the lower part of the box body 1, one end of the first support plate 4101 is connected to the outer side of the motor 4102, the output end of the motor 4102 is connected to the threaded rod 4103, the threaded rod 4103 is externally threadedly connected to the second support plate 4104, the second support plate 4104 slides with the first support plate 4101, the second support plate 4104 is internally rotatably connected to the first rotating disk 4105, the upper end of the first rotating disk 4105 is provided with a first groove 4106, the upper end of the first rotating rod 4107 in the first groove 4106 is fixed with a gear 4108, the inner side surface of the first groove 4106 is in contact with the outer side surface of the lower end of the first rotating rod 4107, The lower end of the first rotating rod 4107 has a rectangular parallelepiped appearance, and the upper end of the first rotating rod 4107 has a cylindrical appearance, so that the first rotating rod 4107 does not rotate when it moves inside the first groove 4106. A first guide rod 4109 is sleeved on the outside of the first rotating rod 4107. A first guide groove 4110 for the first guide rod 4109 to be nested is provided on the upper inner side of the first support plate 4101. Point a is provided on the outside of one end of the first guide groove 4110, and point b is provided on the inside of one end of the first guide groove 4110. Point c is provided on the outside of the other end of the first guide groove 4110, and point d is provided on the inside of the other end of the first guide groove 4110. The vertical height of point 110a is higher than the vertical height of point 4110b of the first guide groove, and the vertical height of point 4110c of the first guide groove is lower than the vertical height of point 4110d of the first guide groove, so that when the first guide rod 4109 moves to the position of point 4110a of the first guide groove and moves back, it can move to the lower interior of the first guide groove 4110, and when the first guide rod 4109 moves to the position of point 4110c of the first guide groove and moves back, it can move to the upper interior of the first guide groove 4110. A first rack 4111 and a second rack 4112 are fixed to one end of the lower end of the box body 1, and the lower end of the first rotating disk 4105 is connected to the first elastic telescopic rod 4113, and the first elastic telescopic rod 4113 The inner side of the lower end is connected to the push plate 4115 through the first torsion spring 4114. A water spray head 4116 connected to the first rotating disk 4105 is provided in the first elastic telescopic rod 4113, and a clamping plate 4117 is provided between the water spray head 4116 and the first elastic telescopic rod 4113. The length of the first rack 4111 and the second rack 4112 are both half the circumference of the gear 4108, and the teeth of the first rack 4111 and the second rack 4112 are opposite, so that the gear 4108 can rotate 180° after contact with the first rack 4111 and the second rack 4112 is completed. Two first elastic telescopic rods 4113 are provided, and the central axis of the first elastic telescopic rod 4113 is perpendicular to the lower surface of the first rotating disk 4105.

[0023] The fixing assembly 42 includes a second rotating disk 4201 fixedly connected to the inside of the gear 4108, a first limiting groove 4202 is provided on the upper surface of the second rotating disk 4201, a first limiting rod 4203 fixedly connected to the box body 1 is provided above the first limiting groove 4202, a second limiting rod 4204 fixedly connected to the inner side of the first support plate 4101, a spring 4205 is fixedly connected to the lower end of the first rotating rod 4107, and a second limiting groove 4206 is provided on the lower surface of the second rotating disk 4201.

[0024] A second guide groove 6 is provided below the inner ends of the first support plate 4101. The reciprocating assembly 51 includes a second guide rod 5101 arranged inside the second guide groove 6. One end of the second guide rod 5101 is fixedly connected to a sliding sleeve 5102. A second groove 5103 is provided inside the lower part of the first rotating disk 4105. A connecting plate 5104 fixedly connected to the sliding sleeve 5102 is provided inside the second groove 5103. The middle end of the second guide groove 6 has a wavy appearance structure, and the two ends of the second guide groove 6 have a horizontal straight appearance structure. The groove depth of the horizontal straight groove of the second guide groove 6 is greater than the groove depth of the wavy groove of the second guide groove 6, so that the second guide rod 5101 will reciprocate up and down when moving inside the second guide groove 6. The appearance structure of the connecting plate 5104 is a rectangular parallelepiped, and the central axis of the connecting plate 5104 is perpendicular to the lower surface of the first rotating disk 4105, so that the connecting plate 5104 will not rotate when moving inside the second groove 5103.

[0025] The clamping assembly 52 includes a first fixed plate 5201 fixedly connected to the lower surface of the first rotating disk 4105, a third guide groove 5202 is provided inside the first fixed plate 5201, a point e is provided on the outer side of the upper end of the third guide groove 5202, a point f is provided on the inner side of the upper end of the third guide groove 5202, a point g is provided on the outer side of the lower end of the third guide groove 5202, and a point h is provided on the inner side of the lower end of the third guide groove 5202, point e of the third guide groove 5202 is farther away from the vertical center axis of the first fixed plate 5201 than point f of the third guide groove 5202, and point g of the third guide groove 5202 is farther away from the vertical center axis of the first fixed plate 5201 than point f of the third guide groove 5202, and point g of the third guide groove 5202 is farther away from the vertical center axis of the first fixed plate 5201 than point The h point of the three guide grooves 5202 is closer to the vertical center axis of the first fixed plate 5201. A third guide rod 5203 is provided on the inner side of the third guide groove 5202. The interior of the sliding sleeve 5102 is fixedly connected to the second fixed plate 5204. A hole 5205 is provided on the inner side of the second fixed plate 5204. The inner side of the hole 5205 is slidably connected to the second elastic telescopic rod 5206. The lower end of the second elastic telescopic rod 5206 is fixedly connected to the second torsion spring 5207. The second torsion spring 5207 is connected to the splint 4117 in a fixed connection. Two second elastic telescopic rods 5206 are provided.

[0026] When the detection device moves to the appropriate position for detection, the starting motor 4102 drives the threaded rod 4103 to rotate, so that the second support plate 4104 moves laterally, driving the first rotating disk 4105 and the first elastic telescopic rod 4113 and the first torsion spring 4114 and the push plate 4115, so that the push plate 4115 can fit on the inclined surface of the dam body and move laterally, pushing away stones and silt, and driving the first rotating disk 4105 to move laterally. When the water sprinkler head 4116 is driven to move laterally, it is also driven to move laterally. At this time, the water sprinkler head 4116 is in the state of opening the water spraying. Because the width of the water sprinkler head 4116 is consistent with the width of the push plate 4115, the water sprinkler head 4116 can be directed to the push plate just 4115 is covered but not pushed away to clean up the silt, when the first rotating disk 4105 moves horizontally, it drives the connecting plate 5104 and the sliding sleeve 5102 to move horizontally. Because the connection between the second guide rod 5101 and the sliding sleeve 5102 is a rotating connection, and the appearance structure of the middle end of the second guide groove 6 is wavy, and the appearance structure of the two ends of the second guide groove 6 is horizontal straight, and the groove depth of the horizontal straight groove of the second guide groove 6 is greater than the groove depth of the wavy groove of the second guide groove 6, when the second guide rod 5101 moves inside the second guide groove 6, it will reciprocate up and down, so that the second fixed plate 5204 and the second elastic telescopic rod 5201 are connected to each other. 06 moves up and down, thereby driving the second torsion spring 5207, the clamping plate 4117 and the third guide rod 5203 to move up and down. Because the e point of the third guide groove 5202 is farther away from the vertical center axis of the first fixed plate 5201 than the f point of the third guide groove 5202, and the g point of the third guide groove 5202 is closer to the vertical center axis of the first fixed plate 5201 than the h point of the third guide groove 5202, when the third guide rod 5203 moves to the e point position of the third guide groove 5202 and moves downward, it can move to the inside of both sides of the third guide groove 5202, so that the second elastic telescopic rod 5206, the second torsion spring 5207 and the clamping plate 4117 are moved to both sides. When moving upward, the third guide rod 5203 can move to the inner side of the third guide groove 5202 to clamp the weeds and move upward to pull the weeds out of the gap. When moving upward, the third guide rod 5203 moves to both sides to loosen the clamping plate 4117 and the weeds fall. When the weeds are pulled out of the gap, some soil will be brought out. Because there are two first elastic telescopic rods 4113, and the central axis of the first elastic telescopic rod 4113 is perpendicular to the lower surface of the first rotating disk 4105, two corresponding push plates 4115 are also provided, which can push subsequent soil and weeds away from the cracks, so that the industrial camera 3 can take clearer pictures.

[0027] Because the inspection is carried out on a slope, the soil and weeds brought out can automatically slide down under the action of gravity, reducing secondary pollution.

[0028] Because the clamping plate 4117 is located at the rear side of the sprinkler head 4116, the weeds picked up by the clamping plate 4117 are all cleaned, which reduces the silt on the weeds, increases the friction, and increases the probability of pulling out the weeds.

[0029] Because the push plate 4115 pushes, presses and pulls the weeds first when cleaning the silt, the weeds are first subjected to forces in different directions, making it easier to pull the weeds out.

[0030] When the first rotating disk 4105 moves laterally, it drives the first rotating rod 4107 and the first guide rod 4109 to move laterally. Since the lengths of the first rack 4111 and the second rack 4112 are both half the circumference of the gear 4108, and the teeth of the first rack 4111 and the second rack 4112 are opposite to each other, and the first rack 4111 and the second rack 4112 are arranged at the lower sides of the box body 1, when the first guide rod 4109 moves to a position close to point a, the gear 4108 comes into contact with the first rack 4111. , so that the first rotating rod 4107 drives the first rotating disk 4105 to rotate, so that the first elastic telescopic rod 4113, the push plate 4115, the second elastic telescopic rod 5206, the water spray head 4116 and the clamping plate 4117 rotate 180 degrees. Because the middle end of the second guide groove 6 has a wavy appearance structure, and the two ends of the second guide groove 6 have a horizontal straight appearance structure, and the groove depth of the horizontal straight groove of the second guide groove 6 is greater than the groove depth of the wavy groove of the second guide groove 6, the second guide rod 51 01 can also be rotated out from the inner side of the second guide groove 6. At this time, the motor 4102 rotates in the opposite direction. Because the spring 4205 maintains a natural state at this time, the first guide rod 4109 is below point f, so that the first guide rod 4109 can move to the lower inside of the first guide groove 4110 when performing lateral movement, and the second limiting groove 4206 inside the second rotating disk 4201 also moves to the inside of the second limiting rod 4204, completing the limiting of the gear 4108, so that the gear 4108 will not rotate during the lateral movement and perform the next cleaning movement. When the corresponding gear 4108 moves to the position of the second rack 4112, the gear 4108 will reset and perform the next cleaning movement. The forward and reverse movement of the motor 4102 can maintain the same cleaning effect as before, first using the push plate 4115 to push stones and silt, then using the sprinkler head 4116 for cleaning, then using the splint 4117 to pull out weeds, and finally using another push plate 4115 for cleaning. There is no need to reset and then clean, which saves time and improves efficiency.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting cracks in a dam of a water conservancy project, comprising a box (1), a roller (2) provided on the lower outer side of the box (1), and an industrial camera (3) installed on the lower inner side of the box (1), characterized in that: The industrial camera (3) is connected to a rotating mechanism (4) and a pushing mechanism (5) in sequence below; The rotating mechanism (4) is composed of a steering assembly (41) and a fixed assembly (42), and the fixed assembly (42) surrounds the outside of the steering assembly (41); the pushing mechanism (5) includes a reciprocating assembly (51) and a clamping assembly (52), and the clamping assembly (52) is located on one side of the reciprocating assembly (51); The steering assembly (41) includes a first support plate (4101) fixed to the middle of the lower part of the box (1), one end of the first support plate (4101) is connected to the motor (4102) on the outside, the output end of the motor (4102) is connected to the threaded rod (4103), the threaded rod (4103) is externally threadedly connected to the second support plate (4104), the second support plate (4104) slides with the first support plate (4101), the second support plate (4104) is internally rotatably connected to the first rotating disk (4105), the upper end of the first rotating disk (4105) is provided with a first groove (4106), the upper end of the first rotating rod (4107) in the first groove (4106) is fixed with a gear (4108), the first rotating rod (4107) is connected to the first rotating rod (4107) on the outside, and the first rotating rod (4107) is connected to the first rotating rod (4107) on the inside. 107) is provided with a first guide rod (4109) on the outside, a first guide groove (4110) is provided on the upper inner side of the first support plate (4101) for the first guide rod (4109) to be nested, a first rack (4111) and a second rack (4112) are fixed to one end below the box body (1), the lower end of the first rotating disk (4105) is connected to the first elastic telescopic rod (4113), and the inner side of the lower end of the first elastic telescopic rod (4113) is connected to the push plate (4115) through a first torsion spring (4114), a water spray head (4116) connected to the first rotating disk (4105) is provided inside the first elastic telescopic rod (4113), and a splint (4117) is provided between the water spray head (4116) and the first elastic telescopic rod (4113).

2. A water conservancy project dam crack detection device according to claim 1, characterized in that: The inner side surface of the first groove (4106) fits with the outer side surface of the lower end of the first rotating rod (4107), and the appearance structure shape of the lower end of the first rotating rod (4107) is a rectangular parallelepiped, and the appearance structure shape of the upper end of the first rotating rod (4107) is a cylinder.

3. The device for detecting cracks in a dam body of a water conservancy project according to claim 1, characterized in that: A point a is provided on the outside of one end of the first guide groove (4110), and a point b is provided on the inside of one end of the first guide groove (4110). A point c is provided on the outside of the other end of the first guide groove (4110), and a point d is provided on the inside of the other end of the first guide groove (4110). The vertical height of point a of the first guide groove (4110) is higher than the vertical height of point b of the first guide groove (4110), and the vertical height of point c of the first guide groove (4110) is lower than the vertical height of point d of the first guide groove (4110).

4. The device for detecting cracks in a dam body of a water conservancy project according to claim 1, characterized in that: The lengths of the first rack (4111) and the second rack (4112) are both half the circumference of the gear (4108), and the teeth of the first rack (4111) and the second rack (4112) are opposite to each other.

5. The device for detecting cracks in a dam body of a water conservancy project according to claim 1, characterized in that: Two first elastic telescopic rods (4113) are provided, and the central axis of the first elastic telescopic rods (4113) is perpendicular to the lower surface of the first rotating disk (4105).

6. The device for detecting cracks in a dam body of a water conservancy project according to claim 1, characterized in that: The fixing assembly (42) includes a second rotating disk (4201) fixedly connected to the inside of the gear (4108), a first limiting groove (4202) is provided on the upper surface of the second rotating disk (4201), a first limiting rod (4203) fixedly connected to the box body (1) is provided above the first limiting groove (4202), a second limiting rod (4204) fixedly connected to the inner side of the first support plate (4101), a spring (4205) is fixedly connected to the lower end of the first rotating rod (4107), and a second limiting groove (4206) is provided on the lower surface of the second rotating disk (4201).

7. The device for detecting cracks in a dam of a water conservancy project according to claim 1, characterized in that: A second guide groove (6) is provided below both ends of the inner side of the first support plate (4101), the reciprocating assembly (51) includes a second guide rod (5101) provided inside the second guide groove (6), one end of the second guide rod (5101) is fixedly connected to a sliding sleeve (5102), a second groove (5103) is provided inside the lower portion of the first rotating disk (4105), and a connecting plate (5104) fixedly connected to the sliding sleeve (5102) is provided inside the second groove (5103).

8. The device for detecting cracks in a dam body of a water conservancy project according to claim 7, characterized in that: The appearance structure of the middle end of the second guide groove (6) is wavy, and the appearance structure of the two ends of the second guide groove (6) is horizontal straight, and the groove depth of the horizontal straight groove of the second guide groove (6) is greater than the groove depth of the wavy groove of the second guide groove (6).

9. The device for detecting cracks in a dam body of a water conservancy project according to claim 7, characterized in that: The connecting plate (5104) has an external structure of a rectangular parallelepiped, and the central axis of the connecting plate (5104) is perpendicular to the lower surface of the first rotating disk (4105).

10. The device for detecting cracks in a dam of a water conservancy project according to claim 1, characterized in that: The clamping assembly (52) includes a first fixed plate (5201) fixedly connected to the lower surface of the first rotating disk (4105), a third guide groove (5202) is provided inside the first fixed plate (5201), a point e is provided on the outer side of the upper end of the third guide groove (5202), a point f is provided on the inner side of the upper end of the third guide groove (5202), a point g is provided on the outer side of the lower end of the third guide groove (5202), and a point h is provided on the inner side of the lower end of the third guide groove (5202), point e of the third guide groove (5202) is further away from the vertical center axis of the first fixed plate (5201) than point f of the third guide groove (5202), and point g of the third guide groove (5202) is further away from the vertical center axis of the first fixed plate (5201) than point f of the third guide groove (5202), and point g of the third guide groove (5202) is further away from the vertical center axis of the first fixed plate (5201) than point Point h of the guide groove (5202) is closer to the vertical center axis of the first fixed plate (5201), a third guide rod (5203) is provided on the inner side of the third guide groove (5202), the interior of the sliding sleeve (5102) is fixedly connected to the second fixed plate (5204), the inner side of the second fixed plate (5204) is provided with a hole (5205), the inner side of the hole (5205) is slidably connected to the second elastic telescopic rod (5206), the lower end of the second elastic telescopic rod (5206) is fixedly connected to the inside of the second torsion spring (5207), the second torsion spring (5207) and the splint (4117) are connected in a fixed manner, and two second elastic telescopic rods (5206) are provided.

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