An underwater breaking device and construction method for DCM pile heads

Abstract

The present invention belongs to the technical field of pile foundation construction, and specifically provides a DCM pile head underwater breaking device and a construction method. The DCM pile head underwater breaking device includes an underwater moving component, a drilling component, and a breaking component. The underwater moving component includes a moving body and a propeller thruster. Through the propeller thruster, actions such as diving, floating, turning, and suspension in water can be achieved. The drilling component and the splitting bar are respectively arranged on the moving body, and can move to the position of the DCM pile head to be broken together with the moving body. After moving into position, first drill a hole in the DCM pile head through the drilling component, and then the moving body adjusts its position to insert the splitting bar into the hole. The hydraulic pump station provides hydraulic pressure to make the wedge block of the splitting bar expand the pile head from the inner wall of the hole, completing the breaking work of the DCM pile head and making the height of the DCM pile head meet the requirements of the design elevation.

Description

Technical Field

[0001] The present invention belongs to the technical field of pile foundation construction, and particularly relates to an underwater breaking device for DCM pile heads and a construction method thereof. Background Art

[0002] The DCM (Deep Cement Mixing Pile) pile is fully called the deep cement mixing pile, which is a foundation reinforcement technology. The construction process of the DCM pile includes steps such as pile driver positioning, centering, leveling, adjusting the verticality of the guiding frame, pre-mixing slurry, stirring and sinking, spraying slurry and stirring and lifting, repeating stirring and sinking, spraying slurry and repeating stirring and lifting, and pile driver shifting. It penetrates a special deep mixing machine into the soft soil and forcibly mixes cement and foundation soil in situ along the vertical direction of the soil layer to form cement soil blocks or cement sand piles to reinforce the soft foundation. The DCM process is applicable to soft foundation treatment with remarkable effects. After treatment, piles, walls, etc. can be formed, and it is applicable to treating geological types such as silt, sand, silty soil, peat soil, and silty clay.

[0003] After the construction of the DCM pile is completed, in order to ensure that the pile is high enough during the construction of the DCM pile, the slurry transportation will not stop until the grouting reaches the specified elevation. Eventually, after the construction is completed, there may be a problem that the pile top elevation is higher than the specified elevation. The inconsistent pile top height will have an adverse impact on the subsequent construction, and the excess pile head exceeding the pile top elevation needs to be broken. To solve this problem, in the prior art, when the DCM pile is constructed underwater, after the pile body construction is completed, the operator needs to carry a cutting device and dive to the pile body for underwater cutting. The workload of underwater cutting operation is large and the operation efficiency is low. Summary of the Invention

[0004] The present invention provides an underwater breaking device for DCM pile heads and a construction method thereof, aiming to solve the problem that in the prior art, when the DCM pile is constructed underwater, after the pile body construction is completed, the operator needs to carry a cutting device and dive to the pile body for underwater cutting, and the workload of underwater cutting operation is large and the operation efficiency is low.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In the first aspect, the present invention provides an underwater breaking device for DCM pile heads, including:

[0007] An underwater moving component, including a moving body and a plurality of propeller thrusters, and the plurality of propeller thrusters are respectively arranged on the moving body;

[0008] A drilling component, arranged on the moving body, for drilling holes in the DCM pile head; and

[0009] The breaking component includes a hydraulic pump station and a splitting rod. The splitting rod is arranged on the moving body, and the hydraulic pump station is communicated with the communication port of the splitting rod.

[0010] In a possible implementation manner, the underwater moving component further includes a plurality of clamping robotic arms. The plurality of clamping robotic arms are respectively arranged on the moving body, and a clamping space for accommodating the DCM pile head is formed by enclosing among the plurality of clamping robotic arms.

[0011] In a possible implementation manner, the clamping robotic arm includes:

[0012] A first cantilever, the upper end of the first cantilever is hinged to the moving body;

[0013] A first telescopic rod, one end of the first telescopic rod is hinged to the first cantilever, and the other end is hinged to the moving body;

[0014] A second cantilever, the upper end of the second cantilever is hinged to the lower end of the first cantilever, and a clamping plate is arranged at the lower end of the second cantilever; and

[0015] A second telescopic rod, one end of the second telescopic rod is hinged to the first cantilever, and the other end of the second telescopic rod is hinged to the second cantilever.

[0016] In a possible implementation manner, the drilling component includes:

[0017] An installation bracket, connected to the moving body, and the installation bracket has a lifting slide rail arranged in the vertical direction;

[0018] An installation plate, slidably arranged on the lifting slide rail;

[0019] A lifting mechanism, arranged on the installation bracket, for driving the installation plate to move along the lifting slide rail;

[0020] A driving motor, arranged on the installation plate; and

[0021] A drill barrel, vertically arranged downward on the installation plate, and the rotation axis of the drill barrel is in transmission connection with the motor shaft of the driving motor.

[0022] In a possible implementation manner, the drilling component further includes:

[0023] A first transverse movement mechanism, arranged on the moving body, and having a first slide rail arranged in the first horizontal direction;

[0024] A second transverse movement mechanism, movably arranged on the first slide rail, the second transverse movement mechanism has a second slide rail arranged in the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the installation bracket is slidably arranged on the second slide rail;

[0025] The first driving mechanism is arranged on the first transverse movement mechanism and is used to drive the second transverse movement mechanism to move along the first slide rail; and

[0026] The second driving mechanism is arranged on the second transverse movement mechanism and is used to drive the mounting bracket to move along the second slide rail.

[0027] In a possible implementation manner, the drilling assembly further includes a cleaning unit. The cleaning unit is arranged inside the drill barrel and has a cleaning rod facing the opening of the drill barrel. The cleaning rod is arranged to be axially telescopic along the drill barrel.

[0028] In a possible implementation manner, a fixing plate is arranged at the bottom of the moving body. The fixing plate has a plurality of fixing holes, and the splitting bar is arranged in the fixing holes. The splitting bar has one or more.

[0029] In a possible implementation manner, the DCM pile head underwater breaking device further includes a camera unit. The camera unit is arranged on the moving body.

[0030] Compared with the prior art, the beneficial effects of the DCM pile head underwater breaking device provided by the present invention are as follows:

[0031] The DCM pile head underwater breaking device provided by the present invention includes an underwater moving assembly, a drilling assembly and a breaking assembly. The underwater moving assembly includes a moving body and a propeller. Through the propeller, actions such as diving, surfacing, turning and suspending in water can be realized. The drilling assembly and the splitting bar are respectively arranged on the moving body and can move to the position of the DCM pile head to be broken together with the moving body. After moving in place, first drill a hole in the DCM pile head through the drilling assembly, and then the moving body adjusts its position to insert the splitting bar into the drilled hole. The hydraulic pump station provides hydraulic pressure to expand the wedge block of the splitting bar from the inner wall of the drilled hole to crack the pile head, completing the breaking work of the DCM pile head and making the height of the DCM pile head meet the requirements of the design elevation.

[0032] Compared with the existing underwater cutting operation, this solution is simple to operate and has higher efficiency. Only by inserting the splitting bar into the drilled hole and supplying hydraulic oil, the breaking work of the DCM pile head can be completed, saving manpower and time. When the splitting bar is performing the breaking work, it can be remotely controlled, which is safer.

[0033] In a second aspect, the present invention provides a DCM pile head underwater breaking construction method, which is implemented by using a DCM pile head underwater breaking device in one of the above implementation manners, and includes the following steps:

[0034] Scan the constructed DCM pile to obtain the position and the exceeded size of the DCM pile head that exceeds the design elevation;

[0035] Control the underwater breaking device of the DCM pile head to dive to the top of the corresponding DCM pile head, drill holes in the DCM pile head to a preset depth through the drilling assembly, and the number of drill holes is one or more;

[0036] After the drilling is completed, control the underwater moving assembly to move so that the splitting rod extends into the drill hole, and the hydraulic pump station conveys pressure to the splitting rod to cause the splitting rod to expand and crack the part of the pile head that needs to be broken.

[0037] In a possible implementation manner, the underwater moving assembly is controlled to move by means of remote control by personnel on the ground or on the ship.

[0038] The underwater breaking construction method of the DCM pile head provided by the present invention is realized by using an underwater breaking device of the DCM pile head in one of the above implementation manners, and has the same technical effects as it, which will not be elaborated here. Description of the Drawings

[0039] Figure 1 is a three-dimensional view of the underwater breaking device of the DCM pile head provided by the present invention Figure 1 ;

[0040] Figure 2 is a three-dimensional view of the underwater breaking device of the DCM pile head provided by the present invention Figure 2 ;

[0041] Figure 3 is Figure 2 a partial enlarged view of part A in

[0042] Figure 4 is a construction drawing of the DCM pile;

[0043] Explanation of the Reference Numerals:

[0044] 10. Underwater moving assembly; 11. Moving body; 111. Fixed plate; 1111. Mounting hole positions; 12. Propeller thruster; 13. Clamping robotic arm; 131. First cantilever; 132. First telescopic rod; 133. Second cantilever; 134. Second telescopic rod; 14. Camera unit; 20. Drilling assembly; 21. Mounting bracket; 22. Mounting plate; 23. Lifting mechanism; 24. Driving motor; 25. Drill barrel; 26. First slide rail; 27. Second slide rail; 28. First driving mechanism; 29. Second driving mechanism; 30. Breaking assembly; 31. Hydraulic pump station; 32. Splitting rod. Detailed Embodiments

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] Please refer to Figures 1 to 4 together, and the DCM pile head underwater breaking device and construction method provided by the present invention will be described below.

[0047] Please refer to Figures 1 to 4 , in the first aspect, the present invention provides a DCM pile head underwater breaking device, which includes an underwater moving component 10, a drilling component 20 and a breaking component 30. The underwater moving component 10 includes a moving body 11 and a plurality of propeller thrusters 12, and the plurality of propeller thrusters 12 are respectively arranged on the moving body 11; the drilling component 20 is arranged on the moving body 11 and is used for drilling on the DCM pile head; the breaking component 30 includes a hydraulic pump station 31 and a splitting bar 32, the splitting bar 32 is arranged on the moving body 11, and the communication port of the hydraulic pump station 31 is connected to the splitting bar 32.

[0048] Compared with the prior art, the beneficial effects of the DCM pile head underwater breaking device provided by the present invention are:

[0049] The DCM pile head underwater breaking device provided by the present invention includes an underwater moving component 10, a drilling component 20 and a breaking component 30. The underwater moving component 10 includes a moving body 11 and a propeller thruster 12. Through the propeller thruster 12, actions such as diving, surfacing, turning, and suspension in water can be realized. The drilling component 20 and the splitting bar 32 are respectively arranged on the moving body 11 and can move to the position of the DCM pile head to be broken together with the moving body 11. When the movement is in place, first drill a hole in the DCM pile head through the drilling component 20, and then the moving body 11 adjusts its position to insert the splitting bar 32 into the drilled hole. The hydraulic pump station 31 provides hydraulic pressure to expand the wedge block of the splitting bar 32 from the inner wall of the drilled hole to crack the pile head, completing the breaking work of the DCM pile head and making the height of the DCM pile head meet the requirements of the design elevation.

[0050] Compared with the existing underwater cutting operation, this solution is simple to operate and has higher efficiency. Only by inserting the splitting bar 32 into the drilled hole and supplying hydraulic oil, the breaking work of the DCM pile head can be completed, saving manpower and time. When the splitting bar 32 is performing the breaking work, it can be remotely controlled, which is safer.

[0051] The underwater mobile component 10 is an underwater robot, including a mobile body 11 and multiple propeller thrusters 12. The mobile body 11 can be fabricated using metal or gas materials, and its shape can be spherical, square, submarine-shaped, etc. The propeller thrusters 12 are respectively arranged at the top, bottom, and sides of the mobile body 11. By controlling the rotation speed and direction of the propellers at different positions, the underwater mobile component 10 can perform actions such as diving, surfacing, hovering, and turning, enabling the underwater mobile component 10 to accurately move to the position of the DCM pile head to be broken.

[0052] As needed, a power module, a GPS positioning module, a wireless control module, a signal transmitting and receiving module, an image module, a ranging module, etc. can be mounted on the mobile body 11 to achieve functions such as remote control, positioning, ranging, and image capture.

[0053] The drilling component 20 is arranged on the mobile body 11 and is used for drilling on the DCM pile head. The structural form of the drilling component 20 can be an existing water mill drill, which has a waterproof function and can be used underwater. It drills on the DCM pile head through a spiral drill bit or a drilling sleeve. To enable the subsequent splitting bar 32 to be inserted, the diameter of the drilled hole should be slightly larger than the diameter of the splitting bar 32. There are no specific restrictions on the number, depth, aperture, arrangement method, etc. of the drilled holes, and the user can choose and set them according to the actual situation. The greater the depth of the drilled hole, the deeper the splitting bar 32 can be inserted, and the greater the height of the DCM pile head broken.

[0054] The breaking component 30 includes a hydraulic pump station 31 and a splitting bar 32. The hydraulic pump station 31 can be arranged on the mobile body 11, and a waterproof shell is arranged outside the hydraulic pump station 31 to prevent water from entering the equipment interior and resist water pressure. In addition, when the height of the DCM pile head from the water surface is relatively small, the hydraulic pump station 31 can also be arranged on a ship and connected to the splitting bar 32 through a hydraulic hose, and the operator stays on the ship for remote control.

[0055] Please refer to Figure 1 and Figure 2 , in some possible embodiments, the underwater mobile component 10 further includes multiple clamping robotic arms 13. The multiple clamping robotic arms 13 are respectively arranged on the mobile body 11, and a clamping space for accommodating the DCM pile head is formed by enclosing among the multiple clamping robotic arms 13. After the mobile body 11 dives to the position of the DCM pile head to be broken, it can be clamped and fixed by the clamping robotic arms 13 to prevent the device from moving or shaking during drilling and breaking. There are no specific restrictions on the shape and structure of the clamping robotic arms 13, and existing underwater operation robotic arms on the market can be directly selected.

[0056] Please refer to Figure 1 and Figure 2, in some possible embodiments, the clamping robotic arm 13 includes a first cantilever 131, a first telescopic rod 132, a second cantilever 133, and a second telescopic rod 134. The upper end of the first cantilever 131 is hinged to the moving body 11; one end of the first telescopic rod 132 is hinged to the first cantilever 131, and the other end is hinged to the moving body 11; the upper end of the second cantilever 133 is hinged to the lower end of the first cantilever 131, and a clamping plate is provided at the lower end of the second cantilever 133; one end of the second telescopic rod 134 is hinged to the first cantilever 131, and the other end of the second telescopic rod 134 is hinged to the second cantilever 133.

[0057] In this embodiment, the clamping robotic arm 13 includes a first cantilever 131, a first telescopic rod 132, a second cantilever 133, and a second telescopic rod 134. The second cantilever 133 is connected with a clamping plate, and the clamping plate is used to contact the DCM pile head. By changing the angle of the first cantilever 131 through the first telescopic rod 132 and changing the angle of the second cantilever 133 through the second telescopic rod 134, the clamping and releasing actions can be completed. The shape and size of the clamping plate are adapted to those of the DCM pile head.

[0058] As Figure 1 shown, the moving body 11 specifically includes a first fixing part and a second fixing part, and the first fixing part and the second fixing part are connected into one body through a connecting rod. The connecting rod can be a fixed rod body or a telescopic rod body. When pile head breaking work needs to be carried out on two adjacent DCM piles, the distance between the first fixing part and the second fixing part can be adjusted to the distance between the DCM pile bodies. In this way, when one DCM pile head is performing drilling operation, the other DCM pile head can be broken through the splitting rod 32, which helps to improve the operation efficiency.

[0059] Please refer to Figure 2 and Figure 3 , in some possible embodiments, the drilling assembly 20 includes a mounting bracket 21, a mounting plate 22, a lifting mechanism 23, a driving motor 24, and a drill barrel 25. The mounting bracket 21 is connected to the moving body 11, and the mounting bracket 21 has a lifting slide rail arranged in the vertical direction; the mounting plate 22 is slidably arranged on the lifting slide rail; the lifting mechanism 23 is arranged on the mounting bracket 21 and is used to drive the mounting plate 22 to move along the lifting slide rail; the driving motor 24 is arranged on the mounting plate 22; the drill barrel 25 is vertically downwardly arranged on the mounting plate 22, and the rotating shaft of the drill barrel 25 is in transmission connection with the motor shaft of the driving motor 24.

[0060] In this embodiment, the drilling assembly 20 includes a mounting bracket 21, a mounting plate 22, a lifting mechanism 23, a driving motor 24, and a drill barrel 25. The driving motor 24 is a waterproof motor that can drive the drill barrel 25 to rotate. The lifting mechanism 23 drives the mounting plate 22, the driving motor 24, and the drill barrel 25 to descend together to drill a hole in the DCM pile head. When multiple holes need to be drilled, the drilling position can be adjusted by moving the body 11.

[0061] Please refer to Figure 2 and Figure 3 , in some possible embodiments, the drilling assembly 20 further includes a first lateral movement mechanism, a second lateral movement mechanism, a first driving mechanism 28, and a second driving mechanism 29. The first lateral movement mechanism is provided on the moving body 11 and has a first slide rail 26 arranged along a first horizontal direction; the second lateral movement mechanism is movably provided on the first slide rail 26. The second lateral movement mechanism has a second slide rail 27 arranged along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. The mounting bracket 21 is slidably provided on the second slide rail 27; the first driving mechanism 28 is provided on the first lateral movement mechanism and is used to drive the second lateral movement mechanism to move along the first slide rail 26; the second driving mechanism 29 is provided on the second lateral movement mechanism and is used to drive the mounting bracket 21 to move along the second slide rail 27.

[0062] To more conveniently adjust the drilling position, in this embodiment, the drilling assembly 20 further includes a first lateral movement mechanism, a second lateral movement mechanism, a first driving mechanism 28, and a second driving mechanism 29. By changing the position of the mounting bracket 21 relative to the first slide rail 26 and the second slide rail 27, the adjustment of the drilling position can be achieved.

[0063] The first driving mechanism 28 and the second driving mechanism 29 may specifically be a motor screw mechanism, an electric telescopic rod, or a hydraulic push rod.

[0064] In some possible embodiments, to prevent the core from getting stuck in the drill barrel 25 after drilling and affecting the next drilling, the drilling assembly 20 further includes a cleaning unit. The cleaning unit is provided inside the drill barrel 25 and has a cleaning rod facing the opening of the drill barrel 25. The cleaning rod is telescopically arranged along the axial direction of the drill barrel 25. When there is a core residue in the drill barrel 25, control the cleaning rod to extend to eject the core. Alternatively, during drilling, a dedicated operator can be arranged to check. If the core cannot be removed after drilling, the core can be removed from the drill barrel 25 or the pile body manually with the help of tools such as pliers.

[0065] Please refer to Figure 1 and Figure 2, in some possible embodiments, a fixing plate 111 is provided at the bottom of the moving body 11. The fixing plate 111 has a plurality of fixing holes, and the splitting bars 32 are arranged in the fixing holes. There is one or more splitting bars 32. According to the number of drill holes, one or more splitting bars 32 can be installed on the fixing plate 111. The plurality of splitting bars 32 can be supplied with liquid pressure by a hydraulic pump station 31.

[0066] Please refer to Figure 2 and Figure 3 , in some possible embodiments, the DCM pile head underwater breaking device further includes a camera unit 14. The camera unit 14 is arranged on the moving body 11 and can take pictures of the underwater operation conditions and transmit the image information to the operators on the ground or on the ship.

[0067] In a second aspect, the present invention provides a DCM pile head underwater breaking construction method, which is realized by using the above-mentioned DCM pile head underwater breaking device, and includes the following steps:

[0068] Confirm that the strength of the DCM pile has reached the design requirements. After the strength is qualified, use ranging instruments such as sonar to scan the completed DCM pile to obtain the position and the exceeded size of the DCM pile head exceeding the design elevation. Make a specific construction plan according to the scanning results, and determine the number, diameter and depth of the drill holes required on the DCM pile head.

[0069] Control the movement of the underwater moving assembly 10 by means of remote control by ground personnel, accurately position it with the help of the GPS positioning system, take underwater pictures through the camera unit 14, control the DCM pile head underwater breaking device to dive to the top of the corresponding DCM pile head, and fix it with the clamping robotic arm 13. Drill holes in the DCM pile head to the preset depth through the drilling assembly 20. The number of drill holes is one or more.

[0070] After the drilling is completed, control the movement of the underwater moving assembly 10 to make the splitting bars 32 extend into the drill holes. The hydraulic pump station 31 supplies pressure to the splitting bars 32 to make the wedges of the splitting bars 32 extend out and expand the part of the pile head to be broken.

[0071] After the construction is completed, take pictures of the DCM pile head through the camera unit 14, detect its height, and judge whether it meets the requirements. When it does not meet the requirements, perform re-construction to ensure that the adjustment of the pile top elevation of each DCM pile meets the design and safety requirements.

[0072] In this application, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs.

[0073] In this application, unless otherwise clearly defined or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0074] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0075] As mentioned above, this is the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

[0076] It can be understood that the various parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be elaborated here. After this explanation, it can be considered that the specification of this invention has recorded each combined embodiment and can support different combined embodiments.

[0077] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An underwater breaking device for DCM pile heads, characterized in that, Comprising: An underwater moving component (10), including a moving body (11) and a plurality of propeller thrusters (12), and the plurality of propeller thrusters (12) are respectively arranged on the moving body (11); A drilling component (20), arranged on the moving body (11) for drilling on the DCM pile head; and A breaking component (30), including a hydraulic pump station (31) and a splitting bar (32), the splitting bar (32) is arranged on the moving body (11), and the communication port of the hydraulic pump station (31) is connected to the splitting bar (32); The underwater moving component (10) further includes a plurality of clamping robotic arms (13), and the plurality of clamping robotic arms (13) are respectively arranged on the moving body (11), and a clamping space for accommodating the DCM pile head is formed by enclosing between the plurality of clamping robotic arms (13); The drilling component (20) includes: An installation bracket (21), connected to the moving body (11), and the installation bracket (21) has a lifting slide rail arranged in the vertical direction; An installation plate (22), slidably arranged on the lifting slide rail; A lifting mechanism (23), arranged on the installation bracket (21) for driving the installation plate (22) to move along the lifting slide rail; A driving motor (24), arranged on the installation plate (22); and A drill cylinder (25), arranged vertically downward on the installation plate (22), and the rotation axis of the drill cylinder (25) is drivingly connected to the motor shaft of the driving motor (24); The drilling component (20) further includes: A first lateral movement mechanism, arranged on the moving body (11) and having a first slide rail (26) arranged in the first horizontal direction; A second lateral movement mechanism, movably arranged on the first slide rail (26), the second lateral movement mechanism has a second slide rail (27) arranged in the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the installation bracket (21) is slidably arranged on the second slide rail (27); A first driving mechanism (28), arranged on the first lateral movement mechanism for driving the second lateral movement mechanism to move along the first slide rail (26); and A second driving mechanism (29), arranged on the second lateral movement mechanism for driving the installation bracket (21) to move along the second slide rail (27).

2. The underwater breaking device for DCM pile head according to claim 1, wherein The clamping robotic arm (13) includes: A first cantilever (131), the upper end of the first cantilever (131) is hinged to the moving body (11); A first telescopic rod (132), one end of the first telescopic rod (132) is hinged to the first cantilever (131), and the other end is hinged to the moving body (11); A second cantilever (133), the upper end of the second cantilever (133) is hinged to the lower end of the first cantilever (131), and a clamping plate is arranged at the lower end of the second cantilever (133); and A second telescopic rod (134), one end of the second telescopic rod (134) is hinged to the first cantilever (131), and the other end is hinged to the second cantilever (133).

3. The underwater breaking device for DCM pile head according to claim 1, characterized in that, The drilling assembly (20) further includes a cleaning unit, which is disposed inside the drill barrel (25) and has a cleaning rod facing the opening of the drill barrel (25), and the cleaning rod is axially telescopically arranged along the drill barrel (25).

4. The underwater breaking device for the DCM pile head according to claim 1, wherein, A fixing plate (111) is provided at the bottom of the moving body (11), the fixing plate (111) has a plurality of fixing holes, and the splitting rods (32) are disposed in the fixing holes, and there is one or more splitting rods (32).

5. The underwater breaking device for the DCM pile head according to claim 1, wherein, The underwater moving assembly (10) further includes a camera unit (14), and the camera unit (14) is disposed on the moving body (11).

6. A construction method for underwater breaking of DCM pile heads, characterized in that, It is realized by using the DCM pile head underwater breaking device according to any one of claims 1-5, and includes the following steps: Scan the constructed DCM pile to obtain the position and the exceeded size of the DCM pile head that exceeds the design elevation at the pile top; Control the DCM pile head underwater breaking device to dive to the top of the corresponding DCM pile head, and drill holes in the DCM pile head to a preset depth through the drilling assembly (20), and the number of drill holes is one or more; After the drilling is completed, control the underwater moving assembly (10) to move so that the splitting rod (32) extends into the drill hole, and the hydraulic pump station (31) delivers pressure to the splitting rod (32) to cause the splitting rod (32) to expand and crack the pile head part to be broken.

7. A method for underwater breaking of DCM pile heads according to claim 6, characterized in that, Control the movement of the underwater moving assembly (10) by means of remote control by personnel on the ground or on the ship.

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