An underwater tower crane foundation construction device and its construction method

Abstract

The present invention relates to the technical field of tower crane foundations, and specifically discloses an underwater tower crane foundation construction device and its construction method, which includes a rotary drilling device, a separating member, and a cleaning member. The rotary drilling device includes a rotary drilling cylinder and a driving structure. A cavity is provided inside the rotary drilling cylinder. The separating member includes a partition plate and a filter plate. The partition plate horizontally divides the cavity into a sludge chamber and a sewage chamber. A through hole is provided on the partition plate, and the sludge chamber communicates with the sewage chamber through the through hole. The lower end of the sludge chamber is open, and a bottom plate is rotatably installed at the lower end of the rotary drilling cylinder. A feed inlet is provided on the bottom plate. The filter plate is longitudinally slidably arranged in the sludge chamber, and a first elastic member is provided between the filter plate and the rotary drilling cylinder. The lower end of the sewage chamber is closed. The cleaning member includes a movable plate longitudinally slidably arranged in the sewage chamber. The present invention can achieve the dynamic separation of sludge and sewage during the rotary drilling process, reduce the moisture content of the sludge, lower the transportation and treatment costs, and at the same time can use the sewage to perform backwashing and cleaning on the filter plate and the sludge chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of tower crane foundations, and particularly relates to an underwater tower crane foundation construction device and a construction method thereof. Background Art

[0002] When constructing an underwater tower crane foundation, to ensure the stability of the main pier, it is usually necessary to dig holes and pour concrete at the bottom of the water to enable the bottom of the support column to bear a certain pressure. Specifically, the sludge at the bottom of the water is cleaned by a rotary drilling device, so that the concrete forms a fixed shape. The drill bit of the rotary drilling device has a cavity with an opening downward. Under the drive of the driving device, the drill bit rotates and drills downward while loading the soil chips into the cavity through the opening at the lower end of the drill bit. After the cavity is filled, the drill bit is removed. After the drill bit leaves the drilling hole, the bottom plate blocking the opening at the lower end of the drill bit is opened, and the soil chips leave the cavity under the action of their own gravity to complete the drilling work.

[0003] The patent document with the authorization announcement number CN111749620B discloses a cast-in-place pile rotary drill barrel slag shoveling and unloading device, including a drill barrel and a slag shoveling and unloading pressure rod that moves up and down relative to the drill barrel. The drill barrel has a cavity for accommodating slag. The upper part of the slag shoveling and unloading pressure rod passes through the top plate of the drill barrel to form an operation section located outside the cavity. The lower part of the slag shoveling and unloading pressure rod is located in the cavity to form an internal section; a shovel plate is connected to the internal section of the slag shoveling and unloading pressure rod, and the shovel plate is close to the inner wall of the drill barrel; when the drill barrel is drilling, the slag is embedded in the cavity of the drill barrel. After the drill barrel is lifted out, by operating the slag shoveling and unloading pressure rod to drive the shovel plate to move up and down, the shovel plate can shovel off the slag between the inner wall of the cavity, and then, by the self-weight of the slag, the slag can fall out of the cavity of the drill barrel more conveniently without the need to rotate the drill barrel back and forth.

[0004] However, when a conventional rotary drilling device is used, due to the certain adsorption of the underwater sludge, the sludge is easily adsorbed on the inner wall of the drill bit cavity. Therefore, during the repeated use of the rotary drilling device, it is necessary to clean it manually at irregular times, which affects the construction efficiency. In addition, since the underwater sludge usually contains a large amount of water, when this high-moisture sludge is discharged by the rotary drilling device, it will not only cause a significant increase in transportation costs, but may also bring inconvenience to subsequent treatment work. Summary of the Invention

[0005] The present invention provides an underwater tower crane foundation construction device and a construction method thereof, aiming to solve the problems in the related rotary drilling device that the sludge is easily adsorbed on the inner wall of the drill bit cavity, requires manual cleaning at irregular times, affects the construction efficiency, and the sludge contains a large amount of water, which will cause an increase in transportation costs and bring inconvenience to subsequent treatment work.

[0006] In a first aspect, the present invention provides an underwater tower crane foundation construction device, comprising a rotary drilling device, the rotary drilling device comprising a rotary drilling drum and a drive structure, the rotary drilling drum having a cavity therein, the drive structure being used to drive the rotary drilling drum to rotate and feed, and further comprising a separation member and a cleaning member disposed within the rotary drilling drum;

[0007] The separator includes a partition and a filter plate. The partition is arranged in the cavity and is used to horizontally divide the cavity into a sludge chamber and a sewage chamber. The upper end of the partition is provided with a through hole, and the sludge chamber is connected to the sewage chamber through the through hole. The lower end of the sludge chamber is open, and a bottom plate capable of closing the sludge chamber is rotatably installed at the lower end of the rotary excavation barrel. The bottom plate is provided with a feed port for sludge to enter. The filter plate is longitudinally slidably arranged in the sludge chamber, and an elastic member is provided between the filter plate and the rotary excavation barrel so that the filter plate is initially located at the lower part of the sludge chamber. The shape of the filter plate is adapted to the shape of the sludge chamber.

[0008] The lower end of the sewage cavity is closed, and the cleaning piece comprises a movable plate which is longitudinally slidably arranged in the sewage cavity, and the shape of the movable plate is adapted to the shape of the sewage cavity.

[0009] During operation, the rotary excavator rotates and drills downward, and the sludge enters the sludge chamber through the feed port. As the amount of sludge in the sludge chamber gradually increases, the filter plate can be pushed up to intercept the solid particles in the sludge, while allowing the sewage to float up. In this process, the filter plate can squeeze the sludge to further separate the water in the sludge. When the height of the sewage exceeds the height of the opening, the sewage in the sludge chamber can overflow into the sewage chamber to achieve solid-liquid separation. After the material is taken, the rotary excavator moves to the unloading position, and the bottom plate rotates to open the lower end of the sludge chamber. At this time, the sludge in the sludge chamber will be discharged under the action of gravity. At the same time, the filter plate moves downward under the action of the elastic member 1 to scrape off the sludge adhering to the side wall of the sludge chamber. After unloading is completed, the movable plate moves upward to push the sewage in the sewage chamber back to the sludge chamber and be discharged. In this process, the sewage can backwash the filter plate and the sludge chamber.

[0010] Preferably, a rotating shaft is rotatably installed in the sewage chamber, and a driving member for driving the rotating shaft to rotate is installed on the rotary excavation barrel. The lower end of the rotating shaft passes through the bottom of the sewage chamber and is connected to the bottom plate.

[0011] Preferably, a spiral groove is provided on the rotating shaft, and the spiral groove is arranged from bottom to top along the rotation direction of the rotating shaft. A through hole is provided on the movable plate for the rotating shaft to pass through, and a slider is provided in the through hole. The movable plate slides with the spiral groove through the slider.

[0012] The effect is that, when the shaft rotates to open and close the bottom plate, the movable plate can be moved up and down by sliding cooperation between the slider and the spiral groove without the need for an additional drive source.

[0013] Preferably, a horizontal groove and a reset groove are provided on the rotating shaft. The horizontal groove is located at the lower part of the rotating shaft and is arranged along the circumferential direction of the rotating shaft. In the axial projection direction of the rotating shaft, both the spiral groove and the horizontal groove are semi-circular, and the two can enclose a closed ring. The reset groove is arranged along the axial direction of the rotating shaft. The inlet end of the spiral groove communicates with the outlet end of the horizontal groove, the outlet end of the spiral groove communicates with the inlet end of the reset groove, and the outlet end of the reset groove communicates with the inlet end of the horizontal groove.

[0014] The effect is that when the rotating shaft rotates to open the bottom plate, the slider slides along the horizontal groove, and at this time, the movable plate does not move longitudinally. When the rotating shaft rotates to close the bottom plate, the slider slides along the spiral groove, and at this time, the movable plate moves upward, achieving the effect that the sewage in the sewage chamber will not backwash until the sludge in the sludge chamber is discharged.

[0015] Preferably, two baffles are connected to the upper end of the movable plate, and the upper ends of the baffles longitudinally slide through the rotary drilling cylinder. The two baffles are respectively arranged on both sides of the through hole, and a space for protecting the rotating shaft is formed between the two baffles.

[0016] The effect is that by forming a space for protecting the rotating shaft, physical isolation protection can be provided for the rotating shaft, avoiding impurities carried by sewage from invading the surface of the rotating shaft, ensuring the cleanliness of the operating environment of the rotating shaft, and thus ensuring the smooth progress of subsequent cleaning work.

[0017] Preferably, the rotating shaft includes an outer rod and an inner rod. The outer rod and the inner rod are slidably and rotationally locked along the axial direction of the rotating shaft. The upper end of the outer rod is connected to the output end of the driving member, and the lower end of the inner rod penetrates the bottom of the sewage chamber and is connected to the bottom plate. A driving structure for driving the inner rod to slide relative to the outer rod is provided in the sewage chamber, so that the bottom plate can vibrate up and down.

[0018] Preferably, the driving structure includes a plurality of guide blocks and a plurality of grooves. The plurality of guide blocks are installed at intervals along the circumferential direction of the rotating shaft on the upper end of the bottom plate, and the plurality of grooves are provided at intervals along the circumferential direction of the rotating shaft on the lower end of the rotary drilling cylinder. Bevels are provided on one side of the guide blocks and the grooves facing the rotation direction of the rotating shaft. An elastic member two for driving the inner rod to reset is provided between the inner rod and the outer rod.

[0019] The effect is that during the process of the rotating shaft rotating to open and close the bottom plate, the bottom plate can vibrate up and down through the cooperation of the guide blocks and the grooves, impacting the sludge in the sludge chamber and promoting the sludge to fall.

[0020] Preferably, shovel teeth are provided at the feed inlet.

[0021] Preferably, flexible contact parts are provided on the circumferences of both the filter plate and the movable plate.

[0022] Second aspect, a construction method for an underwater tower crane foundation of the present invention uses the above-mentioned underwater tower crane foundation construction device, and it includes the following steps:

[0023] S1. Rotary excavation: The driving structure drives the rotary excavation cylinder to rotate and feed downward, and sludge and sewage will enter the inside of the sludge chamber through the feed inlet provided on the bottom plate.

[0024] S2. Separation: As the rotary excavation cylinder gradually moves downward, the sludge in the sludge chamber will gradually increase and push the filter plate to gradually move upward. At this time, the sludge in the sludge chamber will be intercepted at the lower end of the filter plate, while the sewage will float to the upper end of the filter plate. When the height of the sewage exceeds the height of the through hole, the sewage in the sludge chamber will flow into the sewage chamber until the sludge chamber is filled with sludge.

[0025] S3. Discharge: After the material is taken, the rotary excavation cylinder moves to the discharge position, and the bottom plate rotates to open the lower end of the sludge chamber. At this time, the sludge in the sludge chamber will leave the sludge chamber under the action of gravity, and at the same time, the filter plate moves downward to reset.

[0026] S4: Cleaning: After the discharge is completed, the movable plate moves upward, and the sewage in the sewage chamber will flow back into the sludge chamber through the through hole and be discharged through the lower end of the sludge chamber. During this process, the sewage can backwash the filter plate and the sludge chamber.

[0027] During operation, the driving structure drives the rotary excavation cylinder to rotate downward, and at this time, the sludge will enter the inside of the sludge chamber through the feed inlet; as the sludge in the sludge chamber gradually increases, it will push the filter plate to gradually move upward. During this process, the filter plate can intercept the sludge and allow the sewage to float until the sludge chamber is filled with sludge. At this time, all the sewage in the sludge chamber overflows into the sewage chamber to achieve solid-liquid separation; during discharge, the bottom plate rotates to open, and the sludge in the sludge chamber is discharged under the action of gravity, and at the same time, the filter plate moves downward to reset and scrape the sludge adhering to the inner wall of the sludge chamber; after the discharge is completed, the movable plate moves upward to make the sewage in the sewage chamber flow back into the sludge chamber and be discharged, and backwash and clean the filter plate and the sludge chamber.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. The present invention is provided with a separation member. The inner cavity of the rotary excavation cylinder is horizontally divided into a sludge chamber and a sewage chamber by a partition plate, and the filter plate is slidably arranged in the sludge chamber. As the sludge in the sludge chamber gradually increases, the filter plate gradually moves upward. During this process, the filter plate can squeeze the sludge entering the sludge chamber, intercept the solid particles in the sludge, and at the same time allow the sewage to float and overflow into the sewage chamber through the through hole, realizing the dynamic separation of sludge and sewage, thereby reducing the moisture contained in the sludge during subsequent discharge, increasing the density of the sludge, reducing the volume and weight of the sludge, and reducing the transportation and treatment costs.

[0030] 2. The present invention is provided with a cleaning member. During rotary drilling, the movable plate is located at the lower part of the sewage chamber, so that there is enough space in the sewage chamber for sewage to enter. When discharging, the sludge in the sludge chamber is discharged under the action of gravity. At the same time, the filter plate is reset under the action of the first elastic member. During this process, the filter plate can scrape the sludge adhering to the inner wall of the sludge chamber. After discharging, the movable plate moves upward, pushing the sewage in the sewage chamber to flow back into the sludge chamber and be discharged. During this process, the sewage can perform backwashing and cleaning on the filter plate and the sludge chamber, reducing the adhesion of sludge on the side wall of the sludge chamber, thereby improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 is a schematic diagram of the assembly structure of the rotary drilling cylinder and the bottom plate of the present invention.

[0033] Figure 3 is a schematic diagram of the structure of the rotary drilling cylinder of the present invention cut longitudinally.

[0034] Figure 4 is a schematic diagram of the structure of the rotary drilling cylinder of the present invention cut transversely.

[0035] Figure 5 is a schematic diagram of the assembly structure of the cleaning member and the rotary drilling cylinder of the present invention.

[0036] Figure 6 is a schematic diagram of the assembly structure of the rotating shaft, the cleaning member and the rotary drilling cylinder of the present invention.

[0037] Figure 7 is a schematic diagram of the assembly structure of the bottom plate and the rotating shaft of the present invention.

[0038] Figure 8 is a schematic diagram of the structure of the cleaning member of the present invention.

[0039] Reference Signs:

[0040] 1. Rotary Drilling Device; 11. Rotary Drilling Cylinder; 111. Sludge Chamber; 112. Sewage Chamber; 12. Bottom Plate; 121. Pilot Cone; 122. Feed Port; 123. Shovel Teeth; 13. Drill Pipe; 14. Power Head; 15. Mast; 2. Separation Member; 21. Partition Plate; 211. Through Hole; 22. Filter Plate; 221. Guide Rod; 23. First Elastic Member; 3. Cleaning Member; 31. Movable Plate; 311. Through Hole; 312. Slide Block; 32. Baffle Plate; 4. Rotating Shaft; 401. Spiral Groove; 402. Horizontal Groove; 403. Reset Groove; 41. Outer Rod; 42. Inner Rod; 43. Guide Block; 44. Groove; 45. Second Elastic Member; 5. Driving Member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] Embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0042] As Figures 1 to 8 shown, an underwater tower crane foundation construction device of the present invention includes a rotary drilling device 1, a separating member 2 and a cleaning member 3.

[0043] As Figure 1 and Figure 2 shown, the rotary drilling device 1 includes a rotary drilling barrel 11 and a driving structure. A cavity for accommodating sludge is provided inside the rotary drilling barrel 11. A bottom plate 12 is rotatably installed at the bottom of the rotary drilling barrel 11, and a pilot cone 121 is installed at the lower end of the bottom plate 12 for positioning the rotary drilling barrel 11 to ensure that the axis of the rotary drilling barrel 11 is consistent with the axis of the hole to be drilled. Two feed ports 122 for sludge to enter the cavity are provided on the bottom plate 12. During operation, the rotary drilling barrel 11 rotates and drills down, and the sludge enters the cavity through the feed ports 122.

[0044] Further, shovel teeth 123 are provided at each feed port 122. The shovel teeth 123 can be set as a continuously arranged convex structure, and its installation direction forms an angle with the rotation direction of the rotary drilling barrel 11. During the process of the rotary drilling barrel 11 rotating and pressing down, the shovel teeth 123 can cut into the mud layer to generate a linear cutting effect and divide and crush the lump-shaped sludge. At the same time, the centrifugal force generated by the rotation causes the crushed sludge to slide along the guiding surface of the shovel teeth 123 into the feed port 122, improving the rotary drilling efficiency.

[0045] The driving structure includes a rotating device for driving the rotary drilling barrel 11 to rotate and a feeding device for driving the rotary drilling barrel 11 to feed. Among them, the rotating device includes a drill pipe 13 and a power head 14. The drill pipe 13 is used to connect the rotary drilling barrel 11 and the power head 14, and the power head 14 is responsible for driving the drill pipe 13 and the rotary drilling barrel 11 to rotate. The feeding device includes a pressurizing structure, a main winch, a mast 15 and a luffing structure. The pressurizing structure is used to apply pressure to the power head 14 so that the rotary drilling barrel 11 can effectively cut and break the rock and soil. The main winch is used to lift and lower the drill pipe 13. The mast 15 is an installation support component for the drill pipe 13 and the power head 14 and is also a guiding mechanism for the feed of the drill pipe 13. The luffing structure is used to adjust the angle and position of the mast 15 to adapt to different drilling requirements.

[0046] As Figures 2 to 6As shown, the separator 2 includes a partition 21 and a filter plate 22. The partition 21 is fixedly mounted in the rotary drilling barrel 11, horizontally dividing the cavity into two parts, a sludge chamber 111 and a sewage chamber 112. A through-hole 211 is provided at the upper end of the partition 21. During the rotary drilling process, sewage entering the sludge chamber 111 can overflow into the sewage chamber 112 through the through-hole 211, thereby separating the sludge from the sewage. The lower end of the sludge chamber 111 is open, while the lower end of the sewage chamber 112 is sealed. The rotation of the bottom plate 12 can open or close the opening at the lower end of the sludge chamber 111, thereby closing the sludge chamber 111 to load sludge during rotary drilling and opening the sludge chamber 111 to discharge sludge during unloading.

[0047] Filter plate 22 slides longitudinally within sludge chamber 111. Its surface is provided with pores or a mesh structure (not shown) to allow sewage to pass through. A guide rod 221 is connected to the upper end of filter plate 22. The upper end of guide rod 221 longitudinally slides with rotary drum 11. An elastic member 23 is positioned between the guide rod and rotary drum 11. The elastic force of elastic member 23 is directed in the same direction as the sliding direction of filter plate 22. Elastic member 23 can be a spring, which is used to reset filter plate 22 and ensure that, in its initial state, filter plate 22 is positioned below sludge chamber 111. The shape of filter plate 22 matches that of sludge chamber 111.

[0048] During rotary drilling, as the amount of sludge in the sludge chamber 111 gradually increases, the filter plate 22 can be pushed upward, using its adaptive shape to intercept solid particles in the sludge, while allowing sewage to float up and enter the sewage chamber 112 through the opening 211, thereby achieving the separation of sludge and sewage. During this process, as the filter plate 22 moves upward, the elastic member 23 contracts and accumulates force, and continuously applies downward pressure to the filter plate 22. In conjunction with the continuous increase of sludge in the sludge chamber 111, the sludge entering the sludge chamber 111 can be squeezed. The squeezing process is conducive to separating the water contained in the sludge, increasing the density of the sludge, making it more compact, thereby reducing the volume and weight of the sludge, and reducing transportation and processing costs. In addition, during unloading, the rotary excavator 11 moves to the unloading position, the bottom plate 12 rotates open, and the sludge is discharged under the action of gravity. At the same time, the filter plate 22 is reset under the action of the elastic member 23. During this process, the filter plate 22 can continuously apply downward pressure to the sludge in the sludge chamber 111, prompting the sludge to be discharged from the sludge chamber 111.

[0049] like Figures 3 to 6As shown, the cleaning member 3 includes a movable plate 31 that slides longitudinally within the sewage chamber 112. The shape of the movable plate 31 matches the shape of the sewage chamber 112. During rotary drilling, the movable plate 31 is located at the bottom of the sewage chamber 112, so that there is sufficient space in the sewage chamber 112 for temporary storage of sewage. After unloading, the movable plate 31 gradually moves upward to reduce the space in the sewage chamber 112, pushing the sewage back into the sludge chamber 111 and out, thereby cleaning the residual sludge in the filter plate 22 and the sludge chamber 111.

[0050] The filter plate 22 and the movable plate 31 are each provided with flexible contact portions on their circumferential sides. These contact portions can conform to even minor uneven areas on the inner wall of the rotary drum 11 through elastic deformation. For example, an annular sealing ring made of rubber or silicone material can be used to ensure a good seal while preventing excessive sliding resistance. Specifically, when the filter plate 22 slides upward within the sludge chamber 111 as the sludge accumulates, the contact portions on the circumferential sides can fill the gap between the filter plate 22 and the drum wall, preventing sludge particles from entering the sewage chamber 112 from the edge. When the movable plate 31 slides up and down within the sewage chamber 112, the contact portions on its circumferential sides can form a sealing ring, effectively preventing sewage from leaking from the edges.

[0051] like Figure 2 and Figure 3 As shown, to achieve rotation of the bottom plate 12, a rotating shaft 4 is rotatably mounted within the sewage chamber 112, and a drive member 5 is mounted on the rotary drum 11 to drive the rotating shaft 4. The upper end of the rotating shaft 4 extends through the top of the sewage chamber 112 and is connected to the output end of the drive member 5. The lower end of the rotating shaft 4 extends through the bottom of the sewage chamber 112 and is connected to the bottom plate 12. Specifically, when the drive member 5 is activated, the rotating shaft 4 rotates about its own axis within the sewage chamber 112, driving the bottom plate 12 to rotate synchronously through the rigid connection at the bottom end, thereby opening and closing the lower end opening of the sludge chamber 111.

[0052] like Figures 2 to 8 As shown, to enable longitudinal sliding of the movable plate 31, the rotating shaft 4 is provided with a spiral groove 401, which extends from bottom to top along the direction of rotation of the rotating shaft 4. The movable plate 31 is provided with a through-hole 311 for the rotating shaft 4 to pass through, and a slider 312 is disposed within the through-hole 311. The movable plate 31 slides in engagement with the spiral groove 401 via the slider 312. When the driving member 5 rotates the rotating shaft 4, the spiral groove 401 guides the slider 312 to slide longitudinally along the direction of rotation of the rotating shaft 4, thereby driving the movable plate 31 to move up and down within the sewage chamber 112, achieving precise control of the movable plate 31 and ensuring its stability during movement.

[0053] like Figures 2 to 7As shown in the figure, in order to achieve the effect that the sewage in the sewage chamber 112 will not be backflushed until the sludge in the sludge chamber 111 is discharged, a horizontal groove 402 and a reset groove 403 are provided on the rotating shaft 4. The horizontal groove 402 is provided at the lower part of the rotating shaft 4 and is arranged along the circumferential direction of the rotating shaft 4. The reset groove 403 is arranged along the axial direction of the rotating shaft 4. The inlet end of the spiral groove 401 is communicated with the outlet end of the horizontal groove 402, the outlet end of the spiral groove 401 is communicated with the inlet end of the reset groove 403, and the outlet end of the reset groove 403 is communicated with the inlet end of the horizontal groove 402. Among them, in the direction of the axis projection of the rotating shaft 4, both the spiral groove 401 and the horizontal groove 402 are semi-circular, and the two can enclose a complete ring.

[0054] In this embodiment, when observing from the upper end to the lower end of the rotating shaft 4, the rotating direction of the rotating shaft 4 is counterclockwise. Specifically, during rotary drilling, the bottom plate 12 closes the sludge chamber 111, and at the same time, the movable plate 31 is located at the lowest position in the sewage chamber 112 so that there is enough space in the sewage chamber 112 for sewage to enter. At this time, the slider 312 just locates at the outlet end of the reset groove 403. During unloading, the driving member 5 drives the rotating shaft 4 to rotate counterclockwise. As the rotating shaft 4 rotates, since the outlet end of the reset groove 403 is communicated with the inlet end of the horizontal groove 402, the slider 312 will enter the horizontal groove 402 along the trend and slide along the circumferential direction of the rotating shaft 4 in the horizontal groove 402. During this process, the movable plate 31 will not move longitudinally. When the rotating shaft 4 rotates counterclockwise by 180 degrees, making the lower end opening of the sludge chamber 111 fully open, the sludge in the sludge chamber 111 will be unloaded under the action of gravity. At this time, the slider 312 just locates at the outlet end of the horizontal groove 402.

[0055] After the unloading is completed, the driving member 5 drives the rotating shaft 4 to continue rotating counterclockwise. As the rotating shaft 4 rotates, since the outlet end of the horizontal groove 402 is communicated with the inlet end of the spiral groove 401, the slider 312 will enter the spiral groove 401 along the trend and slide upward along the axial direction of the rotating shaft 4 in the spiral groove 401. During this process, the movable plate 31 will move upward to push the sewage in the sewage chamber 112 to be backflushed. When the rotating shaft 4 rotates counterclockwise by 360 degrees, making the lower end opening of the sludge chamber 111 closed again, the slider 312 just locates at the outlet end of the spiral groove 401. Since the outlet end of the spiral groove 401 is communicated with the inlet end of the reset groove 403, the slider 312 will enter the reset groove 403 along the trend. At this time, the movable plate 31 will slide downward along the reset groove 403 under the action of its own gravity, making the movable plate 31 reset to the lowest position in the sewage chamber 112. At this time, the slider 312 just locates at the outlet end of the reset groove 403 to prepare for the next rotary drilling work.

[0056] During the up-and-down movement of the movable plate 31, the sewage in the sewage chamber 112 may seep into the gap between the through-hole 311 and the rotating shaft 4, resulting in the contamination or jamming of the rotating shaft 4 by impurities in the sewage, affecting the smooth progress of subsequent cleaning work. Therefore, as Figures 4 to 8 shown, two baffles 32 are connected to the upper end of the movable plate 31, and the upper ends of the baffles 32 longitudinally slide through the rotary drilling cylinder 11, so that the movable plate 31 can longitudinally slide and cooperate with the rotary drilling cylinder 11 through the baffles 32, further improving the stability of the movable plate 31. The two baffles 32 are respectively arranged on both sides of the through-hole 311, and a sealing space for protecting the rotating shaft 4 is formed between the two baffles 32. The sealing space provides physical isolation protection for the rotating shaft 4, prevents impurities carried by the sewage from invading the surface of the rotating shaft 4, ensures the cleanliness of the operating environment of the rotating shaft 4, and improves the sealing reliability of the sewage chamber 112, thereby extending the service life of the equipment.

[0057] As Figures 3 to 7 shown, the rotating shaft 4 includes an outer rod 41 and an inner rod 42. The outer rod 41 and the inner rod 42 are slidably and rotationally locked in cooperation along the axial direction of the rotating shaft 4. Among them, the outer rod 41 adopts a hollow cylindrical structure, the inner rod 42 adopts a cylindrical structure adapted to the inner cavity of the outer rod 41, and sliding grooves and protrusions are provided on the inner wall of the outer rod 41 and the outer wall of the inner rod 42 to achieve rotational locking in cooperation. The upper end of the outer rod 41 is connected to the output end of the driving member 5, the lower end of the inner rod 42 penetrates the bottom of the sewage chamber 112 and is connected to the bottom plate 12, and a driving structure for driving the inner rod 42 to slide relative to the outer rod 41 is provided in the sewage chamber 112, so that the bottom plate 12 can vibrate up and down.

[0058] Furthermore, the driving structure includes guide blocks 43 and grooves 44. A plurality of guide blocks 43 are provided and are evenly installed on the upper end of the bottom plate 12 along the circumferential direction of the rotating shaft 4. A plurality of grooves 44 are provided and are evenly arranged on the lower end of the rotary drilling cylinder 11 along the circumferential direction of the rotating shaft 4. Among them, the number and layout of the guide blocks 43 and the grooves 44 match. One side of the guide block 43 facing the rotation direction of the rotating shaft 4 is provided with an inclined surface, and the shape of the groove 44 is adapted to the guide block 43 and also has an inclined surface to ensure that the guide block 43 can smoothly enter and exit the groove 44 when the rotating shaft 4 rotates. An elastic member II 45 is provided between the inner rod 42 and the outer rod 41, and the elastic force direction of the elastic member II 45 is the same as the sliding direction of the inner rod 42. The elastic member II 45 can be a spring and is used to drive the inner rod 42 to reset.

[0059] Specifically, when the driving member 5 drives the outer rod 41 to rotate, the inner rod 42 is synchronously rotated through anti-rotation cooperation to control the opening and closing angle of the bottom plate 12. During this process, the guiding block 43 will be synchronously rotated. When the inclined surface on the guiding block 43 contacts the inclined surface in the groove 44, the rotational force can be decomposed into a longitudinal component force through the interaction of the inclined surfaces, causing the guiding block 43 to withdraw from the groove 44 and driving the bottom plate 12 to slide downward along the axial direction of the rotating shaft 4. When the guiding block 43 rotates to the next groove 44, the second elastic member 45 drives the inner rod 42 to reset, causing the guiding block 43 to enter the groove 44 and pulling the bottom plate 12 to slide upward for reset. Through the cooperation of the guiding block 43 and the groove 44, the bottom plate 12 can generate vertical vibrations to impact the sludge in the sludge chamber 111, promoting the sludge to fall off.

[0060] As Figures 1 to 8 shown, the present invention also provides an underwater tower crane foundation construction method using the above construction device, which specifically includes the following steps:

[0061] S1. Rotary drilling: In the initial state, the bottom plate 12 closes the lower end of the sludge chamber 111, and the filter plate 22 is located at the lower part of the sludge chamber 111 under the action of the first elastic member 23. During rotary drilling, the driving structure drives the rotary drilling cylinder 11 to rotate and feed downward, and the sludge and sewage will enter the interior of the sludge chamber 111 through the feed port 122 provided on the bottom plate 12.

[0062] S2. Separation: As the rotary drilling cylinder 11 gradually moves downward, the sludge in the sludge chamber 111 will gradually increase and push the filter plate 22 to gradually move upward. At this time, the sludge in the sludge chamber 111 will be intercepted at the lower end of the filter plate 22, while the sewage will float to the upper end of the filter plate 22. When the height of the sewage exceeds the height of the through hole 211, the sewage in the sludge chamber 111 will flow into the sewage chamber 112, realizing the separation of sludge and sewage until the sludge chamber 111 is filled with sludge. At this time, the filter plate 22 is located at the uppermost end of the sludge chamber 111.

[0063] S3. Discharging: After the material is taken, the rotary drilling cylinder 11 moves upward and gradually leaves the water surface. When the rotary drilling cylinder 11 moves to the discharging position, the bottom plate 12 rotates to open the lower end of the sludge chamber 111. At this time, the sludge in the sludge chamber 111 will leave the sludge chamber 111 under the action of gravity, and at the same time, the filter plate 22 will move downward for reset under the action of the first elastic member 23. During this process, the filter plate 22 can scrape the sludge adhering to the side wall of the sludge chamber 111, reducing the adhesion of the sludge on the inner wall of the sludge chamber 111.

[0064] S4: Cleaning: After the discharging is completed, the movable plate 31 moves upward. As the movable plate 31 gradually moves upward, the sewage in the sewage chamber 112 will flow back into the sludge chamber 111 through the through port 211 and be discharged from the lower end of the sludge chamber 111. During this process, the sewage can backflush the filter plate 22 and the sludge chamber 111, achieving the cleaning of the filter plate 22 and the sludge chamber 111 and ensuring the construction efficiency.

[0065] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An underwater tower crane foundation construction device, comprising a rotary drilling device (1), wherein the rotary drilling device (1) comprises a rotary drilling drum (11) and a driving structure, wherein a cavity is provided inside the rotary drilling drum (11), and the driving structure is used to drive the rotary drilling drum (11) to rotate and feed, and is characterized in that: The invention also includes a separation member (2) and a cleaning member (3) disposed in the rotary excavation barrel (11); the separation member (2) includes a partition (21) and a filter plate (22); the partition (21) is disposed in the cavity and is used to horizontally separate the cavity into a sludge chamber (111) and a sewage chamber (112); a through-hole (211) is provided at the upper end of the partition (21); the sludge chamber (111) communicates with the sewage chamber (112) through the through-hole (211); the lower end of the sludge chamber (111) is open; and a bottom plate (12) capable of closing the sludge chamber (111) is rotatably mounted on the lower end of the rotary excavation barrel (11); the bottom plate ( 12) is provided with a feed port (122) for sludge to enter, a filter plate (22) is longitudinally slidably arranged in the sludge chamber (111), and an elastic member (23) is provided between the filter plate (22) and the rotary excavator (11), so that the filter plate (22) is located at the lower part of the sludge chamber (111) in the initial state, and the shape of the filter plate (22) is adapted to the shape of the sludge chamber (111); the lower end of the sewage chamber (112) is closed, and the cleaning member (3) includes a movable plate (31) longitudinally slidably arranged in the sewage chamber (112), and the shape of the movable plate (31) is adapted to the shape of the sewage chamber (112); A rotating shaft (4) is rotatably installed in the sewage chamber (112), and a driving member (5) for driving the rotating shaft (4) to rotate is installed on the rotary excavation barrel (11). The lower end of the rotating shaft (4) passes through the bottom of the sewage chamber (112) and is connected to the bottom plate (12); A spiral groove (401) is provided on the rotating shaft (4), and the spiral groove (401) is arranged from bottom to top along the rotation direction of the rotating shaft (4). A through hole (311) for the rotating shaft (4) to pass through is provided on the movable plate (31), and a slider (312) is provided in the through hole (311). The movable plate (31) is slidably matched with the spiral groove (401) through the slider (312).

2. The underwater tower crane foundation construction device according to claim 1, characterized in that: The rotating shaft (4) is provided with a horizontal groove (402) and a reset groove (403). The horizontal groove (402) is located at the lower part of the rotating shaft (4) and is arranged along the circumference of the rotating shaft (4). In the axial projection direction of the rotating shaft (4), the spiral groove (401) and the horizontal groove (402) are both semi-annular and can be enclosed to form a closed circular ring. The reset groove (403) is arranged along the axial direction of the rotating shaft (4). The entrance end of the spiral groove (401) is communicated with the exit end of the horizontal groove (402), the exit end of the spiral groove (401) is communicated with the entrance end of the reset groove (403), and the exit end of the reset groove (403) is communicated with the entrance end of the horizontal groove (402).

3. The underwater tower crane foundation construction device according to claim 1, characterized in that: Two baffles (32) are connected to the upper end of the movable plate (31), and the upper ends of the baffles (32) slide longitudinally through the rotary excavator barrel (11). The two baffles (32) are respectively arranged on both sides of the through hole (311), and a space for protecting the rotating shaft (4) is formed between the two baffles (32).

4. The underwater tower crane foundation construction device according to claim 1, characterized in that: The rotating shaft (4) comprises an outer rod (41) and an inner rod (42). The outer rod (41) and the inner rod (42) are slidably engaged with each other along the axial direction of the rotating shaft (4) and are rotationally locked. The upper end of the outer rod (41) is connected to the output end of the driving member (5). The lower end of the inner rod (42) passes through the bottom of the sewage chamber (112) and is connected to the bottom plate (12). A driving structure for driving the inner rod (42) to slide relative to the outer rod (41) is provided in the sewage chamber (112), so that the bottom plate (12) can vibrate up and down.

5. The underwater tower crane foundation construction device according to claim 4, characterized in that: The driving structure for driving the inner rod (42) includes a plurality of guide blocks (43) and a plurality of grooves (44). The plurality of guide blocks (43) are installed at the upper end of the base plate (12) at intervals along the circumference of the rotating shaft (4). The plurality of grooves (44) are arranged at the lower end of the rotary excavation barrel (11) at intervals along the circumference of the rotating shaft (4). The guide blocks (43) and the grooves (44) are both provided with inclined surfaces on one side facing the rotation direction of the rotating shaft (4). A second elastic member (45) for driving the inner rod (42) to reset is provided between the inner rod (42) and the outer rod (41).

6. The underwater tower crane foundation construction device according to claim 1, characterized in that: A shovel tooth (123) is provided at the feed port (122).

7. The underwater tower crane foundation construction device according to claim 1, characterized in that: Flexible contact portions are provided on the peripheral sides of the filter plate (22) and the movable plate (31).

8. An underwater tower crane foundation construction method, characterized in that: An underwater tower crane foundation construction device according to any one of claims 1 to 7 comprises the following steps: S1, rotary drilling: the rotary drilling drum (11) is driven by a driving structure to rotate and feed downward, and the sludge and sewage enter the sludge chamber (111) through the feed port (122) provided on the bottom plate (12); S2, separation: as the rotary drilling drum (11) gradually moves downward, the sludge in the sludge chamber (111) gradually increases, and pushes the filter plate (22) to gradually move upward, at which time the sludge in the sludge chamber (111) is intercepted on the filter plate (22). 2) lower end, and the sewage will float to the upper end of the filter plate (22). When the height of the sewage exceeds the height of the opening (211), the sewage in the sludge chamber (111) will flow into the sewage chamber (112) until the sludge chamber (111) is filled with sludge; S3, unloading: After the material is taken, the rotary excavator (11) moves to the unloading position, and the bottom plate (12) rotates to open the lower end of the sludge chamber (111). At this time, the sludge in the sludge chamber (111) will leave the sludge chamber (111) under the action of gravity, and the filter plate (22) moves downward to reset; S4: Cleaning: After the unloading is completed, the movable plate (31) moves upward, and the sewage in the sewage chamber (112) flows back into the sludge chamber (111) through the opening (211) and is discharged through the lower end of the sludge chamber (111). During this process, the sewage can backwash the filter plate (22) and the sludge chamber (111).

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