Self-sinking type debonding sleeve device and using method thereof

Abstract

The self-sinking type debonding sleeve device comprises a floating body, a steel pipe pile, a sleeve body, a spray head, a high-pressure water gun pump machine, a connecting pipe and a water pipe driver, a via hole allowing the steel pipe pile to penetrate through is formed in the middle of the floating body, the sleeve body is arranged on the periphery of the steel pipe pile in a sleeving mode, and the spray head is slidably connected into the sleeve body in the circumferential direction of the steel pipe pile; the water pipe driver is used for driving the spray head to rotate around the circumferential direction of the steel pipe pile, so that water flow sprayed by the spray head forms a rotating vortex around the circumferential direction of the steel pipe pile on the outer wall of the steel pipe pile, and the sleeve body moves downwards along the axial direction of the steel pipe pile along with self weight, thereby driving the rotating vortex to move downwards along the axial direction of the steel pipe pile and continuously stripping silt adhered to the outer wall of the steel pipe pile. According to the self-sinking type debonding sleeve device and the using method thereof, the friction force between a steel pipe pile and surrounding soil can be effectively reduced, and the problem that in current traditional tug-of-war pile operation, a large pile pulling ship must be relied on is solved.

Description

Technical Field

[0001] The invention relates to a building construction auxiliary device, in particular to a self-sinking debonding sleeve device and a use method thereof. Background Art

[0002] In many infrastructure construction projects, such as bridge construction, wharf construction, and offshore wind power facility installation, steel pipe piles are widely used in the construction of supporting structures due to their high strength, good bearing capacity, and adaptability to complex geological conditions. However, after these steel pipe piles have completed their mission, how to successfully remove them has become a difficult problem.

[0003] After the steel pipe piles are driven into the riverbed, they fit closely with the surrounding soil over time, and the friction between the two increases exponentially. This huge friction makes traditional pile pulling operations face many difficulties. The conventional practice is to rely on large pile pulling ships to forcibly overcome the friction with strong mechanical pulling force and pull the steel pipe piles out of the river. However, this method has many limitations in real scenarios. On the one hand, the purchase cost of large pile pulling ships is extremely high, ranging from millions or even tens of millions of yuan. For some small projects, short-term projects or construction parties with tight budgets, it is undoubtedly an unbearable huge expense. Purchasing equipment not only costs money, but also requires a lot of costs for equipment maintenance, maintenance, transportation and the employment of professional operators. This series of costs adds up to many projects. On the other hand, in some narrow rivers and cramped spaces, large pile pulling ships cannot enter the river at all. In view of the above difficulties, the industry urgently needs an innovative solution to abandon the reliance on large pile pulling ships and instead open up a new path for the removal of steel pipe piles from the perspective of reducing the friction between the steel pipe piles and the surrounding river channels. Summary of the invention

[0004] The problem to be solved by the present invention is: a self-sinking debonding sleeve device and a method of using the same can effectively reduce the friction between the steel pipe pile and the surrounding soil to solve the problem that the current traditional river pile pulling operation must rely on a larger pile pulling ship.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problem is: a self-sinking debonding sleeve device, comprising: a floating body, a steel pipe pile, a sleeve body, a nozzle, a high-pressure water gun pump, a connecting pipe, and a water pipe drive. The floating body has buoyancy and a through hole is opened in the middle for the steel pipe pile to pass through. The sleeve body is sleeved on the outer periphery of the steel pipe pile, and the nozzle is connected to the sleeve body along the circumferential sliding direction of the sleeve body. After the high-pressure water gun pump sucks in water flow, it delivers high-pressure water flow to the nozzle through the connecting pipe and sprays it from the output port of the nozzle. The water pipe drive is used to drive the nozzle to rotate circumferentially around the inner wall of the sleeve body, so that the water flow sprayed from the output port of the nozzle rotates around the outer wall of the steel pipe pile. At the same time, the sleeve body moves downward along the axial direction of the steel pipe pile with its own weight, thereby forming a spiral downward high-speed vortex at the outer wall of the steel pipe pile to continuously peel off the mud and sand adhering to the outer wall of the steel pipe pile.

[0006] The installation bearing position of the device is provided by a floating body with buoyancy, and the high-pressure water gun pump in the device delivers high-pressure water flow to the nozzle through a connecting pipe. The nozzle rotates circumferentially along the inner wall of the sleeve body under the action of the water pipe drive. In this way, the water flow ejected from the nozzle output port can rotate circumferentially around the outer wall of the steel pipe pile, and the sleeve body will move downward along the axial direction of the steel pipe pile with its own weight. During the downward movement of the sleeve body, the internal water flow will form a high-speed vortex similar to a spiral, thereby continuously stripping the silt at different positions on the outer wall of the steel pipe pile. When the silt on the outer wall of the steel pipe pile is effectively stripped, the friction between the steel pipe pile and the surrounding soil is mainly the friction between the pile body and the soil body, and there is no additional friction caused by the adhesion of silt, and the friction is greatly reduced. Compared with traditional pile pulling, in traditional river channel pile pulling operations, due to factors such as silt adhesion, the friction between the steel pipe pile and the surrounding soil is very large, and it is necessary to rely on a larger pile pulling ship to provide a large enough pile pulling force to pull the pile out. This self-sinking debonding sleeve device effectively reduces the friction caused by the adhesion of silt by rotating eddy currents, thus reducing the external force required to pull out the steel pipe piles. This eliminates the need for large pile pulling vessels to provide huge pile pulling forces, reduces the reliance on large equipment, and solves the problem of having to rely on larger pile pulling vessels in the current traditional river pile pulling operations.

[0007] And unlike the common scheme of arranging multiple nozzles in a ring around the outer circumference of the steel pipe pile, this spiral downward water flow has a more comprehensive coverage range, and there will be no cleaning dead corners between the nozzles like the ring-arranged nozzles, and it can remove mud and sand from the outer wall of the steel pipe pile in all directions. Or it is only a rotating water flow, and the nozzle only rotates around the circumference of the steel pipe pile to spray water. In this way, the water flow flushes on each circumferential level, but the cleaning connection between adjacent circumferential levels mainly depends on the diffusion and penetration of the water flow. It is like on the surface of a cylinder, each time only the circumference of the same height is cleaned. If you want to clean the side of the entire cylinder, you need to fully clean the circumference at each height before you can complete it. The spiral downward water flow, while rotating around the circumference of the steel pipe pile, also moves downward along the axial direction of the steel pipe pile. This is just like when cleaning the side of the cylinder, the water flow flushes along the path of the spiral line, and it can complete the cleaning of a certain axial distance during a rotation. In this way, in the same amount of time, the spiral downward water flow can cover more outer wall area of ​​the steel pipe pile, making the cleaning efficiency higher.

[0008] Further, the water pipe drive includes a rotary spray assembly arranged at the lower part of the sleeve body, and the rotary spray assembly includes a third bearing outer ring, a third bearing inner ring, and a rotary spray caliper. The third bearing outer ring is fixedly connected to the lower part of the inner wall of the sleeve, and the third bearing inner ring is connected to the outer ring of the third bearing along the circumferential sliding direction of the steel pipe pile. The rotary spray caliper is fixedly connected to the inner ring of the third bearing, and the rotary spray caliper is used to clamp the spray head. The third bearing outer ring is fixedly connected to the lower part of the inner wall of the sleeve, and the third bearing inner ring is connected to the outer ring of the third bearing along the circumferential sliding direction of the steel pipe pile. This bearing structure enables the rotary spray caliper (fixedly connected to the inner ring of the third bearing) to flexibly rotate around the steel pipe pile. It can provide stable rotation support for the spray head, ensuring that the spray head can smoothly rotate around the steel pipe pile under the action of high-pressure water flow, thereby better forming a rotating vortex. The rotary spray caliper is used to clamp the spray head, which can ensure the position of the spray head during the rotation process.

[0009] Furthermore, the water pipe drive also includes a synchronous frame, a first bearing outer ring, a first bearing inner ring, a synchronous caliper, and a driving handle. The synchronous frame is fixed on the floating body, the first bearing outer ring is fixed on the synchronous frame, the first bearing inner ring is connected to the first bearing outer ring along the circumference of the steel pipe pile by sliding, the synchronous caliper is fixedly connected to the first bearing inner ring, and the driving handle is installed on the synchronous caliper. The synchronous caliper is used to clamp the outer wall of the connecting pipe, and the driving handle applies thrust to the driving handle so that the connecting pipe rotates around the outer circumference of the steel pipe pile with the synchronous caliper, and the connecting pipe drives the nozzle to rotate around the circumference of the steel pipe pile. The synchronous frame is fixed on the floating body, providing a stable support foundation for the entire driving structure. The first bearing outer ring is fixed on the synchronous frame, and the first bearing inner ring is connected to the first bearing outer ring along the circumference of the steel pipe pile by sliding. This structure enables the components connected to the first bearing inner ring to smoothly rotate around the steel pipe pile, ensuring the flexibility and stability of the driving process. The synchronous caliper is fixedly connected to the first bearing inner ring, and its function is to firmly clamp the outer wall of the connecting pipe. The driving handle is installed on the synchronous caliper. The operator can easily drive the synchronous caliper to rotate around the outer circumference of the steel pipe pile by applying thrust to the driving handle. Since the connecting pipe is clamped by the synchronous caliper, the connecting pipe will rotate accordingly, thereby driving the sprinkler head to rotate around the circumference of the steel pipe pile.

[0010] Furthermore, the synchronous frame includes a synchronous ring, at least three counterweight legs that are spaced apart and extend radially outward at the outer wall of the synchronous ring, and a counterweight base located at the bottom of the extended end of the counterweight leg, the first bearing outer ring is fixed on the inner wall of the synchronous ring, and the counterweight base is fixedly connected to the floating body. When the operator drives the connecting pipe and the nozzle to rotate around the steel pipe pile through the driving handle, a certain centrifugal force and vibration will be generated. The added weight of the counterweight legs and the counterweight base can balance the forces generated by the rotation and prevent the synchronous frame and related components from shaking or deflecting.

[0011] Furthermore, a retaining assembly is provided at the upper part of the sleeve body, and the retaining assembly includes a second bearing outer ring, a second bearing inner ring, and a retaining ring. The second bearing outer ring is fixedly connected to the upper inner wall of the sleeve body, and the second bearing inner ring is slidably connected to the second bearing outer ring along the circumference of the steel pipe pile. The retaining ring is fixedly connected to the second bearing inner ring, and a retaining hole matching the outer diameter of the steel pipe pile is provided at the axis of the retaining ring, so that the axis of the sleeve body is consistent with the axis of the steel pipe pile. The consistency of the axis of the sleeve body and the steel pipe pile is crucial for the uniform action of the rotating vortex generated by the nozzle on the outer wall of the steel pipe pile. If the axes of the two are inconsistent, the action of the rotating vortex on the outer wall of the steel pipe pile will be uneven, and some areas may be over-scoured, while some areas are under-scoured, resulting in incomplete silt stripping.

[0012] Furthermore, a plurality of connecting ribs are formed on the outer periphery of the retaining ring and extend radially outward at intervals, and a plurality of connecting grooves matching the extended ends of the connecting ribs are radially provided on the corresponding inner ring of the second bearing, and the extended ends of the connecting ribs are inserted into the connecting grooves and fixedly connected to the inner ring of the bearing ring and the retaining ring by welding, and a connecting hole is provided in the middle of one of the connecting ribs along the vertical direction, and the connecting hole is used for the connecting pipe to pass through. The matching and welding connection of the connecting ribs and the connecting grooves enhances the connection stability between the retaining ring and the inner ring of the second bearing, thereby ensuring the structural strength and stability of the entire retaining assembly.

[0013] Furthermore, a plurality of counterweight blocks are evenly distributed at intervals around the circumference in the middle of the inner wall of the sleeve body.

[0014] Furthermore, the middle part of the inner wall of the sleeve body protrudes radially inward along the circumferential interval to form a mounting flange that is the same as the number of counterweight blocks, the upper part of the mounting flange protrudes upward to form a buckle part, a slot is formed between the buckle part and the inner wall of the sleeve body, the lower end of the counterweight block protrudes downward near the inner wall of the sleeve body to form a plug-in part, the plug-in part is vertically inserted into the slot to achieve vertical limit of the counterweight block, the two ends of the slot extend vertically upward to form a slot foot, one end of the slot foot is connected to the inner wall of the sleeve body, and the other end is a side buckle part extending from another slot arranged on the slot, the side buckle part is used to guide the plug-in part when it is vertically inserted into the slot and to limit it horizontally. When the sleeve body is in operation, its own weight drives the rotating vortex to move downward, and the counterweight block will not affect the overall performance of the device due to its own shaking or displacement.

[0015] Furthermore, a side nozzle is provided on the side wall of the nozzle, and the spray direction of the side nozzle is perpendicular to the circumference of the inner wall of the steel pipe pile. On the basis of the rotating vortex generated by the nozzle to peel off the mud and sand on the outer wall of the steel pipe pile, the setting of the side nozzle provides additional power and method for the mud and sand peeling. The jet water flow perpendicular to the circumference of the inner wall of the steel pipe pile can impact the mud and sand from different angles, form a synergistic effect with the rotating vortex, and more comprehensively peel off the mud and sand on the outer wall of the steel pipe pile.

[0016] Furthermore, the lower end surface of the sleeve body is spaced downward along the circumference of the tube to form a plurality of stop blades. When the stop blades are inserted into the mud and sand, the structure of the mud and sand will be destroyed, making it looser, creating better working conditions for the rotating vortex sprayed by the nozzle, and further improving the efficiency of mud and sand stripping.

[0017] A method for using a self-sinking debonding sleeve device, the specific steps are as follows: S1 Pretreatment of steel pipe piles: Observe the steel pipe piles on site, locate the exposed parts, and cut them off using cutting equipment; Cutting off the exposed part of the steel pipe pile can avoid interference with subsequent installation of the floating body and sleeve device, making the operation space clearer and more convenient, and preparing for subsequent device installation and work.

[0018] S2 Installing the floating body: placing the steel pontoons at the periphery of the steel pipe piles, fixing the steel pontoons to each other with fasteners to form floating platforms on both sides of the steel pipe piles, installing connecting platforms on the other two sides of the steel pipe piles, connecting the floating platforms to each other to form a floating body with through holes; The main function of the floating body is to provide buoyancy support for the entire self-sinking debonding sleeve device, so that it can work stably on the water surface. Through the combination of the steel pontoon and the connecting platform, a floating platform with sufficient buoyancy and stability is constructed to ensure that the subsequent device components can be installed and operated in the appropriate position.

[0019] S3 Install lifting equipment: Select H-shaped steel and fix it vertically on the floating platform. Connect the horizontal H-shaped steel to the upper ends of the two vertical H-shaped steels and install the electric hoist in the middle of the horizontal H-shaped steel. As a lifting equipment, the electric hoist provides lifting power for the subsequent installation and adjustment of the synchronous frame, sleeve body and other components, making it convenient to lift these heavier components to the appropriate location, improving the convenience of device installation and the safety of operation.

[0020] S4 Install the synchronous frame: lift the synchronous frame to the top of the steel pipe pile by electric hoist, adjust the axis of the synchronous ring to coincide with the axis of the steel pipe pile, and fix the counterweight base on the counterweight frame to the floating body; The installation of the synchronous frame needs to ensure that its axis coincides with the axis of the steel pipe pile, so as to ensure that the rotating vortex of the subsequent nozzle can act evenly on the outer wall of the steel pipe pile, avoiding problems such as uneven sand stripping caused by inconsistent axes. At the same time, fixing the counterweight base to the floating body can ensure that the synchronous frame is stably installed on the floating body, ensuring its stability in subsequent operations.

[0021] S5 Sleeve body fluid connection: Install a high-pressure water gun pump on the floating body, connect one end of the connecting pipe to the high-pressure water gun pump output port, and pass the other end through the sleeve body connection hole to connect to the nozzle input port; A fluid connection is established from the high-pressure water gun pump to the nozzle, so that the high-pressure water flow generated by the high-pressure water gun pump can be smoothly delivered to the nozzle, providing water flow power for the nozzle to generate a rotating vortex.

[0022] S6 Place the sleeve body: Use the electric hoist to lift the sleeve body and make it pass through the inner ring of the first bearing on the inner wall of the synchronization ring. Lower the sleeve body so that the upper end of the steel pipe pile is inserted into the sleeve body until the locking hole of the locking ring is sleeved on the outer wall of the steel pipe pile. Continue to lower the sleeve body so that the foot blade at the bottom of the sleeve body is wedged into the mud layer of the riverbed, and then release the connection between the electric hoist and the sleeve body. The sleeve body is accurately installed on the steel pipe pile. The positioning hole ensures the coincidence of the axis of the sleeve body and the steel pipe pile. The stop blade is wedged into the mud layer of the riverbed to provide initial support and positioning for the sinking of the sleeve body. In the subsequent mud and sand stripping process, the stop blade can also play a role in assisting the loosening of mud.

[0023] S7 drive connection: clamp the wall of the synchronous pipe at the synchronous caliper, and adjust the clamping force so that the synchronous caliper can drive the nozzle; By effectively clamping the synchronous pipe with the synchronous caliper, when the driving handle is pushed subsequently, the synchronous caliper can drive the connecting pipe and the nozzle to rotate around the outer circumference of the steel pipe pile, thereby driving the nozzle to rotate and preparing for the generation of a rotating vortex.

[0024] S8 Removing silt: Start the high-pressure water gun pump to spray high-pressure water through the output port and side nozzle of the nozzle, and then push the driving handle in the spraying direction opposite to the nozzle to make the connecting pipe rotate around the outer periphery of the steel pipe pile with the synchronous caliper. The connecting pipe drives the nozzle to rotate around the circumference of the steel pipe pile. The water sprayed from the nozzle and the side nozzle forms a rotating vortex at the connection between the steel pipe pile and the riverbed, and the soil forms a sac-shaped cavity under the scouring of the rotating vortex, so as to provide space for the sleeve body to sink with its own weight, and can continue to move axially downward to form a spiral downward vortex, and continuously peel off the silt adhering to the outer wall of the steel pipe pile until it sinks to the preset peeling depth; The rotating vortex formed by the high-pressure water flow and the sinking of the sleeve body due to its own weight can strip the mud and sand from the outer wall of the steel pipe pile, reduce the friction between the steel pipe pile and the surrounding soil, and prepare for the subsequent pile extraction operation.

[0025] S9 Removal of the self-sinking debonding sleeve device: Separate the connecting pipe from the output port of the high-pressure water gun pump, disengage the synchronous clamp from the connecting pipe, remove the synchronous frame, and use the electric hoist to lift the synchronous frame and the sleeve body off the floating platform in turn, and disconnect the connecting platform from the floating platform; After the silt stripping is completed, the self-sinking debonding sleeve device will be dismantled and the site will be cleaned up to make room for the subsequent pile extraction operation.

[0026] S10 Pile extraction: Within 24 hours after completing the above steps, use the crane on the operation ship to connect with the steel pipe pile and extract it; After the mud and sand stripping operation of the self-sinking debonding sleeve device, the friction between the steel pipe piles and the surrounding soil has been greatly reduced. At this time, the steel pipe piles can be pulled out relatively easily using a crane to complete the entire pile pulling operation, solving the problem of traditional pile pulling operations relying on large pile pulling ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall assembly of the present invention; Figure 2A side view of a synchronous frame of the present invention; Figure 3 is a cross-sectional view of the sleeve body of the present invention; Figure 4 A top view of the sleeve body of the present invention; Figure 5 is a cross-sectional view of a sleeve body of the present invention; Figure 6 A top view of the synchronous frame of the present invention; Figure 7 Schematic diagram of the steel pipe pile to be removed in the present invention, the box in the figure is the removal part in step S1; Figure 8 It is a top view of the installation of the floating body and the steel pipe pile of the present invention; Fig. 9 It is a schematic diagram of the synchronous frame for hoisting the electric hoist of the present invention; Fig.10 It is a schematic diagram of the present invention when in use.

[0028] Illustration: 1. Floating body; 1.1. Through hole; 1.2. Floating platform; 1.2.1. Steel pontoon; 1.3. Connecting platform; 2. Steel pipe pile; 3. Sleeve body; 3.1. Second bearing outer ring; 3.2. Second bearing inner ring; 3.2.1. Connecting groove; 3.3. Positioning ring; 3.3.1. Positioning hole; 3.4. Connecting rib; 3.4.1. Connecting hole; 3.5. Third bearing outer ring; 3.6. Third bearing inner ring; 3.7. Spray caliper; 3.8. Counterweight; 3.8.1. Connecting part ; 3.9, mounting flange; 3.10, buckle part; 3.11, slot; 3.12, slot foot; 3.13, side buckle part; 3.14, stop blade; 4, nozzle; 4.1, side nozzle; 5, high-pressure water gun pump; 6, connecting pipe; 7, water pipe drive; 7.1, synchronous frame; 7.1.1, synchronous ring; 7.1.2, counterweight support foot; 7.1.3, counterweight base; 7.2, first bearing outer ring; 7.3, first bearing inner ring; 7.4, synchronous caliper; 7.5, driving handle; 8, H-shaped steel; 9, electric hoist. DETAILED DESCRIPTION

[0029] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The present invention can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0030] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0031] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0033] See also Figure 1 A self-sinking debonding sleeve device comprises a floating body 1, a steel pipe pile 2, a sleeve body 3, a nozzle 4, a high-pressure water gun pump 5, a connecting pipe 6 and a water pipe drive 7 and other components.

[0034] The floating body 1 has buoyancy, and a through hole 1.1 is provided at the center thereof, through which the steel pipe pile 2 passes. The sleeve body 3 is sleeved on the outer periphery of the steel pipe pile 2, and the nozzle 4 is slidably connected in the sleeve body 3 along the circumference of the steel pipe pile 2. The connection method between the sleeve body 3 and the steel pipe pile 2 ensures that the nozzle 4 can flexibly rotate in the annular space formed by the two, while ensuring that the movement of the sleeve body 3 is guided and supported by the steel pipe pile 2.

[0035] The high-pressure water gun pump 5 can transmit the sucked water flow to the nozzle 4 through the connecting pipe 6, and then spray it out from the output port of the nozzle 4. The high-pressure water gun pump 5 and the connecting pipe 6 are connected by a flange and a sealing gasket to ensure that the water flow will not leak during the transmission process. The connecting pipe 6 and the nozzle 4 are threadedly connected, which is convenient for disassembly and maintenance, and can also ensure the sealing and connection strength of the connection to withstand the high pressure of the water flow.

[0036] Please refer to Figure 2 The water pipe drive 7 is composed of a synchronous frame 7.1, a first bearing outer ring 7.2, a first bearing inner ring 7.3, a synchronous caliper 7.4 and a driving handle 7.5. The synchronous frame 7.1 is fixed on the floating body 1. The connection between the synchronous frame 7.1 and the floating body 1 can be bolted. This connection method is firm and reliable and easy to install and disassemble. The first bearing outer ring 7.2 is fixed on the synchronous frame 7.1. The two can be fixedly connected by welding to ensure the stability of the structure; the first bearing inner ring 7.3 is connected to the first bearing outer ring 7.2 in the circumferential sliding direction of the steel pipe pile 2. This sliding connection allows the inner ring to rotate relative to the outer ring through the precise matching of the inner and outer rings of the bearing, and can withstand certain axial and radial forces. The synchronous caliper 7.4 is fixedly connected to the first bearing inner ring 7.3, and is connected by welding or high-strength bolts to ensure the stability of the connection between the two. The driving handle 7.5 is installed on the synchronous caliper 7.4 and fixed with nuts and bolts to facilitate later replacement and maintenance.

[0037] Please refer to Figure 3 A jet spray assembly is provided at the lower part of the sleeve body 3, and the assembly includes a third bearing outer ring 3.5, a third bearing inner ring 3.6 and a jet spray caliper 3.7. The third bearing outer ring 3.5 is fixed to the lower part of the inner wall of the sleeve body 3, and can be firmly connected to the sleeve body 3 by welding to ensure the integrity of the structure; the third bearing inner ring 3.6 is slidably connected to the third bearing outer ring 3.5 along the circumference of the steel pipe pile 2, and its sliding connection is based on the design principle of the bearing to ensure the smoothness of rotation and the bearing capacity; the jet spray caliper 3.7 is fixedly connected to the third bearing inner ring 3.6, and can be bolted or welded to ensure that it will not loosen during operation, and its main function is to clamp the nozzle 4.

[0038] Please refer to Figure 3 and Figure 4 The upper part of the sleeve body 3 is equipped with a retaining assembly, which consists of a second bearing outer ring 3.1, a second bearing inner ring 3.2 and a retaining ring 3.3. The second bearing outer ring 3.1 is fixed to the upper part of the inner wall of the sleeve body 3, and can be connected to the sleeve body 3 by welding to ensure that its position is fixed. The second bearing inner ring 3.2 is connected to the second bearing outer ring 3.1 along the circumferential sliding direction of the steel pipe pile 2, and based on the sliding characteristics of the bearing, the inner ring can rotate smoothly. The retaining ring 3.3 is fixedly connected to the second bearing inner ring 3.2. A retaining hole 3.3.1 matching the outer diameter of the steel pipe pile 2 is provided at the axis of the retaining ring 3.3, which ensures that the axis of the sleeve body 3 is consistent with the axis of the steel pipe pile 2. In addition, four connecting ribs 3.4 are extended radially outward at intervals from the outer circumference of the retaining ring 3.3, and a connecting groove 3.2.1 matching the extended end of the connecting rib 3.4 is radially opened on the corresponding second bearing inner ring 3.2. The extended end of the connecting rib 3.4 is inserted into the connecting groove 3.2.1 and the bearing inner ring and the retaining ring 3.3 are fixedly connected by welding, and a connecting hole 3.4.1 is opened in the middle of one of the connecting ribs 3.4 in the vertical direction, and this connecting hole 3.4.1 is provided for the connecting pipe 6 to pass through.

[0039] Please refer to Figure 3 and Figure 5 , a plurality of counterweights 3.8 are evenly distributed around the circumferential intervals in the middle of the inner wall of the sleeve body 3. The specific structure is that the middle of the inner wall of the sleeve body 3 radially protrudes inward along the circumferential intervals to form a mounting flange 3.9 whose number is the same as the counterweights 3.8, the upper part of the mounting flange 3.9 protrudes upward to form a buckle part 3.10, and a clamping groove 3.11 is formed between the buckle part 3.10 and the inner wall of the sleeve body 3. The lower end of the counterweight 3.8 protrudes downward near the inner wall of the sleeve body 3 to form a plug-in part 3.8.1, and the plug-in part 3.8.1 is vertically inserted downward into the clamping groove 3.11 to realize the vertical limit of the counterweight 3.8. The counterweight block 3.8 and the mounting flange 3.9 can be relatively fixed by the cooperation of the slot 3.11 and the plug-in part 3.8.1. At the same time, the two ends of the slot 3.11 extend vertically upward to form a slot foot 3.12. One end of the slot foot 3.12 is connected to the inner wall of the sleeve body 3, and the other end is a side buckle part 3.13. The side buckle part 3.13 is used to guide and horizontally limit the plug-in part 3.8.1 when it is vertically inserted into the slot 3.11.

[0040] Please refer to Figure 3 The side wall of the nozzle 4 is also provided with a side nozzle 4.1, whose spraying direction is perpendicular to the inner wall circumference of the steel pipe pile 2. The nozzle 4 itself has a compact structure, and the side nozzle 4.1 is connected to the nozzle body 4 by integrated molding or welding to ensure its strength and sealing.

[0041] Please refer to Figure 6The outer wall of the synchronous ring 7.1.1 in the synchronous frame 7.1 extends radially outward at intervals, and four counterweight legs 7.1.2 are provided at the bottom of the extended ends of these counterweight legs 7.1.2. The first bearing outer ring 7.2 is fixed on the inner wall of the synchronous ring 7.1.1, and the counterweight base 7.1.3 is fixedly connected to the floating body 1. The synchronous ring 7.1.1 and the counterweight legs 7.1.2 can be connected by welding, and the counterweight legs 7.1.2 and the counterweight base 7.1.3 can be bolted or welded to ensure the firmness and stability of the connection, thereby providing the necessary counterweight and stability for the device.

[0042] Please refer to Figures 7 to 10 , a method for using a self-sinking debonding sleeve device, the specific steps are as follows: S1 Pretreatment of steel pipe pile 2: Observe the steel pipe pile 2 on site, locate the part exposed above the water surface, and cut it off using cutting equipment; S2 Installing the floating body 1: placing the steel pontoons 1.2.1 at the periphery of the steel pipe pile 2, fixing the steel pontoons 1.2.1 to each other with fasteners to form a floating platform 1.2 on both sides of the steel pipe pile 2, installing connecting platforms 1.3 on the other two sides of the steel pipe pile 2, connecting the floating platforms 1.2 to each other to form a floating body 1 with a through hole 1.1; S3 Installing the hoisting equipment: Select H-shaped steel 8, fix it vertically on the floating platform 1.2, connect the horizontal H-shaped steel 8 to the upper ends of the two vertical H-shaped steels 8, and install the electric hoist 9 in the middle of the horizontal H-shaped steel 8; S4 Install the synchronous frame 7.1: lift the synchronous frame 7.1 to the top of the steel pipe pile 2 by the electric hoist 9, adjust the axis of the synchronous ring 7.1.1 to coincide with the axis of the steel pipe pile 2, and fix the counterweight base 7.1.3 on the counterweight frame to the floating body 1; S5 Liquid connection of sleeve body 3: Install high-pressure water gun pump 5 on floating body 1, connect one end of connecting pipe 6 to the output port of high-pressure water gun pump 5, and connect the other end through connecting hole 3.4.1 of sleeve body 3 to the input port of nozzle 4; S6 Place the sleeve body 3: Use the electric hoist 9 to lift the sleeve body 3, so that it passes through the first bearing inner ring 7.3 on the inner wall of the synchronization ring 7.1.1, and lower the sleeve body 3 so that the upper end of the steel pipe pile 2 is inserted into the sleeve body 3 until the locking hole 3.3.1 of the locking ring 3.3 is sleeved on the outer wall of the steel pipe pile 2, and then continue to lower the sleeve body 3 so that the bottom stop blade 3.14 of the sleeve body 3 is wedged into the riverbed mud layer, and then release the connection between the electric hoist 9 and the sleeve body 3; S7 drive connection: clamp the wall of the synchronous pipe at the synchronous clamp 7.4, and adjust the clamping force so that the synchronous clamp 7.4 can drive the nozzle 4; S8 Removing silt: Start the high-pressure water gun pump 5, so that the high-pressure water flow is ejected through the output port of the nozzle 4 and the side nozzle 4.1, and then push the driving handle 7.5 in the ejection direction opposite to the nozzle to make the connecting pipe 6 rotate around the outer periphery of the steel pipe pile 2 with the synchronous caliper 7.4, and the connecting pipe 6 drives the nozzle 4 to rotate around the circumference of the steel pipe pile 2. The water flow ejected by the nozzle 4 and the side nozzle 4.1 forms a rotating vortex at the connection between the steel pipe pile 2 and the riverbed, and the soil body forms a sac-shaped cavity under the scouring of the rotating vortex, so as to provide space for the sleeve body 3 to sink with its own weight, and can continue to move axially downward to form a spiral downward vortex, and continuously peel off the silt adhering to the outer wall of the steel pipe pile 2 until it sinks to a preset peeling depth; S9 Removing the self-sinking debonding sleeve device: Separate the connecting pipe 6 from the output port of the high-pressure water gun pump 5, disengage the synchronous caliper 7.4 from the connecting pipe 6, remove the synchronous frame 7.1, and lift the synchronous frame 7.1 and the sleeve body 3 off the floating platform 1.2 by the electric hoist 9, and disconnect the connecting platform 1.3 from the floating platform 1.2; S10 Pile extraction: within 24 hours after completing the above steps, use the crane on the work vessel to connect with the steel pipe pile 2 and extract it.

[0043] The above description is only for the best embodiment of the present invention, but it should not be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A self-sinking debonding sleeve device, characterized in that: include: A floating body (1), a steel pipe pile (2), a sleeve body (3), a nozzle (4), a high-pressure water gun pump (5), a connecting pipe (6), and a water pipe drive (7). The floating body (1) has buoyancy and is provided with a through hole (1.1) in the middle for the steel pipe pile (2) to pass through. The sleeve body (3) is sleeved on the outer circumference of the steel pipe pile (2). The nozzle (4) is connected to the sleeve body (3) by sliding along the circumference of the sleeve body (3). The high-pressure water gun pump (5) sucks in water and then passes through the connecting pipe. (6) high-pressure water flow is delivered to the nozzle (4) and sprayed out from the output port of the nozzle (4), and the water pipe drive (7) is used to drive the nozzle (4) to rotate circumferentially around the inner wall of the sleeve body (3), so that the water flow sprayed out from the output port of the nozzle (4) rotates around the outer wall of the steel pipe pile (2), and at the same time, the sleeve body (3) moves downward along the axial direction of the steel pipe pile (2) due to its own weight, thereby forming a spiral downward high-speed vortex on the outer wall of the steel pipe pile (2) to continuously peel off the mud and sand adhering to the outer wall of the steel pipe pile (2).

2. A self-sinking debonding sleeve device according to claim 1, characterized in that: The water pipe drive (7) comprises a rotary spray assembly arranged at the lower part of the sleeve body (3), the rotary spray assembly comprising a third bearing outer ring (3.5), a third bearing inner ring (3.6), and a rotary spray caliper (3.7), the third bearing outer ring (3.5) is fixedly connected to the lower part of the inner wall of the sleeve, the third bearing inner ring (3.6) is slidably connected in the third bearing outer ring (3.5) along the circumference of the steel pipe pile (2), the rotary spray caliper (3.7) is fixedly connected to the third bearing inner ring (3.6), and the rotary spray caliper (3.7) is used to clamp the spray head (4).

3. A self-sinking debonding sleeve device according to claim 1, characterized in that: The water pipe drive (7) further comprises a synchronous frame (7.1), a first bearing outer ring (7.2), a first bearing inner ring (7.3), a synchronous caliper (7.4), and a driving handle (7.5). The synchronous frame (7.1) is fixed on the floating body (1), the first bearing outer ring (7.2) is fixed on the synchronous frame (7.1), the first bearing inner ring (7.3) is connected to the first bearing outer ring (7.2) in a circumferential sliding manner along the steel pipe pile (2), the synchronous caliper (7.4) is fixedly connected to the first bearing inner ring (7.3), and the driving handle (7.5) is installed on the synchronous caliper (7.4). The synchronous caliper (7.4) is used to clamp the outer wall of the connecting pipe (6), and a thrust is applied to the driving handle (7.5) so that the connecting pipe (6) rotates around the outer periphery of the steel pipe pile (2) along with the synchronous caliper (7.4), and the connecting pipe (6) drives the nozzle (4) to rotate around the circumference of the steel pipe pile (2).

4. A self-sinking debonding sleeve device according to claim 1, characterized in that: A retaining assembly is arranged at the upper part of the sleeve body (3), and the retaining assembly comprises a second bearing outer ring (3.1), a second bearing inner ring (3.2), and a retaining ring (3.3); the second bearing outer ring (3.1) is fixedly connected to the upper part of the inner wall of the sleeve body (3); the second bearing inner ring (3.2) is slidably connected to the second bearing outer ring (3.1) along the circumference of the steel pipe pile (2); the retaining ring (3.3) is fixedly connected to the second bearing inner ring (3.2); a retaining hole (3.3.1) matching the outer diameter of the steel pipe pile (2) is arranged at the axis center of the retaining ring (3.3) so that the axis center of the sleeve body (3) is consistent with the axis center of the steel pipe pile (2).

5. A self-sinking debonding sleeve device according to claim 4, characterized in that: A plurality of connecting ribs (3.4) are formed on the outer circumference of the retaining ring (3.3) at intervals and extend radially outwards. Correspondingly, a plurality of connecting grooves (3.2.1) matching the extended ends of the connecting ribs (3.4) are radially provided on the second bearing inner ring (3.2). The extended ends of the connecting ribs (3.4) are inserted into the connecting grooves (3.2.1) and fixedly connected the inner ring of the bearing ring and the retaining ring (3.3) by welding. A connecting hole (3.4.1) is provided in the middle of one of the connecting ribs (3.4) in the vertical direction. The connecting hole (3.4.1) is used for the connecting pipe (6) to pass through.

6. A self-sinking debonding sleeve device according to claim 1, characterized in that: A plurality of counterweight blocks (3.8) are evenly distributed at intervals around the circumference in the middle of the inner wall of the sleeve body (3).

7. A self-sinking debonding sleeve device according to claim 6, characterized in that: The middle part of the inner wall of the sleeve body (3) protrudes radially inward at circumferential intervals to form mounting flanges (3.9) whose number is the same as the counterweight blocks (3.8); the upper part of the mounting flanges (3.9) protrudes upward to form a buckle portion (3.10); a clamping groove (3.11) is formed between the buckle portion (3.10) and the inner wall of the sleeve body (3); the lower end of the counterweight block (3.8) protrudes downward near the inner wall of the sleeve body (3) to form an inserting portion (3.8.1); the inserting portion (3.8.1) is inserted vertically downward. The plug-in portion (3.8.1) is inserted into the slot (3.11) to realize vertical limit of the counterweight (3.8), and the two ends of the slot (3.11) extend vertically upward to form a slot foot (3.12), one end of the slot foot (3.12) is connected to the inner wall of the sleeve body (3), and the other end is arranged on the slot (3.11) relative to a side buckle (3.13) extending from another slot (3.11), and the side buckle (3.13) is used to guide the plug-in portion (3.8.1) when it is vertically inserted into the slot (3.11) and to limit its horizontal position.

8. The self-sinking debonding sleeve device according to claim 1, characterized in that: A side nozzle (4.1) is provided on the side wall of the nozzle head (4), and the spraying direction of the side nozzle (4.1) is perpendicular to the circumference of the inner wall of the steel pipe pile (2).

9. A self-sinking debonding sleeve device according to claim 1, characterized in that: A plurality of stop blades (3.14) are formed on the lower end surface of the sleeve body (3) and protrude downward at intervals along the circumference of the tube.

10. A method for using a self-sinking debonding sleeve device, characterized in that: The following steps are involved: S1 Pretreatment of steel pipe piles (2): observe the on-site steel pipe piles (2), locate the exposed parts above the water surface, and cut them off using cutting equipment; S2 Installing the floating body (1): placing the steel pontoons (1.2.1) on the outer periphery of the steel pipe pile (2), fixing the steel pontoons (1.2.1) to each other with fasteners to form floating platforms (1.2) on both sides of the steel pipe pile (2), installing connecting platforms (1.3) on the other two sides of the steel pipe pile (2), so that the floating platforms (1.2) are connected to each other to form a floating body (1) with a through hole (1.1); S3 Install the lifting equipment: Select H-shaped steel (8), fix it vertically on the floating platform (1.2), connect the horizontal H-shaped steel (8) to the upper ends of the two vertical H-shaped steels (8), and install the electric hoist (9) in the middle of the horizontal H-shaped steel (8); S4 Install the synchronous frame (7.1): Use the electric hoist (9) to lift the synchronous frame (7.1) to the top of the steel pipe pile (2), adjust the axis of the synchronous ring (7.1.1) to coincide with the axis of the steel pipe pile (2), and fix the counterweight base (7.1.3) on the counterweight frame to the floating body (1); S5 Sleeve body (3) fluid connection: Install the high-pressure water gun pump (5) on the floating body (1), connect one end of the connecting pipe (6) to the output port of the high-pressure water gun pump (5), and pass the other end through the connecting hole (3.4.1) of the sleeve body (3) to connect to the input port of the nozzle (4); S6 Place the sleeve body (3): Use the electric hoist (9) to lift the sleeve body (3) and pass it through the synchronization ring ( 7.1.1), lower the sleeve body (3) so that the upper end of the steel pipe pile (2) is inserted into the sleeve body (3) until the retaining hole (3.3.1) of the retaining ring (3.3) is sleeved on the outer wall of the steel pipe pile (2), and then continue to lower the sleeve body (3) so that the bottom stop blade (3.14) of the sleeve body (3) is wedged into the riverbed mud layer, and then release the connection between the electric hoist (9) and the sleeve body (3); S7 drive connection: clamp the wall of the synchronous pipe at the synchronous clamp (7.4), and adjust the clamping force so that the synchronous clamp (7.4) can drive the nozzle (4); S8 Removing silt: Start the high-pressure water gun pump (5) to spray high-pressure water through the output port of the nozzle (4) and the side nozzle (4.1), and then push the driving handle (7.5) in the spraying direction opposite to the nozzle to make the connecting pipe (6) rotate around the outer periphery of the steel pipe pile (2) along with the synchronous caliper (7.4). The connecting pipe (6) drives the nozzle (4) to rotate around the circumference of the steel pipe pile (2). The water sprayed by the nozzle (4) and the side nozzle (4.1) forms a rotating vortex at the connection between the steel pipe pile (2) and the riverbed, and the soil is scoured by the rotating vortex to form a sac-shaped cavity, so as to provide space for the sleeve body (3) to sink with its own weight, and can continue to move axially downward to form a spiral downward vortex, and continuously peel off the silt adhering to the outer wall of the steel pipe pile (2) until it sinks to a preset peeling depth; S9 Removing the self-sinking debonding sleeve device: Separate the connecting pipe (6) from the output port of the high-pressure water gun pump (5), disengage the synchronous clamp (7.4) from the connecting pipe (6), remove the synchronous frame (7.1), and use the electric hoist (9) to lift the synchronous frame (7.1) and the sleeve body (3) off the floating platform (1.2), and disconnect the connecting platform (1.3) from the floating platform (1.2); S10 Pile extraction: Within 24 hours after completing the above steps, use the crane on the work vessel to connect to the steel pipe pile (2) and extract it.

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