Pile shoe and pile leg

Abstract

The invention provides a pile shoe and a pile leg, and belongs to the technical field of ocean engineering. The pile shoe comprises a pile shoe body and a suction flushing unit. A cavity is formed in the pile shoe body; the suction washing unit is connected with the top of the pile shoe body, the suction washing unit is connected with a pile washing system and a suction system of a pile leg connected with the pile shoe, and the suction washing unit is used for washing the exterior of the pile shoe and filling a medium into the cavity when the pile shoe is used for pulling out a pile. And when the pile shoe is inserted into a pile, the medium in the cavity is sucked so that negative pressure can be formed in the pile shoe body. The working performance of the pile shoe can be improved.

Description

Technical Field

[0001] The present invention belongs to the field of marine engineering technology, and in particular relates to a pile shoe and a pile leg. Background Art

[0002] Self-elevating offshore platforms are widely used in the fields of life assistance and offshore testing. The pile shoe is the lower end structure of the pile leg in the self-elevating offshore platform. The pile shoe is embedded in the soil of the seabed to provide a stable support for the entire platform. The pile shoe can effectively disperse the platform's own weight and operating load to the seabed, ensuring that the platform can maintain a stable posture under various working conditions.

[0003] In the related art, the pile shoe is usually a square or round column structure, and the cross-sectional size of the pile shoe is larger than the cross-sectional size of the pile leg, so that the pile shoe can bear a larger load. A pile shoe with good working performance needs to meet the following two conditions: one is that it can be quickly inserted and pulled out of the seabed, and the other is that it can be firmly inserted in the seabed. For this reason, when designing the pile shoe, it is necessary to minimize the resistance encountered by the pile shoe when it is inserted and pulled out of the seabed.

[0004] However, since most of the existing pile shoes are columnar structures, when the first condition is met, the volume of the pile shoe is small and the contact area between the pile shoe and the seabed is also small, thereby reducing the stability of the pile shoe; and when the second condition is met, the volume of the pile shoe is large and the resistance encountered by the pile shoe when inserted into and pulled out of the seabed is also large, resulting in the pile shoe being unable to meet the above two conditions at the same time, resulting in poor working performance of the pile shoe. Summary of the invention

[0005] The embodiment of the present disclosure provides a pile shoe and a pile leg, which can improve the working performance of the pile shoe. The technical solution is as follows:

[0006] The disclosed embodiment provides a pile shoe, which comprises a pile shoe body and a suction and flushing unit; the bottom of the pile shoe body has an opening, and the interior of the pile shoe body has a cavity, and the opening is connected to the cavity; the suction and flushing unit is connected to the top of the pile shoe body, and the suction and flushing unit is used to flush the outside of the pile shoe and fill the cavity with a medium when the pile shoe is pulling out a pile, and to suck the medium in the cavity to form a negative pressure inside the pile shoe body when the pile shoe is inserting a pile.

[0007] In another embodiment of the present disclosure, the suction and flushing unit includes a main pipeline, a plurality of spray and suction branch pipes and a plurality of pile-driving branch pipes, one end of the main pipeline is respectively connected to the pile-driving system on the pile leg and the suction system on the pile leg; the plurality of spray and suction branch pipes are located in the cavity and are arranged at intervals along the circumference of the pile shoe, the plurality of spray and suction branch pipes are all connected to the top of the pile shoe body, each of the plurality of spray and suction branch pipes is respectively connected to the other end of the main pipeline, and the spray and suction branch pipes are connected to the cavity; the plurality of pile-driving branch pipes are located outside the cavity and are arranged at intervals along the circumference of the pile shoe body, the plurality of pile-driving branch pipes are all connected to the side wall of the pile shoe body, and each of the plurality of pile-driving branch pipes is connected to the main pipeline.

[0008] In another implementation of the present disclosure, the suction and flushing unit also includes a first sleeve arranged one-to-one corresponding to the multiple spray and suction branch pipes, each of the multiple first sleeves is sleeved on the outside of the corresponding spray and suction branch pipe and is connected to the corresponding spray and suction branch pipe, and the first sleeve is embedded in the pile shoe body.

[0009] In another implementation of the present disclosure, the suction and flushing unit also includes a plurality of blocking shells arranged one-to-one corresponding to the plurality of spray and suction branch pipes, the plurality of blocking shells are all located in the cavity, and are all connected to the top of the pile shoe body, each of the plurality of blocking shells forms a water storage cavity with the top of the pile shoe body, the water storage cavity is connected to the cavity, and the pipe opening of one end of the spray and suction branch pipe away from the suction pipeline is located in the water storage cavity formed by the corresponding blocking shell.

[0010] In another implementation of the present disclosure, the suction and flushing unit also includes a plurality of pipe caps arranged one-to-one corresponding to the plurality of pile driving branch pipes, the pipe caps are located outside the cavity and connected to the top of the pile shoe body, the pipe caps and the pile shoe body define a flushing chamber, the pipe caps are provided with water spray holes connected to the flushing chamber; one end of the pile driving branch pipe away from the main pipeline is located in the flushing chamber formed by the corresponding pipe caps.

[0011] In another implementation of the present disclosure, the main pipeline includes a plurality of first stop valves, a plurality of second stop valves and a plurality of third stop valves; the plurality of first stop valves correspond one-to-one to the plurality of pile driving branch pipes, one end of the first stop valve is connected to the pile driving pump in the pile driving system, and the other end of the first stop valve is connected to the corresponding pile driving branch pipe; the plurality of second stop valves correspond one-to-one to the plurality of spray and suction branch pipes, one end of the second stop valve is connected to the pile driving pump in the pile driving system, and the other end of the second stop valve is connected to the corresponding spray and suction branch pipe; the plurality of third stop valves correspond one-to-one to the plurality of spray and suction branch pipes, one end of the third stop valve is connected to the liquid suction port of the suction pump in the suction system, and the other end of the third stop valve is connected to the corresponding spray and suction branch pipe.

[0012] In another embodiment of the present disclosure, the main pipeline further includes a first stop check valve and a second stop check valve, the first stop check valve is connected at the liquid outlet of the pile driving pump, one end of the first stop check valve is connected to one end of each of the first stop valves away from the pile driving branch pipe and one end of each of the second stop valves away from the injection and suction branch pipe, and the other end of the first stop check valve is connected to the liquid outlet of the pile driving pump; the second stop check valve is connected to the outlet of the suction pump, and the second stop check valve is connected to the liquid outlet of the suction pump.

[0013] In another embodiment of the present disclosure, the main pipeline further includes a first flow control valve and a second flow control valve; the first flow control valve is connected to the suction port of the pile driving pump, and one end of the first flow control valve is connected to the suction port of the pile driving pump, and the other end of the first flow control valve is extended into the seawater through the pile driving system; the second flow control valve is connected to the suction port of the suction pump, and one end of the second flow control valve is connected to the suction port of the suction pump, and the other end of the second flow control valve is connected to one end of the plurality of third stop valves away from the corresponding injection and suction branch pipes.

[0014] In yet another implementation of the present disclosure, the pile shoe body includes a top seat and a cylinder, the top seat is sealed on the top of the cylinder and defines a cavity with the cylinder, and the bottom of the cylinder forms the opening.

[0015] In another implementation of the present disclosure, a pile leg is further provided, which includes a pile leg body, a pile shoe pile punching system and a suction system, the bottom of the pile leg body is connected to the top of the pile shoe body in the pile shoe, the pile punching system and the suction system are both connected to the pile leg and are both connected to the suction and flushing unit in the pile shoe, and the pile shoe is the pile shoe described above.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] Since the pile shoe body has a cavity inside, and the pile shoe also includes a suction and flushing unit, and the suction and flushing unit is used to flush the outside of the pile shoe and fill the medium into the cavity when the pile shoe is pulling out the pile, and is used to suck the medium in the cavity when the pile shoe is inserting the pile so that the inside of the pile shoe body forms a negative pressure. When the pile leg connected to the pile shoe is standing, the pile leg and the weight load of the hull are gradually borne on the pile shoe, and under the action of the vertical force, the pile shoe is gradually inserted into the soil. Then the suction and flushing unit can be controlled to suck out the medium (water or air, etc.) in the pile shoe body, so that the inside of the pile shoe body forms a negative pressure and provides a strong adsorption force, so that the pile shoe can stand steadily in the mud and sand, and can resist slippage and tilting, so that it is not only suitable for hard soil layers, but also for soft soil layers. On the contrary, when it is necessary to pull out the pile, the suction and flushing unit is controlled to flush the outside of the pile shoe, so that the mud and sand outside the pile shoe can be flushed away to facilitate the discharge of mud and sand. At the same time, a medium (water or air, etc.) is injected into the cavity through the suction and flushing unit, so that the pressure inside the cavity is increased, thereby improving the pile pulling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a structural schematic diagram of a pile shoe provided by an embodiment of the present disclosure;

[0020] Figure 2 yes Figure 1 The cross-sectional view corresponding to point A in the middle;

[0021] Figure 3 yes Figure 1 The cross-sectional view corresponding to point B in the figure;

[0022] Figure 4 for Figure 1 Schematic diagram of the main pipeline structure.

[0023] The symbols in the figure mean the following:

[0024] 100, pile shoe body; 10, cavity; 101, top seat; 1011, upper top surface; 1011a, center surface; 1011b, outer rim; 1012, lower top surface; 1013, steel plate; 11, opening; 102, cylinder;

[0025] 200, suction and flushing unit; 201, main pipeline; 2011, first stop valve; 2012, second stop valve; 2013, third stop valve; 2014, first stop check valve; 2015, second stop check valve; 2016, first flow control valve; 2017, second flow control valve; 2019, third stop check valve; 202, spray and suction branch pipe; 203, first casing; 2031, first reinforcing rib; 204, blocking shell; 2040, water storage chamber; 2041, bottom plate; 2042, side plate; 2043, water hole; 2044, rib plate; 205, pile driving branch pipe; 206, pipe cap; 2060, water flushing chamber; 2061, water spray hole; 207, second casing; 2071, second reinforcing rib; 300, pile driving pump; 400, suction pump. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0027] The present disclosure provides a pile shoe, such as Figure 1 As shown, the pile shoe comprises a pile shoe body 100 and a suction and flushing unit 200. The bottom of the pile shoe body 100 has an opening 11, and the interior of the pile shoe body 100 has a cavity 10), and the opening 11 is communicated with the cavity 10.

[0028] The suction and flushing unit 200 is connected to the top of the pile shoe body 100, and is used to flush the outside of the pile shoe and fill the medium into the cavity 10 when the pile shoe is pulling out a pile, and to suck the medium in the cavity 10 to form a negative pressure inside the pile shoe body 100 when the pile shoe is inserting a pile.

[0029] When the pile shoe provided by the embodiment of the present disclosure is used on a self-elevating offshore platform, since the pile shoe includes a pile shoe body 100, the pile shoe body 100 can be connected to the pile leg so as to support the pile leg through the pile shoe.

[0030] Since the pile shoe body 100 has a cavity 10 inside, and the pile shoe also includes a suction and flushing unit 200, the suction and flushing unit 200 is used to flush the outside of the pile shoe and fill the cavity 10 with medium when the pile shoe is pulling out the pile, and is used to suck the medium in the cavity 10 when the pile shoe is inserting the pile to form a negative pressure inside the pile shoe body 100. Therefore, when the pile leg connected to the pile shoe is standing, the weight load of the pile leg and the hull will gradually be borne on the pile shoe, and under the action of the vertical force, the pile shoe is gradually inserted into the soil. Then the suction and flushing unit 200 can be controlled to suck out the medium (water or air, etc.) in the pile shoe body 100, so that the inside of the pile shoe body 100 forms a negative pressure and provides a strong adsorption force, thereby making the pile shoe stand steadily in the mud and sand, so as to be able to resist slippage and tilting, so that the pile shoe is not only suitable for hard soil layers, but also for soft soil layers. On the contrary, when it is necessary to pull out the pile, the suction and flushing unit 200 is controlled to flush the outside of the pile shoe, so that the mud and sand outside the pile shoe can be flushed away to facilitate the discharge of the mud and sand. At the same time, the suction and flushing unit 200 injects a medium (water or air, etc.) into the cavity 10, so that the pressure in the cavity 10 is increased, thereby improving the pile pulling efficiency.

[0031] It can be seen that the above pile shoes can not only realize fast pile insertion, but also fast pile extraction, and at the same time can improve the stability of the pile shoes inserted into the soil.

[0032] Optionally, the pile shoe body 100 comprises a top seat 101 and a cylinder 102, wherein the top seat 101 is sealed on the top of the cylinder 102 and defines a cavity 10 with the cylinder 102. An opening 11 is formed at the bottom of the cylinder 102.

[0033] In the above implementation, the pile shoe body 100 is configured as the above structure, and can be connected to the pile leg through the top seat 101, so that the pile shoe can be connected to the bottom of the pile leg. The arrangement of the cylinder 102 can form a cavity 10 inside the pile shoe, and then the pile shoe can be quickly inserted and removed by changing the pressure of the cavity 10.

[0034] Exemplarily, the cylinder 102 is a hollow cylindrical structure, the inner diameter of the cylinder 102 is 3-5 meters, and the height of the cylinder 102 is 3-5 meters. This facilitates the cylinder 102 to form a cavity 10. In other examples, the cylinder 102 may also be a hollow triangular prism or the like.

[0035] Along the axis direction of the cylinder 102, the top seat 101 includes an upper top surface 1011 and a lower top surface 1012 which are symmetrically arranged. The symmetry planes of the upper top surface 1011 and the lower top surface 1012 are perpendicular to the axis of the cylinder 102. The upper top surface 1011 is located on the side of the lower top surface 1012 away from the cylinder 102.

[0036] The upper top surface 1011 includes a central plane 1011a and an inclined outer ring edge 1011b, and the outer ring edge 1011b is located on the periphery of the central plane 1011a. Along the radial outward direction of the cylinder 102, the height of the outer ring edge 1011b gradually decreases. In this way, by arranging the inclined outer ring edge 1011b in the upper top surface 1011 and the lower top surface 1012, the outer edges of the upper top surface 1011 and the lower top surface 1012 of the top seat 101 can be inclined surfaces, so that the pressure on the entire plate surface of the top seat 101 is uneven when entering the mud, which is more conducive to the rapid insertion of the pile shoe into the seabed.

[0037] Exemplarily, in order to reduce the weight of the top seat 101, the top seat 101 is hollow inside. A plurality of steel plates 1013 are provided inside the top seat 101, and the plurality of steel plates 1013 are spaced apart inside the top seat 101. Each steel plate 1013 is welded to the upper top surface 1011 and the lower top surface 1012 of the top seat 101, respectively. The presence of the steel plates 1013 can further increase the structural strength of the top seat 101.

[0038] Optionally, the suction and flushing unit 200 includes a main pipeline 201, a plurality of spray and suction branch pipes 202, and a plurality of pile-punching branch pipes 205. One end of the main pipeline 201 is respectively connected to the pile-punching system on the pile leg and the suction system on the pile leg. The plurality of spray and suction branch pipes 202 are located in the cavity 10 and are arranged at intervals along the circumference of the pile shoe. The plurality of spray and suction branch pipes 202 are all connected to the top of the pile shoe body 100. Each of the plurality of spray and suction branch pipes 202 is respectively connected to the other end of the main pipeline 201, and the interior of the spray and suction branch pipe 202 is connected to the cavity 10. The plurality of pile-punching branch pipes 205 are located outside the cavity 10 and are arranged at intervals along the periphery of the pile shoe. The plurality of pile-punching branch pipes 205 are all connected to the outer wall of the pile shoe body 100, and each of the plurality of pile-punching branch pipes 205 is connected to the main pipeline 201.

[0039] In the above implementation, the main pipeline 201 is used to connect with the pile driving system and the suction system on the pile leg. The injection and suction branch pipe 202 is used to inject the medium into the cavity 10 or to suck out the medium in the cavity 10. The plurality of pile driving branch pipes 205 are used to spray seawater or air to the outside of the pile shoe to flush the silt. When pulling the pile, the silt outside the pile shoe can be flushed clean through the pile driving branch pipes 205, which is convenient for quick pile pulling.

[0040] In other examples, the suction and flushing unit 200 may also be other structures, for example, a pipeline directly extends into the cavity 10 .

[0041] The pile driving system is connected in the pile leg and comprises a pile driving pump and a pipeline. The pile driving pump is used to input a medium into the cavity 10 through the pipeline or to spray a medium to the outside of the pile shoe to clean the outer wall of the pile shoe.

[0042] The suction system is connected to the pile leg and comprises a suction pump and a pipeline. The suction pump is used to suck the medium into the cavity 10 through the pipeline and transmit the sucked medium to the outside of the pile leg.

[0043] Figure 2 yes Figure 1 The cross-sectional view corresponding to point A in the figure is combined with Figure 2 Optionally, the suction and flushing unit 200 also includes a plurality of first sleeves 203 arranged one-to-one corresponding to the plurality of spray and suction branch pipes 202, the first sleeves 203 are sleeved on the outside of the corresponding spray and suction branch pipes 202, and are connected to the corresponding spray and suction branch pipes 202, and the first sleeves 203 are embedded in the pile shoe body 100.

[0044] In the above implementation, the first sleeve 203 is used to be connected to the ejection and suction branch pipe 202 so as to enhance the structural strength of the ejection and suction branch pipe 202 .

[0045] Optionally, the outer wall of the first casing 203 is provided with at least one first reinforcing rib 2031, and the at least one first reinforcing rib 2031 is connected to the outer wall of the first casing 203. The first reinforcing rib 2031 has an inclined surface on the side away from the first casing 203, and the distance between the inclined surface and the axis of the first casing 203 gradually increases along the direction from the top to the bottom of the pile shoe body 100.

[0046] In the above implementation, the first reinforcing rib 2031 is used to further increase the structural strength of the ejector branch pipe 202, and can also increase the connection area between the first sleeve 203 and the pile shoe body 100, thereby increasing the connection strength between the first sleeve 203 and the ejector branch pipe 202 and the pile shoe body 100.

[0047] Moreover, by providing an inclined surface in the first reinforcing rib 2031, the contact area between the first reinforcing rib 2031 and the top seat 101 can be increased as much as possible while saving space, so as to further increase the connection strength between the first casing 203 and the ejector branch pipe 202 and the pile shoe body 100. That is, the first reinforcing rib 2031 is a triangular plate or a trapezoidal plate.

[0048] In the disclosed embodiment, for the convenience of connection, the first sleeve 203 and the first reinforcing rib 2031 are welded together.

[0049] Optionally, the suction and flushing unit 200 also includes a plurality of blocking shells 204 arranged one-to-one corresponding to the plurality of spray and suction branch pipes 202, the plurality of blocking shells 204 are all located in the cavity 10, and are all connected to the top of the pile shoe body 100, each of the plurality of blocking shells 204 forms a water storage chamber 2040 with the top of the pile shoe body 100, the water storage chamber 2040 is connected to the cavity 10, and the pipe opening at one end of the spray and suction branch pipe 202 away from the main pipeline 201 is located in the water storage chamber 204 formed by the corresponding blocking shell 204.

[0050] In the above implementation, the blocking shell 204 is used to form a water storage chamber 2040 with the top of the pile shoe body 100, so that the ejector and suction branch pipe 202 can be protected by the water storage chamber 2040, so that the pipe mouth of the ejector and suction branch pipe 202 will not directly face the seawater or mud, thereby avoiding mud and sand from clogging the ejector and suction branch pipe 202 and damaging the ejector and suction branch pipe 202.

[0051] In other examples, the blocking shell 204 may also be a filter screen structure with greater strength, that is, as long as it can protect the ejector and suction branch pipes 202 and allow seawater to flow freely inside and outside the water storage chamber 2040 .

[0052] Optionally, the blocking shell 204 includes a bottom plate 2041 and a plurality of side plates 2042, the bottom plate 2041 is arranged opposite to the top of the pile shoe body 100, the plurality of side plates 2042 are sequentially connected along the periphery of the bottom plate 2041, and each of the plurality of side plates 2042 is respectively connected to the bottom plate 2041 and the top of the pile shoe body 100, and the plurality of side plates 2042, the bottom plate 2041 and the top of the pile shoe body 100 define a water storage chamber 2040. The plurality of side plates 2042 have at least one water hole 2043, and both ends of the water hole 2043 are respectively connected to the cavity 10 and the water storage chamber 2040.

[0053] In the above implementation, the bottom plate 2041 is used to enclose the water storage chamber 2040 with the side plate 2042. The side plate 2042 is used to be connected to the top seat 101. The water holes 2043 in the side plate can allow seawater to freely enter and exit the water storage chamber 2040.

[0054] In order to further increase the structural strength of the blocking shell 204 , at least one rib plate 2044 arranged corresponding to the side plate 2042 is further provided in the blocking shell 204 . The rib plate 2044 is connected to the bottom plate 2041 , and the rib plate 2044 extends along the corresponding side plate 2042 .

[0055] Figure 3 yes Figure 1 The cross-sectional view corresponding to point B in the figure is combined with Figure 3Optionally, the suction and flushing unit 200 further includes a plurality of pipe caps 206 arranged one by one corresponding to the plurality of flushing branch pipes 205, the pipe caps 206 are located outside the cavity 10 and connected to the top of the pile shoe body 100. The pipe caps 206 and the pile shoe body 100 define a flushing cavity 2060, and a water spray hole 2061 communicating with the flushing cavity 2060 is provided in the pipe caps 206.

[0056] One end of the flushing branch pipe 205 away from the main pipeline 201 is located in the flushing cavity 2060 formed by the corresponding pipe cap 206 .

[0057] In the above implementation, the pipe cap 206 is used to protect the pipe opening of the pile branch pipe 205 to prevent the pipe opening of the pile branch pipe 205 from being damaged or blocked by mud. The water spray hole 2061 is used to discharge seawater or gas in the flushing cavity 2060.

[0058] In the disclosed embodiment, the water spray hole 2061 can be positioned at any position of the pipe cap 206, and the axis of the water spray hole 2061 can be in various directions, so that flushing can be performed in different directions of the pile shoe.

[0059] For example, the axis of the water spray hole 2061 is perpendicular to the axis of the pile leg or the angle is greater than 90 degrees. In this way, not only can the medium sprayed from the water spray hole 2061 be able to wash the outside of the pile shoe, but also the washed medium can flow along the outer wall of the pile shoe and wash the outer wall of the pile shoe again.

[0060] In order to increase the spraying effect, a plurality of water spray holes 2061 may be provided in each pipe cap 206 , and the plurality of water spray holes 2061 are arranged at intervals.

[0061] Optionally, the suction and flushing unit 200 also includes a plurality of second sleeves 207 arranged one by one corresponding to the plurality of pile driving branch pipes 205, the second sleeves 207 are sleeved on the outside of the corresponding pile driving branch pipes 205 and connected to the corresponding pile driving branch pipes 205, and the second sleeves 207 are embedded in the top of the top seat 101 of the pile shoe body 100.

[0062] In the above implementation, the second sleeve 207 is used to be connected to the pile driving branch pipe 205 so as to enhance the structural strength of the pile driving branch pipe 205 .

[0063] Optionally, the outer wall of the second casing 207 is provided with at least one second reinforcing rib 2071, and the at least one second reinforcing rib 2071 is connected to the outer wall of the second casing 207. The second reinforcing rib 2071 has an inclined surface on the side away from the first casing 203, and the distance between the inclined surface and the axis of the first casing 203 gradually increases along the direction from the top to the bottom of the pile shoe body 100.

[0064] In the above implementation, the second reinforcing ribs 2071 are used to further increase the structural strength of the second sleeves 207 and the pile branch pipes 205, which are arranged in a one-to-one correspondence. At the same time, the connection area between the second sleeve 207 and the pile shoe body 100 can also be increased, thereby increasing the connection strength between the second sleeve 207 and the pile branch pipe 205 and the pile shoe body 100.

[0065] Moreover, by providing an inclined surface in the second reinforcing rib 2071, the contact area between the second reinforcing rib 2071 and the top seat 101 can be increased as much as possible while saving space, so as to further increase the connection strength between the second casing 207 and the pile branch pipe 205 and the pile shoe body 100. That is, the second reinforcing rib 2071 can be a triangular plate or a trapezoidal plate.

[0066] In the disclosed embodiment, for the convenience of connection, the second sleeve 207 and the second reinforcing rib 2071 are welded together.

[0067] Figure 4 for Figure 1 The structural diagram of the main pipeline in Figure 4 Optionally, the main pipeline 201 includes a plurality of first stop valves 2011, a plurality of second stop valves 2012, and a plurality of third stop valves 2013. The plurality of first stop valves 2011 correspond to the plurality of pile driving branch pipes 205 one by one, one end of the first stop valve 2011 is connected to the pile driving pump in the pile driving system, and the other end of the first stop valve 2011 is connected to the corresponding pile driving branch pipe 205.

[0068] The plurality of second stop valves 2012 correspond to the plurality of ejection and suction branch pipes 202 one by one, one end of the second stop valve 2012 is connected to the pile driving pump in the pile driving system, and the other end of the second stop valve 2012 is connected to the corresponding ejection and suction branch pipe 202. The plurality of third stop valves 2013 correspond to the plurality of ejection and suction branch pipes 202 one by one, one end of the third stop valve 2013 is connected to the liquid suction port of the suction pump in the suction system, and the other end of the third stop valve 2013 is connected to the corresponding ejection and suction branch pipe 202.

[0069] In the above implementation, the first stop valve 2011 can control the on-off between the corresponding pile driving branch pipe 205 and the pile driving pump. That is, when pulling out the pile, the first stop valve 2011 is opened, and the seawater discharged by the pile driving pump can be sprayed to the outside of the pile shoe through the pile driving branch pipe 205. On the contrary, when inserting the pile, the first stop valve 2011 is closed, and the pile driving branch pipe 205 no longer sprays the medium to the outside of the pile shoe.

[0070] The second stop valve 2012 is used to control the connection and disconnection between the corresponding spray-suction branch pipe 202 and the pile driving pump 300. That is, when pulling a pile, the second stop valve 2012 is opened, and the seawater discharged by the pile driving pump can be sprayed into the cavity 10 in the pile shoe through the spray-suction branch pipe 202, so that the cavity 10 no longer presents a negative pressure and is conducive to pulling a pile. On the contrary, when inserting a pile, the second stop valve 2012 is closed, and the spray-suction branch pipe 202 no longer sprays the injection medium into the cavity 10 in the pile shoe.

[0071] The second stop valve 2012 is used to control the connection and disconnection between the corresponding spray-suction branch pipe 202 and the pile driving pump 300. That is, when pulling a pile, the second stop valve 2012 is opened, and the seawater discharged by the pile driving pump can be sprayed into the cavity 10 in the pile shoe through the spray-suction branch pipe 202, so that the cavity 10 no longer presents a negative pressure and is conducive to pulling a pile. On the contrary, when inserting a pile, the second stop valve 2012 is closed, and the spray-suction branch pipe 202 no longer sprays the injection medium into the cavity 10 in the pile shoe.

[0072] The third stop valve 2013 is used to control the connection and disconnection between the corresponding spray-suction branch pipe 202 and the suction pump 400. That is, when inserting a pile, the third stop valve 2013 is opened, and the suction pump sucks the medium in the cavity 10 in the pile shoe through the spray-suction branch pipe 202, so that the cavity 10 presents a negative pressure, which is conducive to inserting a pile. On the contrary, when pulling a pile, the third stop valve 2013 is closed, and the spray-suction branch pipe 202 no longer sucks the medium into the cavity 10 in the pile shoe.

[0073] That is to say, when pulling out piles, the first stop valve 2011 and the second stop valve 2012 are controlled to be opened, and the third stop valve 2013 is controlled to be closed, so that both the spray-suction branch pipe 202 and the pile-driving branch pipe 205 can spray the medium, so that there is no negative pressure in the cavity 10, and the outside of the pile shoe can be flushed, which is more conducive to quick pile pulling.

[0074] When inserting piles, the first stop valve 2011 and the second stop valve 2012 are closed, and the third stop valve 2013 is opened, so that the spray-suction branch pipe 202 can draw the medium from the cavity 10, so that the cavity 10 is under negative pressure, which is conducive to rapid pile insertion.

[0075] In other examples, the first stop valve 2011, the second stop valve 2012 and the third stop valve 2013 may all be other switch valves, such as a two-position two-way reversing valve.

[0076] Optionally, the main pipeline 201 further includes a first stop check valve 2014 and a second stop check valve 2015, wherein the first stop check valve 2014 is connected to the liquid outlet of the pile driving pump, one end of the first stop check valve 2014 is connected to one end of each first stop valve 2011 away from the pile driving branch pipe 205 and one end of each second stop valve 2012 away from the injection and suction branch pipe 202, and the other end of the first stop check valve 2014 is connected to the liquid outlet of the pile driving pump. The second stop check valve 2015 is connected to the outlet of the suction pump, and the second stop check valve 2015 is connected to the liquid outlet of the suction pump.

[0077] In the above implementation, by arranging the first stop check valve 2014 and the second stop check valve 2015 near the pile driving pump and the suction pump, the first stop check valve 2014 can prevent the medium discharged by the pile driving pump 300 from flowing back. At the same time, the second stop check valve 2015 can prevent the medium sucked by the suction pump 400 from flowing back.

[0078] In other examples, the first stop check valve 2014 and the second stop check valve 2015 may also be other valve components, such as one-way valves.

[0079] Optionally, the main pipeline 201 further includes a first flow control valve 2016 and a second flow control valve 2017. The first flow control valve 2016 is connected to the suction port of the pile driving pump, and one end of the first flow control valve 2016 is connected to the suction port of the pile driving pump, and the other end of the first flow control valve 2016 extends into the seawater through the pile driving system.

[0080] The second flow control valve 2017 is connected to the suction port of the suction pump, and one end of the second flow control valve 2017 is connected to the suction port of the suction pump, and the other end of the second flow control valve 2017 is connected to one end of a plurality of third stop valves 2013 away from the corresponding injection and suction branch pipes 202.

[0081] In the above implementation, the first flow control valve 2016 is used to control the flow rate of the medium discharged by the pile driving pump 300 , and further control the flow rate of the medium ejected from the ejection and suction branch pipe 202 and the pile driving branch pipe 205 .

[0082] The second flow control valve 2017 is used to control the flow rate of the medium sucked by the suction pump, thereby controlling the suction speed of the spray-suction branch pipe 202 .

[0083] In the embodiment of the present disclosure, in order to reduce costs and facilitate adjustment, the first flow control valve 2016 and the second flow control valve 2017 are both wafer-type butterfly valves. In other examples, the first flow control valve 2016 and the second flow control valve 2017 can also be proportional valves, etc.

[0084] Combination Figure 4In order to improve the efficiency of the suction pump 400 and the pile driving pump 300, the number of the suction pump 400 and the number of the pile driving pump 300 can be two. When the number of the pile driving pump 300 is two, the liquid outlets of the two pile driving pumps 300 are connected to each other and connected to the second stop valve 2012. The first stop valve 2011 can be arranged and connected to the pile driving pump 300 in a one-to-one correspondence, or a plurality of first stop valves 2011 can be connected to one pile driving pump 300, or a plurality of first stop valves 2011 can be connected between the passage after the liquid outlets of the two pile driving pumps 300 are connected to each other and the second stop valve 2012. There are also two first stop check valves 2014 corresponding to the pile driving pumps 300 in a one-to-one correspondence, and each first stop check valve 2014 is connected between the outlet of the corresponding pile driving pump 300 and the first stop valve 2011 of the pile driving pump 300 that is adjacent to the nearest pile driving pump 300. There are two first flow control valves 2016 corresponding to the pile driving pumps 300 , and each first flow control valve 2016 is connected to the liquid suction port of the corresponding pile driving pump 300 .

[0085] When there are two suction pumps 400, each suction pump 400 is connected to two third stop valves 2013. There are also two second stop check valves 2015 corresponding to the suction pumps 400, and each second stop check valve 2015 is connected to the liquid outlet of the corresponding suction pump 400. There are also two second flow control valves 2017 corresponding to the suction pumps 400, and each second flow control valve 2017 is connected between the liquid suction port of the corresponding suction pump 400 and all the third stop valves 2013.

[0086] Optionally, the main pipeline 201 further includes a third stop check valve 2019, one end of the third stop check valve 2019 is connected to the compression system in the pile leg, and the other end of the third stop check valve 2019 is respectively connected to one end of the plurality of first stop valves 2011 and the plurality of second stop valves 2012 toward the pile driving pump 300.

[0087] In the above implementation, the third stop check valve 2019 is used to connect the compression system in the pile leg with the first stop valve 2011 and multiple second stop valves 2012, so as to spray compressed air and the like to the outside of the pile shoe and into the cavity 10 of the pile shoe through the first stop valve 2011 and multiple second stop valves 2012.

[0088] Moreover, by setting the third stop check valve 2019, the compressed air in the compression system can only enter the first stop valve 2011 and the multiple second stop valves 2012 in one direction, and the compressed air will not flow in the reverse direction.

[0089] In order to improve efficiency, there may be multiple third stop check valves 2019, and at least one third stop check valve 2019 is connected to one of the pipelines of the compression system in the pile leg.

[0090] In the disclosed embodiment, in order to monitor the pressure conditions in each ejection and suction branch pipe 202 and each pile driving branch pipe 205 in real time, a pressure detection gauge may be installed in each ejection and suction branch pipe 202 and each pile driving branch pipe 205.

[0091] On the other hand, the embodiment of the present disclosure further provides a pile leg, which includes a pile leg body, a pile shoe pile punching system and a suction system, the bottom of the pile leg body is connected to the top of the pile shoe body 100 in the pile shoe, the pile punching system and the suction system are both connected to the pile leg, and are both connected to the suction and flushing unit 200 in the pile shoe. The pile shoe is the pile shoe mentioned above.

[0092] The above pile legs have the same beneficial effects as the aforementioned pile shoes, which will not be repeated here.

[0093] The following briefly introduces the working process of the pile shoe provided by the embodiment of the present disclosure:

[0094] ① Pile insertion of pile shoes: When the pile shoes follow the pile legs to the designated operating area, the pile legs are gradually lowered to the mud surface of the seabed through the lifting system. At this time, the weight load of the pile legs and the hull is gradually borne on the pile shoes. Under the action of vertical force, the pile shoes are gradually inserted into the soil.

[0095] The pile pump 300 is controlled to be in a closed state, and the first stop valve 2011 and the second stop valve 2012 are both kept closed. The third stop valve 2013 is opened, and the suction pump 400 starts to work, and the medium in the cavity 10 in the pile shoe can be extracted through the pipeline, so that a pressure difference is generated inside and outside the pile shoe, which is conducive to the insertion of the pile shoe into the mud and sand. At the same time, the flow rate can be adjusted by controlling the state of the second flow control valve 2017 and the power of the suction pump 400, and the second stop check valve 2015 is used to prevent the medium from flowing back.

[0096] ② Pile pulling: Control the third stop valve 2013 to close, and the suction pump 400 stops working. Open the first stop valve 2011 and the second stop valve 2012, and the pile pump 300 is turned on. The pile pump 300 mixes the seawater in the seawater main pipe and the high-pressure gas in the compression system into a high-speed and high-pressure gas-water mixture and pumps it into the first stop valve 2011 to flush the outside of the pile shoe, and at the same time flushes the inside of the cavity 10 through the second stop valve 2012 to facilitate pile pulling. In addition, the flow rate can be adjusted by controlling the state of the first flow control valve 2016 on the pipeline and the power of the pile pump 300, and the first stop check valve 2014 is used to prevent the medium from flowing back. When the pile shoe is retracted and no longer bears the platform load, the pile pump 300 can be turned off.

[0097] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A pile shoe, characterized in that: The pile shoe comprises a pile shoe body (100) and a suction and flushing unit (200); The bottom of the pile shoe body (100) has an opening (11), and the interior of the pile shoe body (100) has a cavity (10), and the opening (11) is in communication with the cavity (10); The suction and flushing unit (200) is connected to the top of the pile shoe body (100), and the suction and flushing unit (200) is used to flush the outside of the pile shoe and fill the medium into the cavity (10) when the pile shoe is pulling out a pile, and to suck the medium in the cavity (10) to form a negative pressure inside the pile shoe body (100) when the pile shoe is inserting a pile.

2. The pile shoe according to claim 1, characterized in that: The suction and flushing unit (200) comprises a main pipeline (201), a plurality of spray and suction branch pipes (202) and a plurality of pile-punching branch pipes (205); one end of the main pipeline (201) is respectively connected to the pile-punching system on the pile leg and the suction system on the pile leg; The plurality of ejection and suction branch pipes (202) are located in the cavity (10) and are arranged at intervals along the circumference of the pile shoe. The plurality of ejection and suction branch pipes (202) are all connected to the top of the pile shoe body (100). Each ejection and suction branch pipe (202) in the plurality of ejection and suction branch pipes (202) is respectively connected to the other end of the main pipeline (201), and the ejection and suction branch pipes (202) are in communication with the cavity (10); The plurality of pile driving branch pipes (205) are located outside the cavity (10) and are arranged at intervals along the circumference of the pile shoe body (100); the plurality of pile driving branch pipes (205) are all connected to the side wall of the pile shoe body (100); and each of the plurality of pile driving branch pipes (205) is connected to the main pipeline (201).

3. The pile shoe according to claim 2, characterized in that: The suction and flushing unit (200) also includes a first sleeve (203) arranged one-to-one corresponding to the multiple spray and suction branch pipes (202), each first sleeve (203) in the multiple first sleeves (203) is sleeved on the outside of the corresponding spray and suction branch pipe (202) and is connected to the corresponding spray and suction branch pipe (202), and the first sleeve (203) is embedded in the pile shoe body (100).

4. The pile shoe according to claim 2, characterized in that: The suction and flushing unit (200) further comprises a plurality of blocking shells (204) arranged one-to-one corresponding to the plurality of spray and suction branch pipes (202); the plurality of blocking shells (204) are all located in the cavity (10) and are all connected to the top of the pile shoe body (100); each of the plurality of blocking shells (204) forms a water storage chamber (2040) with the top of the pile shoe body (100); the water storage chamber (2040) is connected to the cavity (10); and the pipe opening of one end of the spray and suction branch pipe (202) away from the main pipeline (201) is located in the water storage chamber (2040) formed by the corresponding blocking shell (204).

5. The pile shoe according to claim 2, characterized in that: The suction and flushing unit (200) further comprises a plurality of pipe caps (206) arranged one by one corresponding to the plurality of pile flushing branch pipes (205); the pipe caps (206) are located outside the cavity (10) and connected to the top of the pile shoe body (100); the pipe caps (206) and the pile shoe body (100) define a flushing cavity (2060); and a water spray hole (2061) communicating with the flushing cavity (2060) is provided in the pipe cap (206); One end of the pile-punching branch pipe (205) away from the main pipeline (201) is located in the flushing cavity (2060) formed by the corresponding pipe cap (206).

6. The pile shoe according to claim 2, characterized in that: The main pipeline (201) comprises a plurality of first stop valves (2011), a plurality of second stop valves (2012) and a plurality of third stop valves (2013); The plurality of first stop valves (2011) correspond one to one with the plurality of pile driving branch pipes (205); one end of the first stop valve (2011) is connected to the pile driving pump (300) in the pile driving system, and the other end of the first stop valve (2011) is connected to the corresponding pile driving branch pipe (205); The plurality of second stop valves (2012) correspond one to one with the plurality of ejection and suction branch pipes (202); one end of the second stop valve (2012) is connected to the pile driving pump (300), and the other end of the second stop valve (2012) is connected to the corresponding ejection and suction branch pipe (202); The multiple third stop valves (2013) correspond one-to-one to the multiple spray and suction branch pipes (202), one end of the third stop valve (2013) is connected to the liquid suction port of the suction pump (400) in the suction system, and the other end of the third stop valve (2013) is connected to the corresponding spray and suction branch pipe (202).

7. The pile shoe according to claim 6, characterized in that: The main pipeline (201) further comprises a first stop check valve (2014) and a second stop check valve (2015), wherein the first stop check valve (2014) is connected to the liquid outlet of the pile driving pump (300), one end of the first stop check valve (2014) is connected to one end of each of the first stop valves (2011) away from the pile driving branch pipe (205) and one end of each of the second stop valves (2012) away from the ejection and suction branch pipe (202), and the other end of the first stop check valve (2014) is connected to the liquid outlet of the pile driving pump; The second stop check valve (2015) is connected to the outlet of the suction pump (400), and the second stop check valve (2015) is connected to the liquid outlet of the suction pump (400).

8. The pile shoe according to claim 6, characterized in that: The main pipeline (201) further comprises a first flow control valve (2016) and a second flow control valve (2017); The first flow control valve (2016) is connected to the liquid suction port of the pile driving pump (300), and one end of the first flow control valve (2016) is connected to the liquid suction port of the pile driving pump (300), and the other end of the first flow control valve (2016) is connected to seawater; The second flow control valve (2017) is connected to the liquid suction port of the suction pump (400), and one end of the second flow control valve (2017) is connected to the liquid suction port of the suction pump (400), and the other end of the second flow control valve (2017) is connected to one end of the plurality of third stop valves (2013) away from the corresponding spray and suction branch pipes (202).

9. The pile shoe according to any one of claims 1 to 8, characterized in that: The pile shoe body (100) comprises a top seat (101) and a cylinder (102); the top seat (101) covers the top of the cylinder (102) and defines a cavity (10) with the cylinder (102); and the bottom of the cylinder (102) forms the opening (11).

10. A pile leg, characterized in that: The pile leg comprises a pile leg body, a pile shoe pile punching system and a suction system. The bottom of the pile leg body is connected to the top of the pile shoe body (100) in the pile shoe. The pile punching system and the suction system are both connected to the pile leg and are both connected to the suction and flushing unit (200) in the pile shoe. The pile shoe is the pile shoe described in any one of claims 1 to 9.

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