CN114016503A - Pile shoe and pile leg - Google Patents
Pile shoe and pile leg Download PDFInfo
- Publication number
- CN114016503A CN114016503A CN202111196280.4A CN202111196280A CN114016503A CN 114016503 A CN114016503 A CN 114016503A CN 202111196280 A CN202111196280 A CN 202111196280A CN 114016503 A CN114016503 A CN 114016503A
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- electric control
- plate
- electrically controlled
- telescopic
- shoe
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/72—Pile shoes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
- E02B17/022—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform adapted to travel on the bottom
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present disclosure provides a shoe and a leg, the shoe comprising: a housing; the electronic control telescopic mechanism is connected with the shell and is configured to be switched to a first position or a second position in an operable and controllable manner, when the electronic control telescopic mechanism is located at the first position, the electronic control telescopic mechanism is located in the shell, and when the electronic control telescopic mechanism is located at the second position, at least part of the electronic control telescopic mechanism is located outside the shell; the detection piece is positioned in the shell and used for detecting a monitoring signal, and the monitoring signal is used for indicating the strain of the shell; the controller is electrically connected with the electric control telescopic mechanism and the detection piece respectively, and the controller is configured to control the electric control telescopic mechanism to be switched to the first position or the second position based on the monitoring signal. The pile shoe pressure control device can timely adjust the pressure applied by the pile shoe to a seabed soil layer when the pile shoe falls into the seabed, and avoids the problem that an ocean platform topples.
Description
Technical Field
The disclosure relates to the technical field of ocean engineering, in particular to a pile shoe and a pile leg.
Background
The ocean platform is a structure for providing production and living facilities for offshore activities such as drilling, oil production, collection and transportation and the like. An offshore platform typically comprises a platform section and a support section, the support section comprising legs and shoes which are secured to the bottom ends of the legs and which are inserted into the silt in the sea floor to carry the pressure throughout the offshore platform.
In the related art, the shoe is generally a square or circular column structure, and the size of the cross section of the shoe is set to be larger than that of the leg so that the shoe can bear a large load.
However, due to various reasons such as inaccurate exploration of submarine geological environment, insufficient pre-loading and the like, when a pile is standing on the ocean platform, the phenomenon that a pile shoe sinks into seabed soft soil (the pile shoe punctures) can occur, and the problem that the ocean platform topples is easily caused.
Disclosure of Invention
The embodiment of the disclosure provides a pile shoe and a pile leg, which can adjust the pressure applied by the pile shoe to a seabed soil layer in time when the pile shoe falls into the seabed, so as to avoid the problem that an ocean platform topples. The technical scheme is as follows:
the disclosed embodiments provide a pile shoe, which includes: a housing; the electronic control telescopic mechanism is connected with the shell and is configured to be switched to a first position or a second position in an operable and controllable manner, when the electronic control telescopic mechanism is located at the first position, the electronic control telescopic mechanism is located in the shell, and when the electronic control telescopic mechanism is located at the second position, at least part of the electronic control telescopic mechanism is located outside the shell; the detection piece is positioned in the shell and used for detecting a monitoring signal, and the monitoring signal is used for indicating the strain of the shell; the controller is electrically connected with the electric control telescopic mechanism and the detection piece respectively, and the controller is configured to control the electric control telescopic mechanism to be switched to the first position or the second position based on the monitoring signal.
In an implementation manner of the embodiment of the present disclosure, the controlling, based on the monitoring signal, the electric control telescoping mechanism to switch to the first position or the second position includes: and if the strain indicated by the monitoring signal is smaller than a set value, controlling the electric control telescopic mechanism to be switched to the second position.
In another implementation manner of the embodiment of the disclosure, the electric control telescopic mechanism comprises an electric control oil cylinder and a telescopic plate, wherein a piston rod of the electric control oil cylinder is connected with the telescopic plate, the telescopic plate is parallel to the axial direction of the piston rod of the electric control oil cylinder, a cylinder body of the electric control oil cylinder is positioned in the shell, and the electric control oil cylinder is electrically connected with the controller; when the electronic control telescopic mechanism is located at the first position, the telescopic plate is located in the shell, and when the electronic control telescopic mechanism is located at the second position, the telescopic plate is located outside the shell.
In another implementation of the disclosed embodiment, the housing includes: the side plate is connected with the two supporting plates respectively, and two opposite side edges of the side plate are connected with the two supporting plates respectively; the electric control oil cylinder is connected with the supporting plate, and the telescopic plate is parallel to the supporting plate.
In another implementation manner of the embodiment of the present disclosure, the electronic control telescoping mechanism further includes: the supporting device comprises a pulley and a supporting rod, wherein one end of the supporting rod is connected with the supporting plate, the other end of the supporting rod is connected with the pulley, the pulley is rotatably arranged on the supporting rod, and the pulley is abutted to the expansion plate.
In another implementation manner of the embodiment of the present disclosure, the housing further includes a reinforcing rib, the reinforcing rib is located between the two support plates, and at least two of the side plate and the two support plates are connected to the reinforcing rib.
In another implementation manner of the embodiment of the present disclosure, the electronic control telescoping mechanism further includes: the utility model discloses a cutting tool, including the expansion plate, the cutting tool, the driving piece, the cutting tool is located the expansion plate, just the cutting tool with the piston rod of automatically controlled hydro-cylinder is located respectively two opposite sides on the expansion plate, the driving piece is located on the expansion plate, the driving piece is used for the drive the cutting tool along keep away from on the expansion plate the side reciprocating motion of automatically controlled hydro-cylinder.
In another implementation manner of the embodiment of the present disclosure, the driving member includes an electrically controlled telescopic rod, one end of the electrically controlled telescopic rod is connected to the retractable plate, the other end of the electrically controlled telescopic rod is connected to the cutting knife, the electrically controlled telescopic rod is electrically connected to the controller, and the controller is configured to control the electrically controlled telescopic rod to perform reciprocating expansion and contraction when the electrically controlled telescopic mechanism is switched to the second position based on the monitoring signal.
In another implementation of an embodiment of the disclosure, the detecting element includes a load cell.
Embodiments of the present disclosure provide a leg comprising a shoe as described above.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
the pile shoe provided by the embodiment of the disclosure comprises a shell, an electric control telescopic mechanism, a detection piece and a controller, wherein the electric control telescopic mechanism is arranged in the shell, the electric control telescopic mechanism can be located at a first position and a second position, the detection piece is also arranged in the shell and is used for detecting a monitoring signal, the monitoring signal can be used for indicating strain information on the shell, and the controller is electrically connected with the electric control telescopic mechanism and the detection piece. Therefore, after the pile shoe is sunk into soft soil on the seabed, the stress on the surface of the shell is changed, so that the strain on the surface of the shell is changed, the controller detects the monitoring signal to judge whether the pile shoe is sunk into the soft soil on the seabed or not, and the controller determines that the pile shoe is sunk into the seabed based on the monitoring signal to control the electric control telescopic mechanism to be switched from the first position to the second position so as to extend at least part of the electric control telescopic mechanism out of the shell. The electric control telescopic mechanism is pushed out from the side edge of the pile shoe and inserted into the seabed, and the part of the electric control telescopic mechanism extending out of the shell can increase the contact area between the pile shoe and the seabed, so that the pressure of the pile leg on the seabed is reduced, the pile shoe puncture can be effectively prevented, and the problem that the ocean platform topples over is effectively avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic structural view of a pile shoe provided by an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an electrically controlled telescopic mechanism provided in the embodiment of the present disclosure.
The various symbols in the figure are illustrated as follows:
10. a housing; 101. a side plate; 102. a support plate;
20. an electric control telescopic mechanism; 201. an electric control oil cylinder; 202. a retractable plate; 203. a pulley; 204. a support bar; 205. a cutting knife is scribed; 206. a drive member;
30. a detection member;
40. and a controller.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top", "bottom", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.
In the related art, an ocean platform generally includes a platform portion and a support portion, the support portion includes a leg and a shoe, the shoe is fixed at the bottom end of the leg and inserted into the sediment on the ocean floor to bear the pressure of the whole ocean platform. The shoe is typically a square or round cylindrical structure and the cross-section of the shoe is sized larger than the cross-section of the leg to enable the shoe to carry larger loads.
However, due to various reasons such as inaccurate exploration of submarine geological environment, insufficient pre-loading and the like, when a pile is standing on the ocean platform, the phenomenon that a pile shoe sinks into seabed soft soil can occur, and the problem that the ocean platform topples is easily caused.
Fig. 1 is a schematic structural diagram of a pile shoe provided by an embodiment of the disclosure. As shown in fig. 1, the shoe includes: the electronic control telescopic mechanism comprises a shell 10, an electronic control telescopic mechanism 20, a detection piece 30 and a controller 40.
As shown in fig. 1, the electrically controlled telescoping mechanism 20 is connected to the housing 10, the electrically controlled telescoping mechanism 20 is configured to be operably switched to a first position or a second position, when the electrically controlled telescoping mechanism 20 is located at the first position, the electrically controlled telescoping mechanism 20 is located inside the housing 10, and when the electrically controlled telescoping mechanism 20 is located at the second position, at least a portion of the electrically controlled telescoping mechanism 20 is located outside the housing 10.
Wherein, the detecting member 30 is located in the housing 10, and the detecting member 30 is used for detecting a monitoring signal, and the monitoring signal is used for indicating the strain of the housing 10.
Wherein, controller 40 is connected with automatically controlled telescopic machanism 20 and detection piece 30 electrical behavior respectively, and controller 40 is configured as, based on monitoring signal control automatically controlled telescopic machanism 20 and switches into first position or second position.
The pile shoe provided by the embodiment of the present disclosure includes a housing 10, an electrically controlled telescoping mechanism 20, a detecting element 30 and a controller 40, the electrically controlled telescoping mechanism 20 is disposed in the housing 10, the electrically controlled telescoping mechanism 20 can be located at a first position and a second position, the detecting element 30 is also disposed in the housing 10 and is used for detecting a monitoring signal, the monitoring signal can be used for indicating strain information on the housing 10, and the controller 40 is electrically connected to the electrically controlled telescoping mechanism 20 and the detecting element 30.
Therefore, after the pile shoe falls into the soft soil on the seabed, the stress on the surface of the shell 10 changes, so that the strain on the surface of the shell 10 changes, the controller 40 can judge whether the pile shoe falls into the soft soil on the seabed or not by detecting the monitoring signal, and the controller 40 can control the electric control telescopic mechanism 20 to switch from the first position to the second position after determining that the pile shoe falls into the seabed based on the monitoring signal, so as to extend at least part of the electric control telescopic mechanism 20 out of the shell 10. So that the electric control telescoping mechanism 20 is pushed out from the side edge of the pile shoe and inserted into the seabed, and the part of the electric control telescoping mechanism 20 extending out of the shell 10 can increase the contact area between the pile shoe and the seabed, so that the pressure of the pile leg on the seabed is reduced, the occurrence of pile shoe puncture can be effectively prevented, and the problem of overturning of the ocean platform is effectively avoided.
In the embodiment of the present disclosure, the Controller 40 may be a Programmable Logic Controller 40 (PLC), which is a Programmable memory, and stores therein instructions for performing operations such as Logic operation, sequence control, timing, counting, and arithmetic operation, and controls various device operations through digital or analog input and output.
Alternatively, the detection member 30 may include a load cell. Wherein, can set up the foil gage in the load cell and be used for detecting the strain of casing 10 surface, the load cell can confirm monitoring signal based on the strain that the foil gage detected, and monitoring signal promptly can be used for instructing the strain on casing 10. When the pile shoe falls into the soft soil on the seabed, the stress on the surface of the housing 10 changes, so that the strain on the surface of the housing 10 changes, and therefore, the controller 40 can judge whether the pile shoe falls into the soft soil on the seabed or not by detecting the monitoring signal.
In the embodiment of the present disclosure, controlling the electronic control telescoping mechanism 20 to switch to the first position or the second position based on the monitoring signal includes:
and if the strain indicated by the monitoring signal is smaller than a set value, controlling the electric control telescopic mechanism 20 to switch to the second position.
And if the strain indicated by the monitoring signal is increased from being lower than the set value to being not less than the set value, controlling the electrically controlled telescopic mechanism 20 to be switched from the second position to the first position based on a command signal, wherein the command signal is a manually input control signal.
After the pile legs sink into the soft soil on the seabed, the pressure on the surface of the shell 10 is reduced, the strain on the surface of the shell 10 is also reduced, and in order to avoid that the pile legs only stop sinking after slightly sinking into the soft soil on the seabed, which causes the malfunction of the electric control telescopic mechanism 20, a monitoring signal can be set to be smaller than a set value, so that when the set value is smaller than the set value, the electric control telescopic mechanism 20 is controlled to act when the ocean platform is about to overturn.
If the pile leg falls into the sea bottom and is stable, the strain indicated by the monitoring signal is gradually increased from a state lower than a set value to a state higher than the set value at the moment, the pile leg is stable in the sea bed, a technician is required to confirm whether the pile leg has a risk of overturning at the moment, if the pile leg does not have the risk of overturning, the technician inputs an instruction signal, and after receiving the instruction signal, the controller 40 controls the electronic control telescoping mechanism 20 to retract based on the instruction signal, so that the part of the electronic control telescoping mechanism 20 extending out of the shell 10 is retracted into the shell 10.
Optionally, as shown in fig. 1, the electronic control telescoping mechanism 20 includes an electronic control cylinder 201 and a telescoping plate 202, a piston rod of the electronic control cylinder 201 is connected to the telescoping plate 202, the telescoping plate 202 is parallel to an axial direction of the piston rod of the electronic control cylinder 201, a cylinder body of the electronic control cylinder 201 is located in the housing 10, and the electronic control cylinder 201 is electrically connected to the controller 40.
When the electric control telescopic mechanism 20 is located at the first position, the piston rod of the electric control oil cylinder 201 is contracted, so that the telescopic plate 202 is contracted back into the housing 10; when the electrically controlled telescopic mechanism 20 is located at the second position, the piston rod of the electrically controlled oil cylinder 201 extends out, so that the telescopic plate 202 extends out of the housing 10.
In the embodiment of the present disclosure, the electric control cylinder 201 may be a digital hydraulic cylinder. The digital hydraulic cylinder is a device which completes the extension and contraction control of a piston rod of the hydraulic cylinder through a digital pulse signal sent by the programmable logic controller 40.
When the pile shoe with the electrically controlled telescoping mechanism 20 works, if the controller 40 determines that the pile shoe falls into soft soil on the seabed based on the detected monitoring signal, the controller 40 can control the piston rod of the electrically controlled cylinder 201 to extend out to push the telescoping plate 202 to extend out of the housing 10, so that the telescoping plate 202 is pushed out from the side edge of the pile shoe and inserted into the seabed, and the electrically controlled telescoping mechanism 20 is switched from the first position to the second position. Because the part of the expansion plate 202 extending out of the shell 10 can increase the contact area of the pile shoe and the seabed, the pressure of the pile leg on the seabed is reduced, the occurrence of pile shoe puncture can be effectively prevented, and the problem that the ocean platform topples over is effectively avoided.
Optionally, a plurality of electric control cylinders 201 and a plurality of telescopic plates 202 can be arranged, and the axial directions of the piston rods of the plurality of electric control cylinders 201 face different directions, so that when the electric control cylinders 201 act, the telescopic plates 202 can be pushed to extend out from different directions, and the plurality of telescopic plates 202 are inserted into the seabed, so that the contact area between the pile shoe and the seabed is further increased, and the problem that the ocean platform topples is avoided.
Alternatively, as shown in fig. 1, the housing 10 includes: the side plate 101 and the two parallel support plates 102, two opposite side edges of the side plate 101 are respectively connected with the two support plates 102; the electric control oil cylinder 201 is connected with the support plate 102, and the expansion plate 202 is parallel to the support plate 102.
The side plate 101 may be located in the middle of the support plate 102, so that the side plate 101 and the two support plates 102 are spliced to form the i-shaped housing 10.
In the above implementation manner, the housing 10 does not adopt a solid block structure as an installation carrier of the electronic control telescoping mechanism 20, but adopts a splicing structure formed by splicing a plurality of plates, so that the manufacturing cost of the pile shoe can be effectively saved, and the housing 10 is lighter.
Illustratively, as shown in fig. 1, two electric control cylinders 201 and two expansion plates 202 are arranged in the spliced shell 10. The two electric control oil cylinders 201 are connected with a corresponding expansion plate 202, so that the expansion plate 202 is driven to expand and contract through the electric control oil cylinders 201.
And, the cylinder body of one electric control cylinder 201 is connected with one of the support plates 102, and the cylinder body of the other electric control cylinder 201 is connected with the other one of the support plates 102. Thus, the two electric control oil cylinders 201 are respectively arranged on the two support plates 102, so that the situation that too many electric control oil cylinders 201 are arranged on the same support plate 102 is avoided.
The distance between the two electric control oil cylinders 201 and the same supporting plate 102 is different, so that the two electric control oil cylinders 201 can be prevented from having the same distance from the same supporting plate 102, and the piston rods of the electric control oil cylinders 201 can interfere with each other when extending and retracting.
Optionally, the housing 10 further comprises a stiffener bar between the two support plates 102, and at least two of the side plates 101 and the two support plates 102 are connected to the stiffener bar.
Illustratively, the reinforcing bars are in the form of bars, one end of each reinforcing bar is connected to one of the support plates 102, and the other end of each reinforcing bar is connected to the side plate 101, so that the reinforcing bars, the support plates 102, and the side plates 101 together form a stable triangular structure to enhance the stability of the housing 10.
Optionally, as shown in fig. 1, the electronically controlled retracting mechanism 20 further includes: the pulley 203 and the support rod 204, one end of the support rod 204 is connected with the support plate 102, the other end of the support rod 204 is connected with the pulley 203, the pulley 203 is rotatably arranged on the support rod 204, and the pulley 203 is abutted against the expansion plate 202.
The support rods 204 are all arranged on the support plate 102 close to the seabed, the pulleys 203 are arranged at the end parts of the support rods 204, and the pulleys 203 abut against the expansion plate 202 to support the expansion plate 202, so that a piston rod of the electric control oil cylinder 201 is prevented from bearing large load. Meanwhile, the pulley 203 can roll relative to the retractable plate 202, which can reduce the friction between the retractable plate 202 and the support rod 204, so that the retractable plate 202 can be more smoothly retracted on the support rod 204.
Illustratively, as shown in fig. 1, each expansion plate 202 is configured with three support rods 204 and three pulleys 203, and the three support rods 204 are distributed on the support plate 102 in parallel. This supports the expansion plate 202 together by a plurality of expansion rods to improve the reliability of the support plate 102.
Fig. 2 is a schematic structural diagram of an electrically controlled telescopic mechanism 20 according to an embodiment of the present disclosure. As shown in fig. 2, the electrically controlled retracting mechanism 20 further includes: the scribing cutter 205 is located on the telescopic plate 202, the scribing cutter 205 and a piston rod of the electric control cylinder 201 are respectively located on two opposite side edges of the telescopic plate 202, the driving piece 206 is located on the telescopic plate 202, and the driving piece 206 is used for driving the scribing cutter 205 to reciprocate along the side edge of the telescopic plate 202 away from the electric control cylinder 201.
Illustratively, the cutting knife 205 may have a conical shape, and the large end of the cutting knife 205 is connected to the expansion plate 202, so that when the expansion plate 202 expands and contracts, the tip end of the cutting knife 205 faces the soft soil of the seabed, so that the cutting knife 205 is more easily inserted into the soft soil of the seabed.
In the above implementation manner, when the retractable plate 202 extends, the cutting knife 205 reciprocates along the side of the retractable plate 202 away from the electric control cylinder 201, so that the cutting knife 205 repeatedly cuts the soft soil on the seabed, so as to quickly dig a groove for the retractable plate 202 to extend out of the soft soil on the seabed, and insert the retractable plate 202 into the seabed.
Optionally, as shown in fig. 2, the driving member 206 includes an electrically controlled telescopic rod, one end of the electrically controlled telescopic rod is connected to the retractable plate 202, the other end of the electrically controlled telescopic rod is connected to the cutting knife 205, the electrically controlled telescopic rod is electrically connected to the controller 40, and the controller 40 is configured to control the electrically controlled telescopic rod to perform reciprocating expansion and contraction when the electrically controlled telescopic mechanism 20 is controlled to switch to the second position based on the monitoring signal.
The electric control telescopic rod can be an electric push rod, and the electric push rod is an electric driving device for converting the rotary motion of a motor into the linear reciprocating motion of the push rod.
In the above implementation manner, the electrically controlled telescopic rod is electrically connected to the controller 40, and if the controller 40 controls the piston rod of the electrically controlled oil cylinder 201 to push the retractable plate 202 to extend based on the monitoring signal, the controller 40 also controls the electrically controlled telescopic rod to extend and retract in a reciprocating manner at this time, so as to drive the cutting knife 205 to move in a reciprocating manner along the side edge of the retractable plate 202 away from the electrically controlled oil cylinder 201. This is done by repeatedly cutting the soft soil of the seabed by the cutting blade 205 to facilitate rapid insertion of the expansion plate 202 into the seabed.
When the pile shoe provided by the embodiment of the present disclosure is used, the expansion plate 202 on the pile shoe is in a retracted state in a normal state, that is, the expansion plate 202 is located in the housing 10, and the load sensor detects a monitoring signal indicating the strain on the surface of the housing 10 in real time during the working process of the pile shoe, so that the controller 40 can control the operation of the electronic control cylinder 201 based on the monitoring signal.
When the pile shoe is about to puncture due to some reason, the pressure on the surface of the shell 10 changes, the strain is greatly reduced, at the moment, the load sensor detects that the strain indicated by the monitoring signal is smaller than a set value, and after the controller 40 acquires the monitoring signal, the piston rod of the electric control oil cylinder 201 is controlled based on the monitoring signal to push the expansion plate 202 to extend out, so that the contact area between the pile shoe and the seabed is increased to 3 times of the original contact area, the pressure on the seabed is reduced to 1/3 of the original contact area, the puncture is greatly slowed down or eliminated, and the ocean platform is prevented from overturning.
After the pile leg falls into the sea bottom and is stable, the strain indicated by the monitoring signal is gradually increased from a state lower than a set value to a state higher than the set value at the moment, which indicates that the pile leg is stable in the sea bed, a technician is required to confirm whether the pile leg has a risk of overturning at the moment, if the risk of overturning does not exist, the technician inputs an instruction signal, and after receiving the instruction signal, the controller 40 controls the electronic control telescoping mechanism 20 to retract based on the instruction signal, so that the part of the electronic control telescoping mechanism 20 extending out of the shell 10 is retracted into the shell 10. This allows the recovery of the telescoping panels 202 to be manually controlled by a technician to ensure that the telescoping panels 202 are retracted only when the ocean platform is in a safe state.
Embodiments of the present disclosure provide a leg comprising a shoe as described above. Wherein a support plate 102 in the shell 10 of the shoe remote from the seabed is connected to the bottom end of the leg.
Because the bottom of spud leg is provided with the spud shoe, and this spud shoe includes casing 10, automatically controlled telescopic machanism 20, detection piece 30 and controller 40, automatically controlled telescopic machanism 20 sets up in casing 10, and automatically controlled telescopic machanism 20 can be in primary importance and second place, and detection piece 30 also sets up in casing 10, and is used for detecting monitoring signal, and monitoring signal can be used for instructing the strain information on casing 10, wherein, controller 40 and automatically controlled telescopic machanism 20 and detection piece 30 electric connection.
Therefore, after the pile shoe falls into the soft soil on the seabed, the stress on the surface of the shell 10 changes, so that the strain on the surface of the shell 10 changes, the controller 40 can judge whether the pile shoe falls into the soft soil on the seabed or not by detecting the monitoring signal, and the controller 40 can control the electric control telescopic mechanism 20 to switch from the first position to the second position after determining that the pile shoe falls into the seabed based on the monitoring signal, so as to extend at least part of the electric control telescopic mechanism 20 out of the shell 10. So that the electric control telescoping mechanism 20 is pushed out from the side edge of the pile shoe and inserted into the seabed, and the part of the electric control telescoping mechanism 20 extending out of the shell 10 can increase the contact area between the pile shoe and the seabed, so that the pressure of the pile leg on the seabed is reduced, the occurrence of pile shoe puncture can be effectively prevented, and the problem of overturning of the ocean platform is effectively avoided.
Although the present disclosure has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure.
Claims (10)
1. A pile shoe, comprising:
a housing (10);
an electrically controlled telescoping mechanism (20) connected to the housing (10), the electrically controlled telescoping mechanism (20) being configured to be operably switched to a first position or a second position, the electrically controlled telescoping mechanism (20) being located within the housing (10) when the electrically controlled telescoping mechanism (20) is located in the first position, and at least a portion of the electrically controlled telescoping mechanism (20) being located outside the housing (10) when the electrically controlled telescoping mechanism (20) is located in the second position;
a detection member (30) located within the housing (10), the detection member (30) being for detecting a monitoring signal indicative of strain of the housing (10);
a controller (40) electrically connected to the electrically controlled telescoping mechanism (20) and the detecting member (30), respectively, wherein the controller (40) is configured to control the electrically controlled telescoping mechanism (20) to switch to the first position or the second position based on the monitoring signal.
2. The shoe of claim 1, wherein said controlling the electronically controlled telescoping mechanism (20) to switch to the first position or the second position based on the monitoring signal comprises:
and if the strain indicated by the monitoring signal is smaller than a set value, controlling the electric control telescopic mechanism (20) to be switched to the second position.
3. The pile shoe according to claim 1, wherein the electric control telescopic mechanism (20) comprises an electric control oil cylinder (201) and a telescopic plate (202), a piston rod of the electric control oil cylinder (201) is connected with the telescopic plate (202), the telescopic plate (202) is parallel to the axial direction of the piston rod of the electric control oil cylinder (201), a cylinder body of the electric control oil cylinder (201) is positioned in the shell (10), and the electric control oil cylinder (201) is electrically connected with the controller (40);
when the electric control telescopic mechanism (20) is located at the first position, the telescopic plate (202) is located in the shell (10), and when the electric control telescopic mechanism (20) is located at the second position, the telescopic plate (202) is located outside the shell (10).
4. The shoe according to claim 3, characterized in that the housing (10) comprises: the side plate comprises a side plate (101) and two parallel supporting plates (102), wherein two opposite side edges of the side plate (101) are respectively connected with the two supporting plates (102);
the electric control oil cylinder (201) is connected with the supporting plate (102), and the expansion plate (202) is parallel to the supporting plate (102).
5. The shoe of claim 4, wherein the electronically controlled telescoping mechanism (20) further comprises: pulley (203) and bracing piece (204), the one end of bracing piece (204) with backup pad (102) link to each other, the other end of bracing piece (204) with pulley (203) link to each other, pulley (203) rotationally sets up on bracing piece (204), pulley (203) with expansion plate (202) offset.
6. The pile shoe according to claim 4, characterized in that the housing (10) further comprises a reinforcement rib between the two support plates (102), at least two of the side plates (101) and the two support plates (102) being connected to the reinforcement rib.
7. The shoe of claim 3, wherein the electronically controlled telescoping mechanism (20) further comprises: draw cutting knife (205) and driving piece (206), draw cutting knife (205) to be located expansion plate (202), just draw cutting knife (205) with the piston rod of automatically controlled hydro-cylinder (201) is located respectively two opposite sides on expansion plate (202), driving piece (206) are located on expansion plate (202), driving piece (206) are used for the drive draw cutting knife (205) along keep away from on expansion plate (202) the side reciprocating motion of automatically controlled hydro-cylinder (201).
8. The pile shoe according to claim 7, wherein the driving member (206) comprises an electrically controlled telescopic rod, one end of the electrically controlled telescopic rod is connected to the expansion plate (202), the other end of the electrically controlled telescopic rod is connected to the cutting knife (205), the electrically controlled telescopic rod is electrically connected to the controller (40), and the controller (40) is configured to control the electrically controlled telescopic rod to expand and contract back and forth when the electrically controlled telescopic mechanism (20) is switched to the second position based on the monitoring signal.
9. The shoe according to any of claims 1 to 8, characterized in that the detecting element (30) comprises a load cell.
10. A leg, characterized in that it comprises a shoe according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111196280.4A CN114016503B (en) | 2021-10-14 | 2021-10-14 | Pile shoe and pile leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111196280.4A CN114016503B (en) | 2021-10-14 | 2021-10-14 | Pile shoe and pile leg |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114016503A true CN114016503A (en) | 2022-02-08 |
| CN114016503B CN114016503B (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111196280.4A Active CN114016503B (en) | 2021-10-14 | 2021-10-14 | Pile shoe and pile leg |
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| CN (1) | CN114016503B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201326174Y (en) * | 2008-11-19 | 2009-10-14 | 中国石油集团长城钻探工程有限公司 | Jack-up retractable fin pile shoe for drilling platform |
| CN103422500A (en) * | 2013-08-02 | 2013-12-04 | 江苏科技大学 | Overturn-resistant self-elevating platform pile shoe |
| CN204286491U (en) * | 2014-12-09 | 2015-04-22 | 浙江海洋学院 | A kind of based on pressure sensing shoe puncture supervising device |
| CN105002877A (en) * | 2015-06-30 | 2015-10-28 | 浙江海洋学院 | Overturn preventing system for self-elevating ocean platform |
| CN107090818A (en) * | 2017-05-05 | 2017-08-25 | 中国石油大学(华东) | Drill bit power-assisted jack-up unit shoe |
-
2021
- 2021-10-14 CN CN202111196280.4A patent/CN114016503B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201326174Y (en) * | 2008-11-19 | 2009-10-14 | 中国石油集团长城钻探工程有限公司 | Jack-up retractable fin pile shoe for drilling platform |
| CN103422500A (en) * | 2013-08-02 | 2013-12-04 | 江苏科技大学 | Overturn-resistant self-elevating platform pile shoe |
| CN204286491U (en) * | 2014-12-09 | 2015-04-22 | 浙江海洋学院 | A kind of based on pressure sensing shoe puncture supervising device |
| CN105002877A (en) * | 2015-06-30 | 2015-10-28 | 浙江海洋学院 | Overturn preventing system for self-elevating ocean platform |
| CN107090818A (en) * | 2017-05-05 | 2017-08-25 | 中国石油大学(华东) | Drill bit power-assisted jack-up unit shoe |
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| Publication number | Publication date |
|---|---|
| CN114016503B (en) | 2023-06-27 |
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