CN113062369A - Device and method suitable for detecting position of pile shoe of cylindrical pile leg lifting system - Google Patents
Device and method suitable for detecting position of pile shoe of cylindrical pile leg lifting system Download PDFInfo
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- CN113062369A CN113062369A CN202110271543.7A CN202110271543A CN113062369A CN 113062369 A CN113062369 A CN 113062369A CN 202110271543 A CN202110271543 A CN 202110271543A CN 113062369 A CN113062369 A CN 113062369A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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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
- E02B17/0034—Maintenance, repair or inspection of offshore constructions
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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
- 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
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
A device and a method suitable for detecting the position of a pile shoe of a cylindrical pile leg lifting system are disclosed, wherein a sleeve of an adjusting mechanism is connected with a base of a jacking mechanism, a limiting mechanism is positioned in the sleeve and connected with the base, a sealing device is covered outside the sleeve, a signal detection device is positioned in the sealing device and connected with a cover plate of the adjusting mechanism, an ejector rod of the adjusting mechanism penetrates through the limiting mechanism and the adjusting mechanism and extends out of the base, the lifting system lifts the pile leg to drive the pile shoe to be abutted against the ejector rod to push the ejector rod to ascend, the ejector rod is detected by the signal detection device when ascending, and the starting, the stopping and the lifting speed. The invention overcomes the problem that the original pile leg is easy to damage and deform when colliding with a ship body because an operator visually judges the position of entering the well when lifting. The pile shoe lifting device has the characteristics of simple structure, high lifting efficiency, simplicity and convenience in operation, and the pile shoe can enter the set position in the surrounding well under the platform without colliding with the bottom of the ship, can enter the well accurately, and can effectively avoid deformation of the pile leg and the bottom of the ship.
Description
Technical Field
The invention belongs to the technical field of ocean platforms, and relates to a device and a method suitable for detecting the position of a pile shoe of a cylindrical pile leg lifting system.
Background
With the continuous development of ocean technology, ocean platforms are more and more widely used, and common ocean platforms are all provided with corresponding lifting systems. Common lifting systems of ocean platforms can be divided into a rack and pinion type and a hydraulic bolt type, and because the manufacturing cost of the hydraulic bolt lifting system with the same tonnage is relatively low, the ocean platforms with the hydraulic bolt lifting systems are widely used in the field of offshore wind power in recent years. The hydraulic bolt lifting system is generally applied to a cylindrical pile leg, and the bottom of the pile leg is welded and fixed with a pile shoe.
When the ocean platform works, the ocean platform is lifted to a corresponding height from the sea level through the lifting system, and other equipment on the platform is assisted to work; when the ocean platform needs to be shifted to the next sea area for work, the ocean platform is lowered to the sea level through the lifting system, the pile legs are pulled out from the sea bottom and are collected into a surrounding well under the platform, and then the platform is shifted to the next sea area for work. When the platform is in towing or shifting, the pile shoe must be received at the lower surrounding well of the platform, otherwise, when the platform is in towing or shifting, the side edge of the pile shoe is impacted by sea waves, so that the bottom of the ocean platform is irregularly stressed, and the towing or shifting of the ocean platform is in danger. However, whether the pile shoe is completely received in the lower surrounding well of the platform is determined only by a middle-lower limiting program and is determined by observing the corresponding crew at the surrounding well in the pile fixing chamber. Particularly, in the debugging stage, a crew observes at the position of the surrounding well of the pile fixing chamber, so that misoperation is easy to occur, pile shoes are impacted and even tear the surrounding well (bottom) under the platform, the bottom and the pile legs are deformed, and the working efficiency of the platform is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method suitable for detecting the position of a pile shoe by a cylindrical pile leg lifting system, wherein the device and the method are simple in structure, a sleeve of an adjusting mechanism is connected with a base of a jacking mechanism, a limiting mechanism is positioned in the sleeve and connected with the base, a sealing device covers the sleeve, a signal detection device is positioned in the sealing device and connected with a cover plate of the adjusting mechanism, an ejector rod of the adjusting mechanism penetrates through the limiting mechanism and the adjusting mechanism and extends out of the base, the lifting pile leg of the lifting system drives the pile shoe to abut against the ejector rod to push the ejector rod to ascend, the ejector rod is detected by the signal detection device when ascending, the starting, the stopping and the lifting speed of the lifting system are controlled, the pile shoe does not collide with a ship bottom when entering a set position in a surrounding well under a platform, the well entering is accurate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a device suitable for detecting the position of a pile shoe of a cylindrical pile leg lifting system comprises a jacking mechanism, a limiting mechanism, an adjusting mechanism, a signal detection device and a sealing device; the limiting mechanism is located in a sleeve of the adjusting mechanism, the sleeve and a fixing pipe and a sealing device of the limiting mechanism are connected with a base of the jacking mechanism, a support of the signal detection device is connected with a cover plate of the adjusting mechanism, and the adjusting mechanism and the signal detection device are located in the sealing device.
The jacking mechanism comprises a mandril in sliding fit with the base and a baffle connected with the mandril.
And a sealing ring is arranged in the base and matched with the ejector rod.
The limiting mechanism comprises a screw rod matched with the thread of the fixed pipe and a bearing matched with the other end of the screw rod, and the bearing is connected with the limiting plate.
The adjusting mechanism comprises a cover plate connected with the upper end of the sleeve, a spring and an adjusting plate, wherein the spring and the adjusting plate are located in the sleeve, and the adjusting screw is matched with the cover plate and is connected with the adjusting plate.
The signal detection device comprises a first proximity switch and a second proximity switch which are connected with the bracket; the first proximity switch and the second proximity switch are located on one side of the ejector rod of the jacking mechanism.
The sealing device includes a drain tube in communication with the sealing boot.
The jacking rod of the jacking mechanism is positioned at the lower end part of the baffle and sequentially penetrates through the limiting plate and the base of the limiting mechanism, and the upper side surface of the limiting plate is contacted with the baffle.
The jacking rod of the jacking mechanism is positioned at the upper end part of the baffle plate and sequentially penetrates through the spring, the adjusting plate and the cover plate of the adjusting mechanism, and two ends of the spring are respectively abutted against the baffle plate and the adjusting plate.
The detection method of the device for detecting the position of the pile shoe, which is suitable for the cylindrical pile leg lifting system, comprises the following steps:
s1, mounting, namely connecting the bases of the plurality of jacking mechanisms with the ship body, inserting the ejector rods of the jacking mechanisms into the surrounding well under the platform, and vertically parallel to the pile shoe with the pile leg;
s2, lifting, starting the lifting system to lift the pile leg, enabling the pile shoe to rise synchronously with the pile leg, and enabling the pile shoe to gradually enter the lower surrounding well of the platform;
s3, detecting that the upper side surface of the pile shoe is abutted against the ejector rod to push the ejector rod to move upwards, and when the upper end of the ejector rod is close to the first proximity switch, the upper end of the ejector rod is induced by the first proximity switch, and the induction signal is transmitted to the lifting system;
s4, slowly lifting, and after the lifting system senses a signal of the first proximity switch, reducing the lifting speed of the pile leg to enable the pile leg to drive the pile shoe to slowly lift;
and S5, entering the well, further pushing the ejector rod to move upwards in the process that the pile shoe slowly rises, sensing by the second proximity switch when the upper end of the ejector rod is close to the second proximity switch, transmitting a sensing signal to the lifting system, stopping lifting by the lifting system, and enabling the pile shoe to completely enter the lower surrounding well of the platform and not to be in contact with the bottom of the ship.
A device suitable for detecting the position of a pile shoe of a cylindrical pile leg lifting system comprises a jacking mechanism, a limiting mechanism, an adjusting mechanism, a signal detection device and a sealing device; the limiting mechanism is located in a sleeve of the adjusting mechanism, the sleeve and a fixing pipe and a sealing device of the limiting mechanism are connected with a base of the jacking mechanism, a support of the signal detection device is connected with a cover plate of the adjusting mechanism, and the adjusting mechanism and the signal detection device are located in the sealing device. Simple structure, sleeve through adjustment mechanism is connected with climbing mechanism's base, stop gear is located the sleeve and is connected with the base, the sealing device cover is located outside the sleeve, signal detection device is located sealing device in with adjustment mechanism's cover connection, adjustment mechanism's ejector pin passes stop gear and adjustment mechanism and stretches out outside the base, operating system promotes the spud leg and drives the spud shoe and contradict with the ejector pin and promote the ejector pin and rise, detected by signal detection device when the ejector pin rises, control operating system opens and stops and promotes speed, the spud shoe gets into and encloses the interior settlement position of well under the platform and does not collide with the hull bottom, go into the well accurately, effectively avoid spud leg and hull bottom to warp, high lifting efficiency, and easy operation is convenient.
In a preferred scheme, the jacking mechanism comprises a jacking rod in sliding fit with the base and a baffle plate connected with the jacking rod. Simple structure, during the installation, the base is connected fixedly with the hull, and during the use, the body of rod of the ejector pin of baffle lower extreme slides along the base perpendicularly.
In a preferred scheme, a sealing ring is arranged in the base and matched with the ejector rod. Simple structure, during the use, when ejector pin and base slided, the sealing washer was sealed with the ejector pin cooperation, blockked that the water in the platform enclosed well down enters into in the sleeve.
In a preferred scheme, the limiting mechanism comprises a screw rod and a bearing, wherein the screw rod is in threaded fit with the fixed pipe, the bearing is matched with the other end of the screw rod, and the bearing is connected with the limiting plate. Simple structure, during the use, rotatory screw rod drive limiting plate risees or reduces, and limiting plate risees or reduces the in-process drive ejector pin and rise thereupon or rise.
In a preferred scheme, the adjusting mechanism comprises a cover plate connected with the upper end of the sleeve, a spring and an adjusting plate which are positioned in the sleeve, and an adjusting screw is matched with the cover plate and connected with the adjusting plate. Simple structure, during the use, rotatory adjusting screw drive regulating plate compresses the spring, and the decrement of regulating spring makes the ejector pin rise the in-process and slows down the impact force, and the in-process spring extension drive ejector pin resets when the pile shoe descends.
In a preferred scheme, the signal detection device comprises a first proximity switch and a second proximity switch which are connected with the bracket; the first proximity switch and the second proximity switch are located on one side of the ejector rod of the jacking mechanism. The structure is simple, and when the device is used, the first proximity switch is used for detecting that the pile shoe enters the lower surrounding well of the platform and sending a signal to the lifting system; the second proximity switch is used for limiting the lifting height of the pile shoe and avoiding the pile shoe from colliding with the bottom of the ship.
In a preferred arrangement, the sealing means comprises a drain tube in communication with the sealing boot. Simple structure, during the use, after in water gets into the sleeve, in the notch outflow entering sealed cowling of sleeve bottom, discharge through the drain pipe.
In an optimal scheme, the ejector rod of the jacking mechanism is positioned at the lower end part of the baffle and sequentially penetrates through the limiting plate and the base of the limiting mechanism, and the upper side face of the limiting plate is contacted with the baffle. Simple structure, during the use, limiting plate and baffle contact, the length that the restriction ejector pin stretches out the base.
In an optimized scheme, the part, located at the upper end of the baffle, of the ejector rod of the jacking mechanism sequentially penetrates through the spring, the adjusting plate and the cover plate of the adjusting mechanism, and two ends of the spring are respectively abutted against the baffle and the adjusting plate. Simple structure, during the use, during the ejector pin upward movement process, drive baffle compression spring, the upper end of ejector pin is close to first proximity switch and second proximity switch in proper order to the motion process.
In a preferred embodiment, the method for detecting the position of the pile shoe of the cylindrical leg hoisting system comprises the following steps:
s1, mounting, namely connecting the bases of the plurality of jacking mechanisms with the ship body, inserting the ejector rods of the jacking mechanisms into the surrounding well under the platform, and vertically parallel to the pile shoe with the pile leg;
s2, lifting, starting the lifting system to lift the pile leg, enabling the pile shoe to rise synchronously with the pile leg, and enabling the pile shoe to gradually enter the lower surrounding well of the platform;
s3, detecting that the upper side surface of the pile shoe is abutted against the ejector rod to push the ejector rod to move upwards, and when the upper end of the ejector rod is close to the first proximity switch, the upper end of the ejector rod is induced by the first proximity switch, and the induction signal is transmitted to the lifting system;
s4, slowly lifting, and after the lifting system senses a signal of the first proximity switch, reducing the lifting speed of the pile leg to enable the pile leg to drive the pile shoe to slowly lift;
and S5, entering the well, further pushing the ejector rod to move upwards in the process that the pile shoe slowly rises, sensing by the second proximity switch when the upper end of the ejector rod is close to the second proximity switch, transmitting a sensing signal to the lifting system, stopping lifting by the lifting system, and enabling the pile shoe to completely enter the lower surrounding well of the platform and not to be in contact with the bottom of the ship. The method is simple and convenient to operate, the first proximity switch sensing signal controls the lifting system to decelerate and the second proximity switch sensing signal controls the lifting system to stop lifting in the process of lifting the pile leg by the lifting system, and damage and deformation caused by collision of the pile shoe with the lower surrounding well of the platform and the bottom of the ship are effectively avoided.
A device and a method suitable for detecting the position of a pile shoe of a cylindrical pile leg lifting system comprise a jacking mechanism, a limiting mechanism, an adjusting mechanism, a signal detection device and a sealing device, wherein a sleeve passing through the adjusting mechanism is connected with a base of the jacking mechanism, the limiting mechanism is positioned in the sleeve and connected with the base, the sealing device is covered outside the sleeve, the signal detection device is positioned in the sealing device and connected with a cover plate of the adjusting mechanism, an ejector rod of the adjusting mechanism penetrates through the limiting mechanism and the adjusting mechanism to extend out of the base, the lifting system lifts the pile leg to drive the pile shoe to abut against the ejector rod to push the ejector rod to ascend, the ejector rod is detected by the signal detection device when ascending, and the starting, the stopping and the lifting. The invention overcomes the problem that the original pile leg is easy to damage and deform when colliding with a ship body because an operator visually judges the position of entering the well when lifting. The pile shoe lifting device has the characteristics of simple structure, high lifting efficiency, simplicity and convenience in operation, and the pile shoe can enter the set position in the surrounding well under the platform without colliding with the bottom of the ship, can enter the well accurately, and can effectively avoid deformation of the pile leg and the bottom of the ship.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the base of the present invention.
Fig. 3 is a schematic top view of fig. 2.
Fig. 4 is a schematic structural view of an adjusting screw of the present invention.
Fig. 5 is a schematic structural view of the carrier rod of the present invention.
Fig. 6 is a state diagram of the present invention in use.
Fig. 7 is a schematic view of the position of the invention in connection with leg installation.
In the figure: the device comprises a jacking mechanism 1, a base 11, an ejector rod 12, a baffle plate 13, a sealing ring 14, a limiting mechanism 2, a fixing pipe 21, a screw rod 22, a bearing 23, a limiting plate 24, an adjusting mechanism 3, a sleeve 31, a cover plate 32, a spring 33, an adjusting plate 34, an adjusting screw 35, a signal detection device 4, a support 41, a first proximity switch 42, a second proximity switch 43, a sealing device 5, a sealing cover 51 and a drain pipe 52.
Detailed Description
As shown in fig. 1 to 7, a device for detecting the position of a pile shoe for a cylindrical pile leg lifting system comprises a jacking mechanism 1, a limiting mechanism 2, an adjusting mechanism 3, a signal detection device 4 and a sealing device 5; the limiting mechanism 2 is located in a sleeve 31 of the adjusting mechanism 3, the sleeve 31, a fixing pipe 21 of the limiting mechanism 2 and the sealing device 5 are connected with a base 11 of the jacking mechanism 1, a support 41 of the signal detection device 4 is connected with a cover plate 32 of the adjusting mechanism 3, and the adjusting mechanism 3 and the signal detection device 4 are located in the sealing device 5. Simple structure, sleeve 31 through adjustment mechanism 3 is connected with climbing mechanism 1's base 11, stop gear 2 is located sleeve 31 and is connected with base 11, sealing device 5 covers and locates outside sleeve 31, signal detection device 4 is located sealing device 5 and is connected with adjustment mechanism 3's apron 32, adjustment mechanism 3's ejector pin 12 passes stop gear 2 and adjustment mechanism 3 and stretches out outside base 11, operating system promotes the spud leg and drives the spud shoe and contradict with ejector pin 12 and promote ejector pin 12 and rise, detected by signal detection device 4 when ejector pin 12 rises, control operating system opens and stops and lifting speed, the setting position that the spud shoe got into in the platform lower bounding well does not collide with the hull bottom, it is accurate to go into the well, effectively avoid spud leg and hull bottom to warp, high lifting efficiency, and easy operation is convenient.
In a preferred scheme, the jacking mechanism 1 comprises a jacking rod 12 in sliding fit with the base 11, and a baffle plate 13 connected with the jacking rod 12. Simple structure, during the installation, base 11 is fixed with the hull connection, and during the use, the body of rod of ejector pin 12 of baffle 13 lower extreme slides along base 11 vertically.
Preferably, the base 11 is a cylindrical body, and a fixing plate and a flange are respectively arranged at two ends of the base, the fixing plate is connected with the ship body, and the flange is connected with the sealing device 5.
In a preferred scheme, a sealing ring 14 is arranged in the base 11 and is matched with the ejector rod 12. Simple structure, during the use, when ejector pin 12 and base 11 slide, sealing washer 14 is sealed with the cooperation of ejector pin 12, blocks that the water in the wall well under the platform enters into in the sleeve 31.
In a preferred scheme, the limiting mechanism 2 comprises a screw 22 in threaded fit with the fixed pipe 21 and a bearing 23 matched with the other end of the screw 22, and the bearing 23 is connected with a limiting plate 24. Simple structure, during the use, rotatory screw rod 22 drives limiting plate 24 and rises or descends, and limiting plate 24 rises or the in-process drive ejector pin 12 rises or rises thereupon.
In a preferred embodiment, the adjusting mechanism 3 includes a cover plate 32 connected to the upper end of the sleeve 31, and a spring 33 and an adjusting plate 34 located inside the sleeve 31, and an adjusting screw 35 is engaged with the cover plate 32 and connected to the adjusting plate 34. Simple structure, during the use, rotatory adjusting screw 35 drive regulating plate 34 compresses spring 33, and the decrement of regulating spring 33 makes ejector pin 12 rise in-process and slows down the impact force, and spring 33 extends the drive ejector pin 12 and resets when the pile shoe descends in-process.
Preferably, a wear-resistant ring is arranged on the upper side of the adjusting plate 34, an adjusting screw 35 passes through the wear-resistant ring to be matched with a through hole in the adjusting plate 34, and the adjusting screw 35 is abutted against the wear-resistant ring.
In a preferred embodiment, the signal detection device 4 comprises a first proximity switch 42 and a second proximity switch 43 connected to the bracket 41; the first proximity switch 42 and the second proximity switch 43 are located on the ram 12 side of the jack 1. The structure is simple, when in use, the first proximity switch 42 is used for detecting that the pile shoe enters the lower surrounding well of the platform and sending a signal to the lifting system; the second proximity switch 43 is used to limit the elevation height of the shoe to avoid the shoe hitting the bottom of the vessel.
In a preferred embodiment, the sealing device 5 comprises a drain pipe 52 communicating with the sealing cover 51. The structure is simple, when in use, when water enters the sleeve 31, the water flows out from the notch at the bottom of the sleeve 31 into the sealing cover 51 and is discharged through the water discharge pipe 52.
Preferably, the drain pipe 52 communicates with the sealing cap 51 through a flange of the base 11 of the sleeve 31.
In an optimal scheme, the ejector rod 12 of the jacking mechanism 1 is positioned at the lower end part of the baffle 13 and sequentially penetrates through the limiting plate 24 and the base 11 of the limiting mechanism, and the upper side surface of the limiting plate 24 is in contact with the baffle 13. Simple structure, during the use, limiting plate 24 contacts with baffle 13, and the length that the restriction ejector pin 12 stretches out the base 11.
In a preferred scheme, the part of the top rod 12 of the jacking mechanism 1, which is positioned at the upper end of the baffle plate 13, sequentially passes through the spring 33, the adjusting plate 34 and the cover plate 32 of the adjusting mechanism 3, and two ends of the spring 33 respectively abut against the baffle plate 13 and the adjusting plate 34. Simple structure, during the use, during the upward motion of ejector pin 12, drive baffle 13 compression spring 33, the upper end of ejector pin 12 is to moving in-process and being close to first proximity switch 42 and second proximity switch 43 in proper order.
In a preferred embodiment, the method for detecting the position of the pile shoe of the cylindrical leg lifting system comprises the following steps:
s1, installing, namely connecting the bases 11 of the plurality of jacking mechanisms 1 with a ship body, inserting the ejector rods 12 of the jacking mechanisms 1 into a lower surrounding well of the platform, and vertically enabling the ejector rods 12 and the pile legs to be parallel to and perpendicular to pile shoes;
s2, lifting, starting the lifting system to lift the pile leg, enabling the pile shoe to rise synchronously with the pile leg, and enabling the pile shoe to gradually enter the lower surrounding well of the platform;
s3, detecting that the upper side surface of the pile shoe is abutted against the ejector rod 12 to push the ejector rod 12 to move upwards, and when the upper end of the ejector rod 12 is close to the first proximity switch 42, the upper end of the ejector rod 12 is induced by the first proximity switch 42, and the induced signal is transmitted to the lifting system;
s4, slowly lifting, and after sensing the signal of the first proximity switch 42, the lifting system reduces the lifting speed of the pile leg, so that the pile leg drives the pile shoe to slowly lift;
and S5, entering the well, further pushing the ejector rod 12 to move upwards in the process that the pile shoe slowly rises, sensing by the second proximity switch 43 when the upper end of the ejector rod 12 is close to the second proximity switch 43, transmitting a sensing signal to the lifting system, stopping lifting by the lifting system, and enabling the pile shoe to completely enter the lower surrounding well of the platform and not to be in contact with the bottom of the ship. The method is simple and convenient to operate, in the process of lifting the pile leg by the lifting system, the first proximity switch 42 senses a signal to control the speed of the lifting system to be reduced, and the second proximity switch 43 senses a signal to control the lifting system to stop lifting, so that the damage and deformation caused by the collision of the pile shoe with the lower surrounding well of the platform and the bottom of the ship are effectively avoided.
When the device and the method for detecting the position of the pile shoe by the cylindrical pile leg lifting system are installed and used, the sleeve 31 of the adjusting mechanism 3 is connected with the base 11 of the jacking mechanism 1, the limiting mechanism 2 is positioned in the sleeve 31 and connected with the base 11, the sealing device 5 covers the sleeve 31, the signal detection device 4 is positioned in the sealing device 5 and connected with the cover plate 32 of the adjusting mechanism 3, the ejector rod 12 of the adjusting mechanism 3 penetrates through the limiting mechanism 2 and the adjusting mechanism 3 and extends out of the base 11, the lifting system lifts the pile leg to drive the pile shoe to abut against the ejector rod 12 to push the ejector rod 12 to ascend, the ejector rod 12 is detected by the signal detection device 4 when ascending, the starting, stopping and lifting speed of the lifting system are controlled, the pile shoe enters a set position in a lower surrounding well of a platform and does not collide with the bottom of a ship, the entering into the well is accurate, the deformation of the pile leg and the bottom.
When in use, the rod body of the mandril 12 at the lower end of the baffle 13 vertically slides along the base 11.
When the device is used, when the ejector rod 12 slides with the base 11, the sealing ring 14 is matched and sealed with the ejector rod 12, and water in a surrounding well under the platform is prevented from entering the sleeve 31.
When the lifting device is used, the screw rod 22 is rotated to drive the limit plate 24 to lift or lower, and the limit plate 24 drives the ejector rod 12 to lift or lift along with the limit plate in the lifting or lowering process.
When the device is used, the adjusting screw 35 is rotated to drive the adjusting plate 34 to compress the spring 33, the compression amount of the spring 33 is adjusted, so that impact force is relieved in the rising process of the ejector rod 12, and the spring 33 extends to drive the ejector rod 12 to reset in the falling process of the pile shoe.
In use, the first proximity switch 42 is used to detect entry of a pile shoe into the lower well of the platform and to signal the lifting system; the second proximity switch 43 is used to limit the elevation height of the shoe to avoid the shoe hitting the bottom of the vessel.
When in use, when water enters the sleeve 31, the water flows out of the notch at the bottom of the sleeve 31 into the sealing cover 51 and is discharged through the drain pipe 52.
When the device is used, the limit plate 24 is contacted with the baffle 13 to limit the length of the ejector rod 12 extending out of the base 11.
When the device is used, the baffle plate 13 is driven to compress the spring 33 in the upward movement process of the ejector rod 12, and the upper end of the ejector rod 12 sequentially approaches the first proximity switch 42 and the second proximity switch 43 in the upward movement process.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a device suitable for cylinder spud leg operating system detects pile shoe position which characterized by: the device comprises a jacking mechanism (1), a limiting mechanism (2), an adjusting mechanism (3), a signal detection device (4) and a sealing device (5); the limiting mechanism (2) is located in a sleeve (31) of the adjusting mechanism (3), the sleeve (31) and a fixing pipe (21) and a sealing device (5) of the limiting mechanism (2) are connected with a base (11) of the jacking mechanism (1), a support (41) of the signal detection device (4) is connected with a cover plate (32) of the adjusting mechanism (3), and the adjusting mechanism (3) and the signal detection device (4) are located in the sealing device (5).
2. The apparatus of claim 1 adapted for use with a cylindrical leg lift system for detecting the position of a shoe, wherein: the jacking mechanism (1) comprises a mandril (12) which is in sliding fit with the base (11) and a baffle (13) which is connected with the mandril (12).
3. The apparatus of claim 1 adapted for use with a cylindrical leg lift system for detecting the position of a shoe, wherein: a sealing ring (14) is arranged in the base (11) and matched with the ejector rod (12).
4. The apparatus of claim 1 adapted for use with a cylindrical leg lift system for detecting the position of a shoe, wherein: stop gear (2) including fixed pipe (21) screw-thread fit's screw rod (22) to and with screw rod (22) other end complex bearing (23), bearing (23) are connected with limiting plate (24).
5. The apparatus of claim 1 adapted for use with a cylindrical leg lift system for detecting the position of a shoe, wherein: the adjusting mechanism (3) comprises a cover plate (32) connected with the upper end of the sleeve (31), a spring (33) and an adjusting plate (34) located in the sleeve (31), and an adjusting screw (35) is matched with the cover plate (32) and is connected with the adjusting plate (34).
6. The apparatus of claim 1 adapted for use with a cylindrical leg lift system for detecting the position of a shoe, wherein: the signal detection device (4) comprises a first proximity switch (42) and a second proximity switch (43) which are connected with a bracket (41); the first proximity switch (42) and the second proximity switch (43) are positioned on one side of the ejector rod (12) of the jacking mechanism (1).
7. The apparatus of claim 1 adapted for use with a cylindrical leg lift system for detecting the position of a shoe, wherein: the sealing device (5) comprises a drain pipe (52) communicated with the sealing cover (51).
8. The apparatus of claim 1 adapted for use with a cylindrical leg lift system for detecting the position of a shoe, wherein: the jacking rod (12) of the jacking mechanism (1) is positioned at the lower end part of the baffle (13) and sequentially penetrates through the limiting plate (24) and the base (11) of the limiting mechanism, and the upper side surface of the limiting plate (24) is in contact with the baffle (13).
9. The apparatus of claim 1 adapted for use with a cylindrical leg lift system for detecting the position of a shoe, wherein: the jacking rod (12) of the jacking mechanism (1) is positioned at the upper end part of the baffle (13) and sequentially penetrates through the spring (33), the adjusting plate (34) and the cover plate (32) of the adjusting mechanism (3), and two ends of the spring (33) are respectively abutted against the baffle (13) and the adjusting plate (34).
10. A method of detecting a shoe position in a cylindrical leg lift system according to any of claims 1 to 9, comprising the steps of:
s1, mounting, namely connecting bases (11) of a plurality of jacking mechanisms (1) with a ship body, enabling ejector rods (12) of the jacking mechanisms (1) to go deep into a surrounding well under a platform, and enabling the ejector rods (12) and pile legs to be vertically parallel and perpendicular to pile shoes;
s2, lifting, starting the lifting system to lift the pile leg, enabling the pile shoe to rise synchronously with the pile leg, and enabling the pile shoe to gradually enter the lower surrounding well of the platform;
s3, detecting that the upper side surface of the pile shoe is abutted against the ejector rod (12) to push the ejector rod (12) to move upwards, sensing by the first proximity switch (42) when the upper end of the ejector rod (12) is close to the first proximity switch (42), and transmitting a sensing signal to the lifting system;
s4, slowly lifting, and after the lifting system senses a signal of the first proximity switch (42), reducing the lifting speed of the pile leg to enable the pile leg to drive the pile shoe to slowly lift;
and S5, entering the well, further pushing the ejector rod (12) to move upwards in the process that the pile shoe slowly rises, sensing by the second proximity switch (43) when the upper end of the ejector rod (12) is close to the second proximity switch (43), transmitting a sensing signal to the lifting system, stopping lifting by the lifting system, and enabling the pile shoe to completely enter the lower well of the platform and not to be in contact with the bottom of the ship.
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