Detachable ice-resistant cone suitable for cylindrical pile leg of self-elevating platform

Abstract

The invention discloses a detachable ice-resistant piton suitable for a cylindrical pile leg of a self-elevating platform, which comprises two parts of ice-resistant piton bodies, one part is called as a positive piton, the other part is called as an inverted piton, the positive piton and the inverted piton are connected to form the whole ice-resistant piton, each ice-resistant piton body is formed by splicing two half ice piton parts, and the two half ice piton parts are arranged in a staggered manner. Each half ice piton comprises an ice-resistant piton body, an ice-resistant piton cover body, a sliding rod spring locking device, a spring reset supporting system and a U-shaped clamping groove; the ice-resistant piton body is of a symmetrical structure and comprises a half inner ring part located in the middle and triangular folding parts located on the two sides. A sliding rod spring locking device and a U-shaped clamping groove are formed in the centers of the two triangular involution parts of one half ice piton respectively, the sliding rod spring locking device and the U-shaped clamping groove are matched with each other, and one half ice piton is connected with the U-shaped clamping groove of the other half ice piton through the sliding rod spring locking device after being turned over to form an ice-resistant piton body in a splicing mode; the spring reset supporting system is used for fixing the ice-resistant cone body to the cylindrical pile leg of the self-elevating platform.

Description

Technical Field

[0001] The invention relates to the field of structural anti-icing technology design, and particularly relates to a detachable anti-icing cone applicable to the cylindrical leg of a jack-up platform. Background Art

[0002] For a cylindrical leg jack-up platform operating in an ice area, reducing the ice load on its legs is the primary problem to ensure the safe service of such structures in the ice area.

[0003] Installing anti-icing cones is an effective way to reduce ice loads. However, for a jack-up platform, since the legs need to be retracted and extended during the displacement process, it is difficult to directly weld anti-icing cones on the platform legs like a fixed platform. Also, because the diameter of the cylindrical legs of a jack-up platform is usually greater than 3 meters, this results in a huge size of the effective anti-icing cone. After installing the anti-icing cone, the wave load of the platform during the non-ice period will be significantly increased.

[0004] To solve this problem, the present invention designs a detachable anti-icing cone, which can be quickly and conveniently disassembled and installed when the platform retracts and extends its legs or operates in the ice area, to meet the functional requirements of the platform legs. At the same time, during non-ice period operations, by quickly disassembling and recycling, the problem of increasing wave load is avoided. Summary of the Invention

[0005] The present invention provides a detachable anti-icing cone to solve the problem that the existing fixed anti-icing device cannot adapt to the lifting and lowering of the legs during the displacement process of a jack-up platform. The anti-icing cone provided by the present invention cleverly utilizes the structural characteristics of the cylindrical legs of a jack-up platform, uses a support rod to support in the pin holes of the cylindrical legs, and realizes quick connection and installation through an automatic locking device.

[0006] The present invention is realized through the following technical solutions:

[0007] A detachable anti-icing cone applicable to the cylindrical legs of a jack-up platform includes two parts of anti-icing cone bodies. One part is called the positive cone, and the other part is called the inverted cone. The positive cone and the inverted cone are connected to form the whole anti-icing cone. Each anti-icing cone body is spliced by two half-ice cones. One half-ice cone includes an anti-icing cone body 1, an anti-icing cone cover 7, a slide rod spring locking device 2, a spring reset support system 5, and a U-shaped card slot 6; the anti-icing cone body 1 is a symmetric structure, including a semi-inner ring part in the middle and triangular mating parts on both sides; the centers of the two triangular mating parts of one half-ice cone are respectively provided with a slide rod spring locking device 2 and a U-shaped card slot 6. The slide rod spring locking device 2 and the U-shaped card slot 6 cooperate with each other. After one half-ice cone is flipped, it is connected to the U-shaped card slot of the other half-ice cone through the slide rod spring locking device to be spliced into an anti-icing cone body; the spring reset support system 5 is used to fix the anti-icing cone body on the cylindrical leg of the jack-up platform.

[0008] Furthermore, the slide bar spring locking device 2 includes a housing 2-6, a slide bar sleeve 2-1 located inside the housing 2-6, a slide bar 2-2, a vertical limiting rod 2-3, a spring connection ring 2-4, a locking spring 2-5, a T-shaped folding buckle 2-7, a connecting rod 2-8, and a rotating shaft 2-9. The housing 2-6 includes a bottom end, a top end, and a side surface. Square grooves 2-10 are respectively provided at the top end of the housing and on two side surfaces close to the top end of the housing to allow the slide bar 2-2 and the locking spring 2-5 to freely slide and expand. The bottom of the slide bar sleeve 2-1 is fixed to the inner surface of the bottom end of the housing 2-6. One end of the slide bar 2-2 extends into the slide bar sleeve 2-1 and protrudes from the top end of the housing 2-6. A vertical limiting rod 2-3 is fixedly connected to the part of the slide bar 2-2 located inside the housing 2-6. The vertical limiting rod 2-3 is restricted by the top end of the housing 2-6, and spring connection rings 2-4 are respectively installed at both ends of the vertical limiting rod 2-3. Two connecting rods 2-8 are provided at the top end of the housing 2-6, and the two connecting rods 2-8 are respectively located on both sides of the slide bar 2-2. The two ends of the locking spring 2-5 are respectively connected to the spring connection ring 2-4 of the vertical limiting rod 2-3 and the spring connection ring 2-4 of the T-shaped folding buckle 2-7. The connecting rod 2-8 is connected to the T-shaped folding buckle 2-7 through the rotating shaft 2-9 to ensure the rotation action of the buckle.

[0009] Furthermore, after the slide bar 2-2 is extruded by the U-shaped card slot 6, it is retracted into the slide bar sleeve 2-1. With the movement of the slide bar 2-2, the vertical limiting rod 2-3 drives the locking spring 2-5 to contract, and then pulls the T-shaped folding buckle 2-7 to rotate and enter the U-shaped card slot 6, so that the two anti-ice cones are tightly connected and locked.

[0010] Furthermore, the spring reset support system 5 includes a support rod 5-1, a reset spring 5-2, and a support rod sleeve 5-3. The support rod sleeve 5-3 is placed inside the ice cone cavity and is provided with a reset spring 5-2. The support rod 5-1 is embedded in the support rod sleeve 5-3. One end of the reset spring 5-2 is connected to the bottom of the support rod sleeve 5-3, and the other end is connected to the bottom of the support rod 5-1. The top of the support rod 5-1 pops out under normal conditions. The support rod 5-1 cooperates with the pin hole opened on the pile leg.

[0011] Furthermore, when the support rod 5-1 is aligned with the pin hole, it automatically pops out and is embedded under the action of the reset spring 5-2, and then inserts into the pin hole of the pile leg to realize the support and fixation of the anti-ice cone.

[0012] Furthermore, a pull ring 3 is provided on the anti-ice cone cover.

[0013] Due to the adoption of the above technical solutions, the present invention has the following advantages: 1. The detachable feature enables it to flexibly adapt to the operation requirements of the jack-up platform in different environments without affecting the retraction and extension functions of the jack-up platform's legs. 2. It ingeniously utilizes the pin holes on the legs of the jack-up platform and is externally mounted on the legs of the jack-up platform in combination with an automatic locking mechanism without welding operations, and will not cause any impact or damage to the leg structure of the platform due to installation. 3. An innovative automatic locking and release mechanism is designed on the mating surface of the ice cone, making the operations of connecting, fixing, and disassembling the ice cone simple and convenient, and greatly simplifying the process of offshore construction operations. 4. It consists of two symmetrical semi-ice cones, and the structures of the two anti-ice cones are exactly the same, facilitating unified processing and manufacturing and reducing the manufacturing cost. 5. The structure is simple, can be reused repeatedly, and is easy to repair. Description of the Drawings

[0014] Figure 1 It is a three-dimensional schematic diagram of one semi-ice cone structure of the anti-ice cone of the present invention.

[0015] Figure 2 It is an axial test diagram of the spring reset support system of the present invention.

[0016] Figure 3 It is an isometric view of the separated state of the locking device of the present invention.

[0017] Figure 4 It is an isometric view of the locked state of the locking device of the present invention.

[0018] Figure 5 It is a three-dimensional isometric perspective view after the anti-ice cone of the present invention is installed.

[0019] Figure 6 It is a separation schematic diagram of the anti-ice cone of the present invention.

[0020] Explanation of the reference numerals in the drawings: 1 is the anti-ice cone body; 2 is the slide rod spring locking device; 3 is the pull ring; 4 is the sealing strip; 5 is the spring reset support system, 6 is the U-shaped card slot, and 7 is the anti-ice cone cover. Detailed Embodiment

[0021] The present invention will be further described below in conjunction with the drawings and embodiments. As Figures 1 to 5 shown, the present invention mainly includes: 1 is the anti-ice cone body; 2 is the slide rod spring locking device; 2-1 is the slide rod sleeve, 2-2 is the slide rod, 2-3 is the vertical limiting rod, 2-4 is the spring connection ring, 2-5 is the locking spring, 2-6 is the outer shell, 2-7 is the T-shaped folding buckle, 2-8 is the connecting rod, 2-9 is the rotating shaft, 2-10 is the square groove; 3 is the pull ring; 4 is the sealing strip; 5 is the spring reset support system, 5-1 is the support rod, 5-2 is the reset spring, 5-3 is the support rod sleeve; 6 is the U-shaped card slot; 7 is the anti-ice cone cover.

[0022] The detachable anti-ice cone of the present invention comprises two cones with the same upper and lower symmetrical structures, one of which is called a positive cone and the other is called an inverted cone. The positive cone and the inverted cone are connected to form the whole anti-ice cone, and the cone angle is 60°, so that when the water level is high or low, the positive cone and the inverted cone can be used to achieve bending and breaking of ice, thereby achieving the purpose of reducing ice load. The three-dimensional axonometric perspective view of the anti-ice cone after installation is as follows Figure 5 As shown in the figure, the interior of the anti-ice spike is a hollow structure to reduce the weight of the structure itself and facilitate offshore installation. The inner diameter of the inner ring surface of the anti-ice spike is the same as the outer diameter of the jack-up platform pile leg, forming a gap fit between the pile leg and the anti-ice spike.

[0023] Each cone is made up of two half ice cones connected by a connecting device. The structure of a half ice cone is as follows: Figure 1 As shown, it is composed of an anti-ice cone body 1, an anti-ice cone cover 7, a slide rod spring locking device 2, a spring return support system 5 and a U-shaped slot 6. When working, one half of the ice cone flips 180° and is connected to the other half of the ice cone U-shaped slot through the slide rod spring locking device to achieve a stable splicing. The anti-ice cone body 1 is symmetrical on the left and right, including a semi-inner ring part located in the middle and triangular matching parts located on both sides. A spring return support system 5 is provided in the center of the semi-inner ring part. The spring return support system 5 has a built-in return spring. It is in a pop-up state in the working state and can be retracted into the ice cone cavity when subjected to external pressure. A slide rod spring locking device 2 and a U-shaped slot 6 are respectively provided in the centers of the two triangular matching parts of a half-ice cone. The slide rod spring locking device 2 and the U-shaped slot 6 are locking devices used in conjunction with each other, which can realize the rapid locking of the two half-ice cones, thereby forming a completed anti-ice cone body.

[0024] Through the support of the spring return support system 5, and the locking of the slide rod spring locking device 2 and the U-shaped slot 6, the anti-ice cone is finally firmly installed on the cylindrical self-elevating platform pile leg. Sealing strips 4 are provided at the upper and lower ends of the inner ring surface of the anti-ice cone and the docking connection boundary to achieve a sealed state after installation, ensure water tightness, and prevent seawater from eroding the internal structure of the ice cone. A pull ring 3 is provided on the outer extension of the interface between the positive cone and the inverted cone of the anti-ice cone. When disassembling the ice cone, the pull ring is connected with a disassembly tool, and the slide rod spring locking device 2 can be pulled out of the U-shaped slot 6 by applying a pulling force, thereby realizing the separation of the two halves of the ice cone and achieving the purpose of rapid disassembly.

[0025] The structure of the spring return support system 5 is as follows: Figure 2 As shown, it mainly includes a support rod 5-1, a return spring 5-2 and a support rod sleeve 5-3. The support rod sleeve 5-3 is built into the ice cone cavity, and a return spring 5-2 is arranged at the center thereof. The support rod 5-1 is embedded in the support rod sleeve 5-3, and one end of the return spring 5-2 is connected to the bottom of the support rod sleeve 5-3, and the other end is connected to the bottom of the support rod 5-1. The support rod 5-1 pops out in a normal state, and can be retracted into the inside of the anti-ice cone when pressed by external force. There are a plurality of pin holes (Figure 6 The position of the pin hole is shown in the figure), the size of the support rod 5-1 designed in the present invention is determined according to the size of the pin hole, and matched therewith, when the semi-ice cone fits the pile leg, there is no need to accurately align it with the pin hole, and the anti-ice cone only needs to be moved up and down along the pile leg. When the support rod 5-1 is aligned with the pin hole, it automatically pops out and embeds under the action of the reset spring 5-2, and then is inserted into the pin hole of the pile leg to achieve support and fixation of the anti-ice cone.

[0026] like Figure 3 and Figure 4 As shown, the slide rod spring locking device 2 includes a housing 2-6, a slide rod sleeve 2-1 located in the housing 2-6, a slide rod 2-2, a vertical limit rod 2-3, a spring connecting ring 2-4, a locking spring 2-5, a T-shaped folding buckle 2-7, a connecting rod 2-8 and a rotating shaft 2-9. The housing is a regular hexahedron, including a bottom end, a top end and four side surfaces. The top end of the housing and two side surfaces close to the top end of the housing are provided with a square groove 2-10 to allow the slide rod 2-2 and the locking spring 2-5 to slide and retract freely. The bottom of the slide rod sleeve 2-1 is fixed to the inner surface of the bottom end of the housing 2-6, one end of the slide rod 2-2 extends into the slide rod sleeve 2-1 and extends out of the top end of the housing 2-6, the slide rod 2-2 is located in the housing 2-6 and is fixedly connected to the vertical limit rod 2-3, the vertical limit rod 2-3 is limited by the top end of the housing 2-6, and the two ends of the vertical limit rod 2-3 are respectively provided with spring connecting rings 2-4. Two connecting rods 2-8 are arranged at the top of the housing 2-6, and the two connecting rods 2-8 are respectively located on both sides of the slide bar 2-2. The two ends of the locking spring 2-5 are respectively connected to the spring connecting ring 2-4 of the vertical limit rod 2-3 and the spring connecting ring 2-4 of the T-shaped folding buckle 2-7. A square groove 2-10 is arranged on the housing 2-6 to allow the locking spring 2-5 to freely extend and retract during operation. In addition, the connecting rod 2-8 is connected to the T-shaped folding buckle 2-7 through a rotating shaft 2-9 to ensure the rotation of the buckle. During the installation process, the slide bar 2-2 will be retracted into the slide bar sleeve 2-1 after being squeezed by the slot. As the slide bar 2-2 moves, the vertical limit rod 2-3 drives the locking spring 2-5 to contract, and then pulls the T-shaped folding buckle 2-7 to rotate and enter the U-shaped slot 6, so that the two anti-ice cones are tightly connected to achieve a stable lock. During disassembly, pulling force is applied to both sides of the anti-ice cone through the pull ring 3. During the separation process of the anti-ice cone, the U-shaped slot 6 pushes the T-shaped folding buckle 2-7 to return to the center around the rotating shaft 2-9 until it is disengaged from the U-shaped slot 6. At the same time, under the action of the locking spring 2-5, the slide rod 2-2 is driven to slide out of the slide rod sleeve 2-1 and return to the initial state, completing the unlocking, so that the connected anti-ice cone can be smoothly separated into two halves.

[0027] according to Figure 5As shown, after the ice cone fits onto the leg, move the ice cone up and down along the leg. After the spring reset support system 5 is inserted into the pin hole, it can provide vertical support force for the ice cone. At the same time, the ice cone is connected to the card slot of the other half of the ice cone through the slide bar spring locking device to form a locking structure, so as to provide horizontal restraint force to ensure the stable connection of the two parts of the ice cone, and thus be effectively installed on the leg of the jack-up platform. At the same time, the design of the sealing strip 4 ensures the watertightness inside the ice cone, prevents broken ice and seawater from entering, and protects the locking device from the erosion of seawater and broken ice.

[0028] As Figure 6 shown, pull rings 3 are provided on both sides of the ice cone. During disassembly, the pull rings 3 can be pulled by the ropes on the workboat to separate the ice cone. At the same time, through auxiliary systems such as cranes or pontoons, it can be connected to the pull rings 3 to keep the ice cone floating, so as to ensure the smooth progress of the disassembly process and provide convenience for subsequent installation and maintenance.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A detachable anti-ice cone suitable for a cylindrical pile leg of a self-elevating platform, comprising two anti-ice cone bodies, one part is called a positive cone, and the other part is called an inverted cone. The positive cone and the inverted cone are connected to form a whole anti-ice cone. Each anti-ice cone body is formed by splicing two half ice cones. One half ice cone comprises an anti-ice cone body (1), an anti-ice cone cover (7), a slide rod spring locking device (2), a spring return support system (5) and a U-shaped slot (6); the anti-ice cone body (1) is a symmetrical structure, including a spring return support system (5) and a U-shaped slot (6) in the middle. The semi-inner ring part and the triangular matching parts on both sides; the centers of the two triangular matching parts of a half-ice cone are respectively provided with a slide rod spring locking device (2) and a U-shaped card slot (6), the slide rod spring locking device (2) and the U-shaped card slot (6) cooperate with each other, and after a half-ice cone is turned over, it is connected with the U-shaped card slot of another half-ice cone through the slide rod spring locking device, and spliced ​​into an anti-ice cone body; the spring return support system (5) is used to fix the anti-ice cone body on the cylindrical pile leg of the self-elevating platform.

2. The detachable anti-ice pick according to claim 1, characterized in that: The slide rod spring locking device (2) comprises a shell (2-6), a slide rod sleeve (2-1) located in the shell (2-6), a slide rod (2-2), a vertical limit rod (2-3), a spring connecting ring (2-4), a locking spring (2-5), a T-shaped folding buckle (2-7), a connecting rod (2-8) and a rotating shaft (2-9); the shell (2-6) comprises a bottom end, a top end and a side surface, and the top end of the shell and two side surfaces close to the top end of the shell are respectively provided with square grooves (2-1) (0) to allow the slide rod (2-2) and the locking spring (2-5) to slide and retract freely; the bottom of the slide rod sleeve (2-1) is fixed to the inner surface of the bottom end of the shell (2-6), one end of the slide rod (2-2) extends into the slide rod sleeve (2-1) and extends out of the shell The top of the housing (2-6) is fixedly connected to the sliding rod (2-2) in the inner part of the housing (2-6), and the vertical limiting rod (2-3) is limited by the top of the housing (2-6), and spring connecting rings (2-4) are respectively installed at both ends of the vertical limiting rod (2-3); two connecting rods (2-8) are arranged at the top of the housing (2-6), and the two connecting rods (2-8) are respectively located on both sides of the sliding rod (2-2); the two ends of the locking spring (2-5) are respectively connected to the spring connecting ring (2-4) of the vertical limiting rod (2-3) and the spring connecting ring (2-4) of the T-shaped folding buckle (2-7); the connecting rod (2-8) is connected to the T-shaped folding buckle (2-7) through a rotating shaft (2-9) to ensure the rotation of the buckle.

3. The detachable anti-ice pick according to claim 2, characterized in that: After being squeezed by the U-shaped slot (6), the slide bar (2-2) is retracted into the slide bar sleeve (2-1); as the slide bar (2-2) moves, the vertical limit rod (2-3) drives the locking spring (2-5) to contract, thereby pulling the T-shaped folding buckle (2-7) to rotate and enter the U-shaped slot (6), so that the two anti-ice cones are tightly connected and locked.

4. The detachable anti-ice pick according to claim 1, characterized in that: The spring return support system (5) comprises a support rod (5-1), a return spring (5-2) and a support rod sleeve (5-3); the support rod sleeve (5-3) is built into the ice cone cavity and is provided with a return spring (5-2); the support rod (5-1) is embedded in the support rod sleeve (5-3), one end of the return spring (5-2) is connected to the bottom of the support rod sleeve (5-3), and the other end is connected to the bottom of the support rod (5-1); the top of the support rod (5-1) pops out in a normal state; The support rod (5-1) matches with the pin hole provided on the pile leg.

5. The detachable anti-ice pick according to claim 4, characterized in that: When the support rod (5-1) is aligned with the latch hole, it automatically pops out and embeds under the action of the reset spring (5-2), and then is inserted into the latch hole of the pile leg to achieve support and fixation of the anti-ice cone.

6. The detachable anti-ice pick according to claim 1, characterized in that: A pull ring (3) is provided on the anti-ice cone cover.

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