Pile leg guiding device, lifting system and self-elevating offshore platform
By adopting a detachable second pressure plate and stop block structure in the guidance device of the offshore platform, the problem of difficult replacement after the guide plate wears out is solved, realizing convenient replacement of the guidance device and reducing costs, thereby improving the safety and efficiency of the platform.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ZHENHUA HEAVY IND
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-17
AI Technical Summary
The guide plates of existing offshore platform guidance devices are difficult to replace after wear, resulting in high maintenance costs and affecting platform safety and operational efficiency.
A pile leg guiding device is designed, which adopts a detachable connection of a second pressure plate and a guide plate, combined with a stop block and pressure plate structure to ensure that the guide plate is stably installed and easy to replace. Wear-resistant materials are used to extend its service life.
This improves the service life and safety of the guiding device, reduces maintenance costs, and ensures the stable operation of the platform.
Smart Images
Figure CN224133694U_ABST
Abstract
Description
Technical Field
[0001] This application relates to offshore platforms, specifically to a leg guiding device, a lifting system, and a self-elevating offshore platform. Background Technology
[0002] Self-elevating offshore platforms include offshore oil drilling platforms and offshore wind power installation platforms. As a crucial component of self-elevating platforms, the jacking system has always been highly valued in the design and manufacture of these platforms, as its performance directly impacts the platform's safety and operational efficiency.
[0003] One type of self-elevating offshore platform uses a hydraulic cylinder lifting system. Each leg has two movable ring beams, and each ring beam has a pin and a pin cylinder that controls the insertion and removal of the pin. The relative movement of the legs and the platform is achieved by controlling the alternating movement of the two ring beams on the legs. During the insertion and removal of legs, excessive tilting angles can seriously threaten the platform's safety. Leg guiding devices can reduce the tilting angle of the legs during insertion, thus playing a crucial role in ensuring the smooth and safe operation of the lifting system. The guide plates in the offshore platform's guiding device wear down while providing guidance to the legs. After a certain degree of wear, the gap between the two guide plates increases, weakening its leg-aligning function. In such cases, new guide plates need to be replaced. However, replacing existing guide plates in offshore platform guiding devices is very difficult and costly. Utility Model Content
[0004] The purpose of this application is to provide a leg guide device, a lifting system, and a self-elevating offshore platform, which is simple to assemble, easy to replace, and can improve the service life and safety of the guide device while reducing maintenance costs.
[0005] To solve at least one of the above-mentioned technical problems, the technical solution of this application is as follows:
[0006] According to a first aspect of this application, a leg guiding device is provided for a jacking system of a self-elevating offshore platform. The leg guiding device includes two guiding components symmetrically arranged on the jacking frame of the jacking system and located on both sides of the leg. Each guiding component includes:
[0007] Guide plates, installed vertically, are used to guide the legs of jack-up offshore platforms;
[0008] Two stops are set on the lifting frame and located at the upper and lower ends of the guide plate to block the upper and lower ends of the guide plate.
[0009] The first pressure plate is detachably connected to the lifting frame;
[0010] The second pressure plate is set on the lifting frame. The first and second pressure plates are used to press and fix the guide plate on the lifting frame.
[0011] In one possible implementation of the first aspect described above, the first pressure plate is located on one side of the guide plate, and the second pressure plate is located on the other side of the guide plate.
[0012] In one possible implementation of the first aspect described above, each guiding component further includes:
[0013] The pad is fixed to the lifting frame and is located between two corresponding upper and lower stops;
[0014] The guide plate, the first pressure plate, and the second pressure plate are all located on the pad.
[0015] In one possible implementation of the first aspect above, the stop block is welded to the lifting frame, the pad is welded to the lifting frame, the first pressure plate is detachably connected to the pad by fasteners, and the second pressure plate is welded to the pad.
[0016] In one possible implementation of the first aspect described above, the pad is parallel to the guide plate.
[0017] In one possible implementation of the first aspect described above, a first inclined surface is provided on both sides of the guide plate, a second inclined surface is provided on the first pressure plate to cooperate with the corresponding first inclined surface, and a third inclined surface is provided on the second pressure plate to cooperate with the corresponding first inclined surface. The second and third inclined surfaces are used to press against their respective corresponding first inclined surfaces to press and fix the guide plate.
[0018] In one possible implementation of the first aspect described above, the guide plate is made of a wear-resistant material.
[0019] In one possible implementation of the first aspect described above, the guide plate is provided with multiple hoisting threaded holes;
[0020] The multiple lifting threaded holes on the guide plate are arranged in two symmetrical sets, one above the other.
[0021] According to a second aspect of this application, a lifting system is provided for a self-elevating offshore platform, including a leg guide device, the leg guide device being the same as the leg guide device described in the first aspect.
[0022] According to a third aspect of this application, a self-elevating offshore platform is provided, including the lifting system described in the second aspect above.
[0023] The above-mentioned technical solution of this application has at least one of the following beneficial effects:
[0024] According to the pile leg guiding device of this application, the pile leg guiding device includes two guiding components symmetrically arranged on the lifting frame of the lifting system and located on both sides of the pile leg. Each guiding component includes a guide plate arranged vertically for guiding the pile leg, two blocks arranged on the lifting frame and located at the upper and lower ends of the guide plate for blocking, and a first pressure plate and a second pressure plate for pressing and fixing the guide plate to the lifting frame, wherein the second pressure plate is detachably connected to the lifting frame. This application, through the detachable second pressure plate, makes the replacement of the guide plate convenient and simple, and the pile leg guiding device has a stable structure, enabling better guidance of the pile leg, improving the service life and safety of the guiding device, and reducing maintenance costs.
[0025] In addition, unless otherwise specified in the technical solution of this application, the technical solution can be implemented by conventional means in the field. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0027] Figure 1 This is a cross-sectional view of a pile leg guide device according to one embodiment of this application;
[0028] Figure 2 This is a schematic diagram of the structure of a pile leg guiding device according to one embodiment of this application;
[0029] Figure 3 This is a top-view cross-sectional view of a pile leg guide device according to one embodiment of this application;
[0030] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.
[0031] Explanation of the labels in the attached drawings:
[0032] Guide assembly 100; guide plate 110; first inclined surface 111; lifting threaded hole 112; stop block 120; first pressure plate 130; second inclined surface 131; second pressure plate 140; pad 150; fastener 160;
[0033] Lifting frame 200. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this application, and are used merely to explain this application and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "both ends," "both sides," "bottom," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," "upper-level," "lower-level," "main," and "secondary," etc., are used for descriptive purposes only and can be simply used to more clearly distinguish different components, and should not be construed as indicating or implying relative importance.
[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0037] See Figures 1-4 The diagram schematically illustrates a leg guide device according to an embodiment of this application, used in the lifting system of a jack-up offshore platform. The leg guide device includes two guide components 100 symmetrically arranged on a lifting frame 200 of the lifting system and located on both sides of the leg. The lifting frame 200 can be mounted on the main deck of the jack-up offshore platform. Each guide component 100 includes:
[0038] Guide plate 110, set vertically, is used to guide the legs of the self-elevating offshore platform;
[0039] Two stops 120 are set on the lifting frame 200 and located at the upper and lower ends of the guide plate 110, and are used to block the upper and lower ends of the guide plate 110.
[0040] The first pressure plate 130 is detachably connected to the lifting frame 200;
[0041] The second pressure plate 140 is disposed on the lifting frame 200. The first pressure plate 130 and the second pressure plate 140 are used to press and fix the guide plate 110 onto the lifting frame 200.
[0042] In other words, the guide plates 110 are arranged vertically, ensuring that they are as close as possible to the sides of the pile leg during vertical insertion and removal, minimizing gaps and thus ensuring the pile leg remains vertical, providing stable guiding support. Two stops 120 are located at the upper and lower ends of the guide plates to prevent vertical movement of the guide plates 110 during lifting, keeping the symmetrically arranged guide plates 110 on both sides of the pile leg in the same vertical position. The first pressure plate 130 and the second pressure plate 140 press and fix the guide plates 110 onto the lifting frame 200 from the other two sides, thus stably fixing the entire structure in a predetermined position, providing a robust structure and better guiding of the pile leg. The first pressure plate 130 is detachably connected to the lifting frame 200, making the guide plates 110 easy to replace, improving the service life and safety of the guiding device, and reducing maintenance costs.
[0043] In some embodiments, the first pressure plate 130 is located on one side of the guide plate 110, and the second pressure plate 140 is located on the other side of the guide plate 110. This makes operation more convenient and efficient.
[0044] In some embodiments, the guide plate 110 is made of a wear-resistant material. Because the guide plate 110 experiences frequent friction during the movement of the pile leg, the use of a wear-resistant material increases the service life of the guide plate 110.
[0045] In some embodiments, each guide component 100 further includes:
[0046] The pad 150 is fixed on the lifting frame 200 and is located between the two corresponding upper and lower stops 120.
[0047] The guide plate 110, the first pressure plate 130, and the second pressure plate 140 are all located on the pad 150.
[0048] In some embodiments, the stop block 120 is welded to the lifting frame 200, the pad 150 is welded to the lifting frame 200, the first pressure plate 130 is detachably connected to the pad 150 via fasteners 160, and the second pressure plate 140 is welded to the pad 150. This makes the structure more stable, and the second pressure plate 140 can also serve as a positioning reference for the installation of the guide plate 110.
[0049] For example, fastener 160 may be a bolt or screw that is easy to disassemble and suitable for high-strength connections. (Reference) Figure 3 , 4As shown, each first pressure plate 130 is provided with three fasteners 160, which are arranged sequentially at intervals along the vertical direction. Each fastener 160 includes a hex socket head cap screw and a washer. The hex socket head cap screw facilitates disassembly and reassembly, and the screw specifications and materials can be selected according to the intensity of the operation scenario of the self-elevating offshore platform lifting system and guiding device, so as to meet its load-bearing capacity.
[0050] In some embodiments, the pad 150 is parallel to the guide plate 110.
[0051] The pad 150 is welded to the lifting frame 200, and the fastener 160 passes through the pad 150 and is fixed to the lifting frame 200. The pad 150 enables the pressure of the pressing guide plate 110 to be evenly distributed, reducing local pressure and the risk of material damage. In addition, the pad 150 can compensate for the thickness of the guide plate 110, thereby reducing the weight of the guide plate 110.
[0052] In some embodiments, the guide plate 110 is provided with a first inclined surface 111 on both sides, the first pressure plate 130 is provided with a second inclined surface 131 that cooperates with the corresponding first inclined surface 111, and the second pressure plate 140 is provided with a third inclined surface (not shown in the figure) that cooperates with the corresponding first inclined surface 111. The second inclined surface 131 and the third inclined surface are used to press against their respective corresponding first inclined surfaces 111 to press and fix the guide plate 110.
[0053] The inclined structure makes the assembly structure simpler and more compact, and increases the area on which pressure is applied to the guide plate 110 within a limited space, reducing local stress concentration and helping to increase the service life of the guide plate 110.
[0054] Furthermore, the inclined structure converts the vertical pressure acting on the guide plate 110 into both vertical pressure and lateral clamping force, making the guide plate 110 more stable. The inclined structure also serves as a guide during the assembly and disassembly of the guide plate 110, helping the operator to more easily mate the guide plate 110 with the second pressure plate 140, preventing the guide plate 110 from tipping over, reducing errors during installation, and improving overall assembly efficiency.
[0055] In some embodiments, the guide plate 110 is provided with a plurality of lifting threaded holes 112. The plurality of lifting threaded holes 112 on the guide plate 110 are arranged in two sets that are symmetrically distributed vertically.
[0056] In other words, the lifting threaded holes 112 provide a hanging point for the replacement of the guide plate 110. When it is necessary to move or install the guide plate, the lifting tool can be connected to the lifting threaded holes 112 for convenient lifting and improved work efficiency. The symmetrical distribution of multiple lifting threaded holes 112 ensures that the guide plate 110 can be stably replaced during the lifting process.
[0057] According to an embodiment of this application, a lifting system is also provided for a self-elevating offshore platform, including a leg guide device, wherein the leg guide device is the aforementioned leg guide device.
[0058] According to an embodiment of this application, a self-elevating offshore platform is also provided, including the aforementioned lifting system. Other mechanisms of the self-elevating offshore platform can employ corresponding mechanisms from the prior art, which will not be elaborated upon here.
[0059] Based on the various embodiments of this application described above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.
[0060] The above descriptions are merely some embodiments of this application, used only to illustrate the technical solutions of this application, and not to limit it. It should be understood that those skilled in the art can make improvements or substitutions based on the above descriptions without departing from the inventive concept of this application, and all such improvements and substitutions should fall within the protection scope of this application. In this case, all details can be replaced with equivalent elements, and materials, shapes, and sizes can also be arbitrary.
Claims
1. A leg guide, comprising: A lifting system for a self-elevating offshore platform, the leg guiding device comprising two guide components symmetrically arranged on the lifting frame of the lifting system and located on both sides of the leg, each guide component comprising: A guide plate, installed vertically, is used to guide the legs of the self-elevating offshore platform. Two blocks are provided on the lifting frame and located at the upper and lower ends of the guide plate to block the upper and lower ends of the guide plate. The first pressure plate is detachably connected to the lifting frame; The second pressure plate is disposed on the lifting frame, and the first pressure plate and the second pressure plate are used to press and fix the guide plate on the lifting frame.
2. Spud leg guide as claimed in claim 1, characterized in that The first pressure plate is located on one side of the guide plate, and the second pressure plate is located on the other side of the guide plate.
3. Spud leg guide as claimed in claim 2, characterized in that Each of the guide components also includes: A pad is fixed on the lifting frame and located between the two corresponding upper and lower stops; The guide plate, the first pressure plate, and the second pressure plate are all located on the pad.
4. The pile leg guiding device according to claim 3, characterized in that, The stop block is welded to the lifting frame, the pad is welded to the lifting frame, the first pressure plate is detachably connected to the pad by fasteners, and the second pressure plate is welded to the pad.
5. Spud leg guide as claimed in claim 4, characterized in that The pad is parallel to the guide plate.
6. Spud leg guide as claimed in claim 2, characterized in that The guide plate has a first inclined surface on each side, the first pressure plate has a second inclined surface that cooperates with the first inclined surface, and the second pressure plate has a third inclined surface that cooperates with the first inclined surface. The second inclined surface and the third inclined surface are used to press against their respective first inclined surfaces to press and fix the guide plate.
7. Spud leg guide as claimed in claim 1, characterized in that The guide plate is made of wear-resistant material.
8. Spud leg guide as claimed in claim 1, characterized in that The guide plate is provided with multiple hoisting threaded holes; The multiple hoisting threaded holes on the guide plate are arranged in two sets that are symmetrically distributed vertically.
9. An elevator system characterized by For use in jack-up offshore platforms, including a leg guide device, wherein the leg guide device is the leg guide device as described in any one of claims 1 to 8.
10. A jack-up offshore platform, characterised in that, Includes the lifting system as described in claim 9.