Quick mounting and closing process for lifting system of self-elevating platform

Abstract

The invention provides a quick mounting and closing process for a lifting system of a self-elevating platform. The quick mounting and closing process comprises the following steps: horizontally hoisting a gear box of a lifting unit; the upper fixing frame provided with the lifting unit gear box is turned over, erected and outfitted; the upper pile fixing frame is integrally hoisted; completely installing a gear box of the lifting system; and hoisting the mounted upper pile fixing frame and the tie bar sections on the left side and the right side of the upper pile fixing frame, then sequentially hoisting a second set of upper pile fixing frame and the corresponding tie bar sections on the remaining side, finally hoisting a third set of upper pile fixing frame, and completing folding welding according to a welding process sequence. According to the process, repeated disassembly and assembly of a large number of scaffolds and high-altitude hoisting operation of fitting-out in the closure stage are avoided, the overall production efficiency is improved, the production period is greatly shortened, the operation safety is guaranteed, and the construction cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of marine engineering technology, and in particular to a rapid installation and closure process of a lifting system of a self-elevating platform. Background Art

[0002] The lifting units of a conventional jack-up platform or wind turbine installation vessel are installed one by one, from left to right and from bottom to top, after the pile frame is closed. Each lifting unit is inserted into the pile frame's hole group. During installation, the rotation angle of the lifting unit's gears must be adjusted individually to ensure smooth engagement with the racks on the pile legs. After all lifting units are installed, the pile frame structure and the outfitting platform surrounding the lifting gearboxes are completed. Finally, the cables for each lifting unit are paid out and the lifting units are debugged.

[0003] Currently, existing technology presents significant challenges in installing the lifting unit gearbox and outfitting platform after the berth's pile frame is closed. This requires the construction of a temporary scaffolding platform to facilitate the installation of the lifting unit. The subsequent installation of the pile frame outfitting platform interferes with the currently installed scaffolding, resulting in repeated scaffolding dismantling and erection. During the closing phase, the lifting units must be hoisted individually. This is difficult due to the high-altitude hoisting and construction requirements. Furthermore, the installation of the lifting units requires a certain torque requirement and the assembly of wedges between the torsion blocks, all of which contribute to a long equipment installation cycle. Because the pile frame is constructed horizontally, the staged horizontal outfitting can interfere with the turning lugs and locks, far from achieving complete outfitting. The post-closing outfitting platform installation process interferes with the scaffolding erection process for the lifting unit installation, resulting in repeated scaffolding dismantling and erection, significantly impacting the efficiency of the lifting unit installation and delaying the construction schedule. The extensive overlapping operations occurring in the closing area increase the difficulty of construction and technical management, often delaying the overall project progress. Summary of the Invention

[0004] The purpose of the present invention is to provide a rapid installation and closure process for the lifting system of a self-elevating platform, so as to solve the problem of delayed project progress due to cross-operation in the prior art.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a rapid installation and closure process of a jack-up platform lifting system, comprising the following steps:

[0006] Horizontal hoisting of the lifting unit gearbox on the upper pile frame;

[0007] Arrange the upper pile frame in a horizontal position on the plurality of support members, so that the axis of the reinforcement ring hole on the upper pile frame extends vertically and one of the openings faces upward;

[0008] Pre-treating the area that will come into contact with the lifting unit;

[0009] The gear box is passed through the reinforcement ring hole, the middle large bearing hole and the front end bearing hole in sequence with the gear shaft downward, and is installed in the installation position to temporarily fix the gear box;

[0010] Hoist the lifting unit and install it on the upper pile frame using temporary bolts;

[0011] The upper fixing frame on which the lifting unit and the gear box are installed is turned over and erected for outfitting:

[0012] Turn the upper pile frame on which the lifting unit and the gear box are installed 90 degrees as a whole, so that the upper pile frame is placed vertically on the tire position on the support surface, and fix the upper pile frame to the tire position, and connect and fix the upper fixing frame to the support surface;

[0013] Positioning and installing the prefabricated outfitting parts layer by layer starting from the bottom layer;

[0014] Release the temporary connection between the gear box and the upper pile frame, and formally install the gear box on the upper pile frame;

[0015] Overall hoisting of the upper pile frame;

[0016] After applying a load not exceeding 10% of the entire weight of the upper pile frame, releasing the bottom sealing weld of the upper pile frame and releasing the connection between the upper pile frame and the supporting surface;

[0017] The upper pile frame is hoisted as a whole and folded onto the lower pile frame on the slipway for precise positioning and sealing welding;

[0018] Hoisting of lifting system;

[0019] After the installation is completed, the upper pile frame and the tie bars on its left and right sides are hoisted, and then the second set of upper pile frames and the corresponding tie bars on the remaining side are hoisted in sequence. Finally, the third set of pile frames is hoisted, and the closing welding is completed according to the welding process sequence.

[0020] In one embodiment, when the upper fixing pile frame is erected on the fetal position, the verticality of the upper fixing pile frame is controlled to be within 10 mm by using a theodolite, a total station or a plumb line method;

[0021] The four corners of the bottom of the upper pile frame are sealed and welded to the tire position.

[0022] In one embodiment, in the step of connecting and fixing the upper fixing frame to the support surface, a connecting piece is used to connect the inclined lifting lugs on the upper pile fixing frame and the anchor points on the support surface.

[0023] In one embodiment, the upper pile fixing frame is provided with the oblique lifting lugs on opposite sides, and each of the oblique lifting lugs is connected to the anchor points on opposite sides of the upper pile fixing frame via a connecting piece;

[0024] The oblique lifting ears arranged on two opposite sides are arranged at intervals in the vertical direction.

[0025] In one embodiment, when the upper pile fixing frame is turned over, the lifting lug at the top of the upper pile fixing frame serves as a main hook, and the lifting lug at the bottom of the upper pile fixing frame serves as an auxiliary hook.

[0026] In one embodiment, in the step of hoisting the lifting unit and installing it on the upper pile frame using temporary bolts, the lifting units are installed one by one from the middle of the upper pile frame in the longitudinal direction to both ends;

[0027] A pair of wedges are arranged between the upper pile frame and the support member. The cross-section of the wedges is triangular and the pair of wedges can move relative to each other to adjust the height.

[0028] The pretreatment includes removing impurities, spraying paint, cleaning and applying grease, and the impurities include oil stains, iron filings and dust.

[0029] In one embodiment, when installing the outfitting, after the outfitting on each floor is installed, the inter-floor pillars and the vertical ladder are installed;

[0030] After all outfitting parts are positioned and installed, the weld areas are inspected, polished and painted.

[0031] In one embodiment, during the step of formally installing the gearbox on the upper pile frame, the installation of the spacers on the outer and inner sides of the gearbox, the gland plate, the stopper plate and the fastening bolts is completed.

[0032] In one embodiment, the steps for formally installing the gear box on the upper pile frame are as follows:

[0033] Process and install the pads at the bottom of the outer side of the gearbox as required;

[0034] Apply a load to the inner side of the gearbox so that the pad on the outside fits in with the anti-torsion block corresponding to the reduction gearbox. After applying the connection glue, install the gland plate and fasten the bolts.

[0035] A grinding pad is machined at the foot position on the inner side of the gear box and installed.

[0036] In one embodiment, after the accessories are installed, the positioning bolts of the lifting unit are installed to a specified torque and tightened, and it is ensured that the head end surface of the positioning bolt does not contact the anti-torsion block.

[0037] It can be seen from the above technical solutions that the present invention has at least the following advantages and positive effects:

[0038] The rapid installation and closing process of the lifting system of the self-elevating platform in the present invention utilizes the stage where the upper pile frame is lying flat on the support to complete the hoisting of the gearbox equipment into place, which is convenient, fast and efficient. Through a reasonable gearbox equipment installation method, the equipment installation is completed in the segmented stage, saving the time for installing the equipment after closing. This solves the problem of many cross-construction operations and long construction cycles in traditional self-elevating functional platforms or ships that outfitting and equipment installation can only be carried out after the upper pile frame is closed. It is a construction method with the characteristics of low cost, high quality and high efficiency. The upper pile frame with the gearbox is turned over 90 degrees to stand upright for outfitting, avoiding the interference problem between the hoisting and the upper pile frame outfitting platform when turning over during the flat outfitting, greatly improving the integrity of the outfitting. Equipment installation, outfitting, painting and other construction inspection work can be completed before closing, greatly reducing the construction workload of the subsequent process and improving the efficiency of slipway construction. After the gearbox and outfitting platform are installed on the pile frame and the overall hoisting and closure are completed, the hoisting of the remaining sections of the lifting system can be completed uninterruptedly, laying a good foundation for the rapid improvement and wiring debugging of the lifting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic flow chart of a rapid installation and closure process of a lifting system of a self-elevating platform according to one embodiment of the present invention.

[0040] Figure 2 It is a top view of the upper pile frame placed on the support member in the present invention.

[0041] Figure 3 It is a cross-sectional view of the upper pile frame placed on the support member in the present invention.

[0042] Figure 4 This is a side view of the gearbox installed on the upper pile frame in the present invention

[0043] Figure 5 It is a schematic diagram of multiple gear boxes installed on the upper pile frame in the present invention.

[0044] Figure 6 It is a schematic diagram of the gear box installed at a specified position of the upper pile frame in the present invention.

[0045] Figure 7 It is a schematic diagram of the upper fixed pile frame in the present invention turning over and standing upright.

[0046] Figure 8 It is a schematic diagram of the upper fixed pile frame in the present invention being turned over and standing upright and connected to the supporting surface.

[0047] Figure 9It is a schematic diagram of the upper fixing pile frame of the present invention after the outfitting parts are installed.

[0048] Figure 10 It is a schematic diagram of the prefabrication of the upper pile frame outfitting platform in the present invention.

[0049] Figure 11 It is a horizontal cross-sectional schematic diagram of the upper fixed pile frame standing outfitting in the present invention.

[0050] Figure 12 It is a schematic diagram of the mounting surface of the anti-torsion block of the gear box and the rear plate of the pile fixing frame in the present invention.

[0051] Figure 13 It is a schematic diagram showing one perspective of the installation position on the gear box in the present invention.

[0052] Figure 14 It is a schematic diagram of another perspective of the installation position on the gear box in the present invention.

[0053] Figure 15 It is a schematic diagram of the upper pile fixing frame and the lower pile fixing frame in the present invention being closed.

[0054] Figure 16 It is a schematic structural diagram of the three upper fixed pile frames and three tie bars in the present invention that are closed in sections.

[0055] Figure 17 It is a top view schematic diagram of the three upper fixed pile frames and three tie bars in the present invention being closed in sections.

[0056] The following are the descriptions of the reference numerals:

[0057] 11. Upper pile frame; 111. Reinforcement ring hole; 112. Middle large bearing hole; 113. Front end bearing hole; 114. Stop block; 115. Lifting lug; 12. Lower pile frame;

[0058] 21. Support; 22. Wedge; 23. Gearbox; 231. Gear shaft; 232. Torque wrench; 233. Climbing gear; 234. Anchor; 24. Positioning bolt; 25. Spacer; 26. Reducer anti-torsion block; 27. Pressure cover plate; 28. Fastening bolt; 29. ​​Limit bolt; 31. Tire position; 32. Inclined lifting eye; 33. Connector; 34. Anchor point; 35. Outfitting platform; 36. Handrail; 37. Interlayer pillar; 38. Ladder; 41. Column support; 42. Ladder; 43. Tie bar segment. DETAILED DESCRIPTION

[0059] Although the present invention is susceptible of being embodied in different forms, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification. It should be understood that this description should be regarded as an exemplary illustration of the principles of the invention and is not intended to limit the invention to that described herein.

[0060] Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, rather than to imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other, not explicitly described, combinations. Thus, unless otherwise noted, the described combinations are not intended to be limiting.

[0061] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and rear) used to explain the structure and movement of various components of the present invention are not absolute but relative. These descriptions are applicable when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components are changed, the directional indications will also change accordingly.

[0062] It should be noted that the gearbox equipment and outfitting platform are currently installed after the upper pile frame structure is closed. Due to the large amount of equipment and the inconvenience of hoisting, the construction is difficult and the operation cycle is long. Furthermore, the outfitting platform was not completed ahead of schedule, resulting in repeated dismantling and erection of scaffolding in the closure area. The intensive construction and overlapping operations of various disciplines in the lifting system and surrounding areas resulted in mutual constraints and interference, resulting in low construction efficiency. Furthermore, outfitting operations in the closure area require the rotation of outfitting parts, which is difficult to hoist and construct, poses numerous safety risks, and results in a long operation cycle and high construction costs.

[0063] Therefore, the inventors of this application have creatively developed a process for rapidly installing and closing the jacking system of a self-elevating platform. This involves first installing the gearbox of the jacking unit while the upper pile frame is in a horizontal position, then flipping it upright. The jacking unit is then outfitted in sections and the gearbox is formally installed. Finally, the entire jacking unit is hoisted together to achieve standardized assembly and closing of the pile frame, including the jacking unit and outfitting components. This installation process avoids the repeated assembly and disassembly of extensive scaffolding and the overhead hoisting required for outfitting during the closing phase, improving overall production efficiency, significantly reducing production cycles, ensuring operational safety, and reducing construction costs.

[0064] Figure 1 The schematic diagram shows the process flow of the rapid installation and closure process of the jack-up platform lifting system, see Figure 1 ,

[0065] The rapid installation and closure process of the jack-up platform's lifting system includes the following steps:

[0066] S1. Horizontal hoisting of the lifting unit gearbox on the upper pile frame.

[0067] S11 , placing the upper pile frame 11 in a horizontal position on the plurality of support members 21 , so that the axis of the reinforcement ring hole 111 on the upper pile frame 11 extends vertically and one of its openings faces upward.

[0068] Combine Figure 2 and Figure 3 The horizontal type of the upper pile frame 11 means that its axis extends in the horizontal direction. A plurality of support members 21 are arranged at intervals along the axis direction of the upper pile frame 11 to jointly support the upper pile frame 11.

[0069] When the upper pile frame 11 is placed horizontally, the axis of the reinforcement ring hole 111 extends vertically, and one of the openings faces upward and is located at the top.

[0070] When the upper pile frame 11 is placed horizontally, the axis of the middle large bearing hole 112 extends vertically, and the axis of the front end bearing hole 113 extends vertically. The reinforcing ring hole 111, the middle large bearing hole 112 and the front end bearing hole 113 are connected.

[0071] Furthermore, pairs of wedges 22 are arranged between the upper pile frame 11 and the support member 21. The cross section of the wedges 22 is triangular, and the paired wedges 22 can move relative to each other to adjust the height.

[0072] S12. Pre-treating the area that will come into contact with the lifting unit.

[0073] Pretreatment includes removing impurities, spraying paint, cleaning and applying grease. Impurities include oil stains, iron filings and dust.

[0074] The area in contact with the lifting unit includes the middle large bearing hole 112, the front end bearing hole 113 and the processing surface of the stop block 114.

[0075] The upper pile frame 11 is sprayed with paint according to a painting process.

[0076] S13, pass the gear box 23 through the reinforcing ring hole 111, the middle large bearing hole 112 and the front end bearing hole 113 in sequence with the gear shaft 231 facing downward, and install it to the installation position to temporarily fix the gear box 23.

[0077] Specifically, the gear box 23 is lifted with the gear shaft 231 facing downward, and is slowly lowered so that the gear box 23 passes through the reinforcement ring hole 111 , the middle large bearing hole 112 and the front end bearing hole 113 in sequence.

[0078] After the plurality of gear boxes 23 are installed on the upper pile frame 11, Figure 4 、 Figure 5 and Figure 6 At this time, the gear shaft 231 is located at the bottom, the climbing gear 233 is located above the gear shaft 231, and the torque wrench 232 is located on one side.

[0079] A method for temporarily fixing the gearbox 23 is to temporarily tighten and fix the gearbox 23 using the reduction gearbox positioning bolts 24 .

[0080] S14, hoist the lifting unit and install it on the upper pile frame 11 using temporary bolts.

[0081] Specifically, when hoisting the lifting units, the lifting units are installed one by one from the middle portion of the upper pile frame 11 in the longitudinal direction to both ends.

[0082] S2. The upper fixed frame on which the lifting unit and the gear box 23 are installed is turned over and erected for outfitting.

[0083] S21, turn the upper pile frame 11 equipped with the lifting unit and the gear box 23 over 90 degrees as a whole, so that the upper pile frame 11 is set in a vertical state on the tire position 31 located on the support surface, and fix the upper pile frame 11 and the tire position 31, and connect and fix the upper fixing frame and the support surface.

[0084] After the gear box 23 of the entire upper pile fixing frame 11 is installed, the upper pile fixing frame 11 is turned over from a horizontal state to a vertical state.

[0085] Specifically, when the upper pile frame 11 is turned over, the lifting lug 115 at the top of the upper pile frame 11 serves as a main hook, and the lifting lug 115 at the bottom of the upper pile frame 11 serves as an auxiliary hook. The upper pile frame 11, the lifting unit mounted on the upper pile frame 11, and the gear box 23 are hoisted upward as a whole, and then turned over so that the upper pile frame 11 extends vertically.

[0086] In this embodiment, the support surface is the ground, and the tire position 31 is a steel plate tire position 31 .

[0087] The upper pile frame 11 flipped 90° is placed on the fetal position 31 , and the verticality of the upper pile frame 11 is detected and adjusted.

[0088] Specifically, when the upper pile frame 11 is erected on the fetal position 31 , a theodolite, a total station or a plumb line method is used to control the verticality of the upper pile frame 11 to be within 10 mm.

[0089] After the accuracy meets the requirements, the four corners of the bottom of the upper pile frame 11 are sealed and fixed with the tire position 31. Figure 7 shown.

[0090] In the step of connecting and fixing the upper fixing frame to the support surface, the connecting piece 33 is used to connect the inclined lug 32 on the upper pile fixing frame 11 and the anchor point 34 on the support surface. Figure 8 shown.

[0091] Specifically, the support surface is provided with multiple anchor points 34. The upper pile frame 11 is provided with inclined lifting lugs 32 on opposite sides. Each inclined lifting lug 32 is connected to an anchor point 34 on opposite sides of the upper pile frame 11 via a connector 33. For example, the upper pile frame 11 is provided with inclined lifting lugs 32 on both the left and right sides. The left inclined lifting lug 32 is connected to the anchor point 34 on the left side of the upper pile frame 11, while the right inclined lifting lug 32 is connected to the anchor point 34 on the right side of the upper pile frame 11. This connection between the left and right sides maintains the upper pile frame 11 in an upright position.

[0092] Furthermore, the oblique lifting ears 32 arranged on two opposite sides are spaced apart in the vertical direction.

[0093] In this embodiment, the connecting member 33 is a steel wire rope.

[0094] It should be noted that the connection between the upper pile frame 11 and the fetal position 31 and the connection between the upper pile frame 11 and the support surface can be carried out simultaneously.

[0095] S22. Position and install the prefabricated outfitting parts layer by layer starting from the bottom layer.

[0096] After all the outfitting parts are positioned and installed, Figure 9 and Figure 11 shown.

[0097] See Figure 10 , the outfitting platform 35, railing 36, etc. are divided into several assemblies according to regions in advance, and are prefabricated separately to obtain prefabricated outfitting parts.

[0098] When installing outfitting, after the outfitting of each layer is installed, the inter-layer pillars 37 and the straight ladder 38 are installed.

[0099] After all outfitting parts are positioned and installed, the weld areas are inspected, polished and painted.

[0100] S23 , releasing the temporary connection between the gear box 23 and the upper pile frame 11 , and formally installing the gear box 23 on the upper pile frame 11 .

[0101] During the formal installation of the gearbox 23 on the upper pile frame 11, the outer and inner pads 25, the gland plate 27, the stopper plate, and the fastening bolts 28 are installed. The gearbox 23 has pads 25 on both the top and bottom of the outer side, and pads 25 on both the top and bottom of the inner side.

[0102] Specifically, the steps for formally installing the gear box 23 on the upper pile frame 11 are as follows:

[0103] S231 , process and install the pad 25 at the foot 234 position on the outer bottom of the gear box 23 as required.

[0104] See Figure 12 , and it is processed and installed according to the requirements of the theoretical drawings.

[0105] S232. Apply a load to the inner side of the gear box 23 to make the pad 25 on the outer side fit with the reduction box anti-torsion block 26. After applying the connection glue, install the pressure cover plate 27 and the fastening bolts 28.

[0106] For details, please refer to Figure 13 and Figure 14 .

[0107] S233 , machining the grinding pad 25 at the foot 234 position inside the gear box 23 and installing it.

[0108] Steps S231 - S233 illustrate the installation of the spacers 25 on the inner and outer sides of the bottom of the gear box 23 .

[0109] Repeat steps S231 - S233 to complete the installation of the pads 25 on the inner and outer sides of the top of the gear box 23 .

[0110] After the accessories are installed, install and tighten the limiting bolt 29 of the lifting unit to the specified torque, and ensure that the head end face of the limiting bolt 29 does not contact the anti-torsion block.

[0111] Furthermore, step S22 and step S23 are performed alternately.

[0112] S3, overall hoisting of the upper pile frame 11.

[0113] S31 , after applying a load not exceeding 10% of the entire weight to the upper pile frame 11 , release the bottom sealing weld of the upper pile frame 11 and release the connection between the upper pile frame 11 and the supporting surface.

[0114] After the erection and outfitting of the upper pile frame 11 is completed and the lower pile frame 12 has been completely closed on the slipway, the overall hoisting of the upper pile frame 11 is started.

[0115] First, use a crane and slings to hang the lifting lug 115 on the top of the upper pile frame 11, then slowly apply a load that does not exceed 10% of the entire weight, cut off the bottom sealing weld of the upper pile frame 11, and remove the connector 33 of the upper pile frame 11.

[0116] S32, hoist the upper pile frame 11 as a whole, and fold it onto the lower pile frame 12 located on the slipway, and perform precise positioning and sealing welding.

[0117] The upper pile frame 11 and the lower pile frame 12 after closing are as shown in FIG. Figure 15 shown.

[0118] S4. Hoisting of lifting system.

[0119] S41, hoisting the installed upper pile frame 11 and the tie bar segments 43 on its left and right sides, then hoisting the second upper pile frame 11 and the corresponding remaining side tie bar segments 43 in sequence, and finally hoisting the third upper pile frame 11, and completing the closing welding according to the welding process sequence.

[0120] Furthermore, after a set of upper pile fixing frames 11 are folded together with the outfitting as a whole, the column support 41 and the ladder 42 between the outfitting platform 35 of the upper pile fixing frame 11 and the main deck of the hull are improved.

[0121] The plurality of upper pile frames 11 are defined as a first upper pile frame 11, a second upper pile frame 11 and a third upper pile frame. Each set of upper pile frames 11 includes an upper pile frame 11 and a lifting unit, a gear box 23 and outfitting parts installed on the upper pile frame 11.

[0122] After the first set of upper pile frame 11 is hoisted, closed and welded, the left and right sets of tie bar segments 43 are hoisted in sequence. Then the second upper pile frame 11 and its adjacent tie bar segments 43 are hoisted in sequence, and finally the third upper pile frame 11 is hoisted in sequence.

[0123] According to the specified welding process sequence, the three upper pile frames 11 and the three tie rod segments 43 of the single lifting system are welded together, such as Figure 16 and Figure 17 shown.

[0124] S42, carry out pile leg insertion and debugging work.

[0125] In combination with the above introduction, the rapid installation and closure process of the jack-up platform lifting system in the present invention has the following advantages:

[0126] 1. The gearbox 23 is hoisted into place while the upper pile frame 11 is lying flat on the support 21, which is convenient, fast, and efficient. This rational installation method for the gearbox 23 allows for equipment installation to be completed in sections, saving time for post-closing equipment installation. This solves the problem of traditional self-elevating platforms or vessels requiring outfitting and equipment installation only after the upper pile frame 11 is closed, requiring multiple overlapping operations and a long construction period. This method offers low cost, high quality, and high efficiency.

[0127] 2. The upper pile frame 11 with the gear box 23 is turned over 90 degrees to stand upright for outfitting, avoiding the interference between the hoisting and the outfitting platform 35 of the upper pile frame 11 when turning over the outfitting, greatly improving the integrity of the outfitting.

[0128] 3. Equipment installation, outfitting, painting and other construction inspection work can be completed before closure, which greatly reduces the construction workload of subsequent processes and improves the efficiency of slipway construction.

[0129] 4. After the gear box 23 and outfitting platform 35 are installed on the pile frame 11 and the entire system is hoisted and closed, the hoisting of the remaining sections of the lifting system can be completed uninterruptedly, laying a good foundation for the improvement and wiring debugging of the lifting system as soon as possible.

[0130] In summary, this installation process solves the problems of high-altitude work, on-site welding, and the difficulty and long construction period. It replaces the cumbersome methods of traditional processes, significantly shortens the construction period, and reduces construction costs. The application of this new installation process can quickly achieve balanced production in all processes of the lifting system, significantly improve construction efficiency, reduce costs, and provide many advantages such as safety and reliability.

[0131] For example, the rapid installation and closure process of the jack-up platform's lifting system in the present invention can be applied to the rapid installation and closure of China Railway Construction's 2,000-ton jack-up wind power installation vessel.

[0132] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are intended to be illustrative and exemplary rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. All changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A rapid installation and closing process for a lifting system of a self-elevating platform, characterized in that: The following steps are involved: The gearbox of the lifting unit is hoisted horizontally on the upper pile frame; Arrange the upper pile fixing frame in a horizontal state on a plurality of support members, so that the axis of the reinforcing ring hole on the upper pile fixing frame extends vertically and one of the openings faces upward; pre-treating the area that will come into contact with the lifting unit; The gear box is passed through the reinforcing ring hole, the middle large bearing hole and the front end bearing hole in sequence in a manner that the gear shaft is downward, and is installed in the installation position to temporarily fix the gear box; Hoisting the lifting unit and installing it on the upper pile frame using temporary bolts; The upper fixed frame on which the lifting unit and the gear box are installed is turned over and erected for outfitting: Turning the upper pile frame on which the lifting unit and the gear box are installed as a whole by 90°, so that the upper pile frame is set in a vertical state on the tire position located on the support surface, fixing the upper pile frame and the tire position, and connecting and fixing the upper fixing frame and the support surface; Positioning and installing the prefabricated outfitting parts layer by layer starting from the bottom layer; Release the temporary connection between the gear box and the upper pile frame, and formally install the gear box on the upper pile frame; Integral hoisting of the upper pile frame; After applying a load not exceeding 10% of the entire weight to the upper pile frame, releasing the bottom sealing weld of the upper pile frame, and releasing the connection between the upper pile frame and the supporting surface; The upper pile frame is hoisted as a whole and folded onto the lower pile frame on the slipway for precise positioning and sealing welding; Hoisting of lifting system; After the installation is completed, the upper pile frame and the tie rod segments on the left and right sides are hoisted, and then the second set of upper pile frames and the corresponding remaining side tie rod segments are hoisted in turn, and finally the third set of pile frames are hoisted, and the closing welding is completed according to the welding process sequence.

2. The installation process of the self-elevating platform according to claim 1, characterized in that: When the upper pile frame is erected on the fetal position, a theodolite, a total station or a plumb line method is used to control the verticality of the upper pile frame to be within 10 mm; The four corners of the bottom of the upper pile fixing frame are fixed to the tire position by sealing welding.

3. The installation process of the self-elevating platform according to claim 1, characterized in that: In the step of connecting and fixing the upper fixing frame and the supporting surface, a connecting piece is used to connect the inclined lifting lugs on the upper pile fixing frame and the anchor points on the supporting surface.

4. The installation process of the self-elevating platform according to claim 3, characterized in that: The upper pile fixing frame is provided with the oblique lifting lugs on opposite sides, and each of the oblique lifting lugs is connected to the anchor points on opposite sides of the upper pile fixing frame through a connecting piece; The oblique suspension ears arranged on two opposite sides are arranged at intervals in the vertical direction.

5. The installation process of the self-elevating platform according to claim 1, characterized in that: When the upper pile fixing frame is turned over, the lifting lug at the top of the upper pile fixing frame is used as the main hook, and the lifting lug at the bottom of the upper pile fixing frame is used as the auxiliary hook.

6. The installation process of the self-elevating platform according to claim 1, characterized in that: In the step of hoisting the lifting unit and installing it on the upper pile fixing frame with temporary bolts, the lifting units are installed one by one from the middle of the upper pile fixing frame in the length direction to both ends; A pair of wedges are arranged between the upper pile frame and the support member, the cross section of the wedges is triangular, and the pair of wedges can move relative to each other to adjust the height; The pretreatment includes removing impurities, spraying paint, cleaning and applying grease, and the impurities include oil stains, iron filings and dust.

7. The installation process of the self-elevating platform according to claim 1, characterized in that: When installing the outfitting, after the outfitting on each floor is installed, the inter-floor pillars and the straight ladder are installed; After all outfitting parts are positioned and installed, the weld areas are inspected, polished and painted.

8. The installation process of the self-elevating platform according to claim 1, characterized in that: In the step of formally installing the gear box on the upper pile frame, the installation of the pads on the outer and inner sides of the gear box, the gland plate, the stop plate and the fastening bolts is completed.

9. The installation process of the self-elevating platform according to claim 8, characterized in that: The steps for formally installing the gear box on the upper pile frame are as follows: Process and install the pads at the foot position of the bottom of the outer side of the gear box according to requirements; Apply a load to the inner side of the gearbox so that the pad located on the outer side fits with the anti-torsion block corresponding to the reduction box, apply the connection glue, and then install the gland plate and fastening bolts; A grinding pad is processed at the foot position on the inner side of the gear box and installed.

10. The installation process of the self-elevating platform according to claim 8, characterized in that: After the accessories are installed, the positioning bolts of the lifting unit are installed to a specified torque and tightened, and it is ensured that the head end surface of the positioning bolt does not contact the anti-torsion block.

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