PCTC ship stand column hoisting method

Abstract

The invention relates to the technical field of ships, and discloses a PCTC ship stand column hoisting method which comprises the steps that S11, two hoisting structures are symmetrically installed at the top of a stand column, each hoisting structure comprises a pipe section and a sealing plate, each sealing plate is connected with the stand column through the corresponding pipe section, and the projection of each sealing plate in the length direction of the corresponding pipe section covers the corresponding pipe section. And S12, one end of the lifting rope is connected with a lifting hook of the hoisting equipment, two annular buckles are formed at the other end of the lifting rope, the annular buckles are connected with a cable rope, and the cable rope extends to the bottom of the stand column. And S21, the annular buckle penetrates through the sealing plate to be arranged on the pipe section in a sleeving mode, the lifting hook rises, and the annular buckle is converted into a tensioned state from a loose state. And S22, the lifting hook continues to rise, and the stand column is converted into a vertical state from a horizontal state until the stand column is lifted to a preset position and fixed. And S23, the lifting hook moves downwards, the annular buckle is converted into a loose state from a tensioned state, the cable rope is pulled to enable the annular buckle to be separated from the lifting structure, the lifting rope does not need to be removed from the top of the stand column, time and labor are saved, and the lifting efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a PCTC ship column hoisting method. Background Art

[0002] There are many columns in PCTC ships, and the column specifications (height) are not uniform, and the height range is generally between 2m and 7m. The traditional column lifting method usually uses a lifting horse and a hook for lifting. However, the existing lifting method requires welding a lifting horse on the top of the column. After the lifting is completed, the lifting horse is in the air. When unhooking, the staff needs to climb up with the help of tools to manually remove the hook. The whole lifting process is laborious and there are potential safety hazards. In addition, due to the installation position of the lifting horse, the lifting horse is easy to damage the column (groove) during installation and removal, and the lifting horse after cutting cannot be reused, and the lifting cost is high.

[0003] Therefore, a PCTC ship column hoisting method is urgently needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a PCTC ship column hoisting method, which can solve the problems in the prior art that column hoisting is time-consuming, labor-intensive, risky and costly, and improve the column hoisting efficiency.

[0005] As conceived above, the technical solution adopted by the present invention is:

[0006] A method for hoisting a PCTC ship column is provided, comprising the following steps:

[0007] S1. Lifting preparation, including the following steps:

[0008] S11. Two lifting structures are symmetrically installed on the top of the column, wherein the lifting structures include a pipe segment and a sealing plate, wherein the sealing plate is connected to the column through the pipe segment, and the projection of the sealing plate in the length direction of the pipe segment covers the pipe segment;

[0009] S12, connecting one end of the lifting rope to the hook of the lifting equipment, forming two ring buckles at the other end of the lifting rope, connecting the wind rope to the ring buckle, and extending the wind rope to the bottom of the column;

[0010] S2, lifting, including the following steps:

[0011] S21, passing the annular buckle through the sealing plate and putting it on the pipe section, the hook is raised, and the annular buckle is changed from a relaxed state to a tensioned state;

[0012] S22, the hook continues to rise, and the column will change from a horizontal state to a vertical state until the column is lifted to a predetermined position and fixed;

[0013] S23, the hook moves downward, the annular buckle changes from a tensioned state to a relaxed state, and the guy rope is pulled to separate the annular buckle from the lifting structure.

[0014] Optionally, the guy rope is tied 500mm-800mm vertically upward from the lowest point of the annular buckle.

[0015] Optionally, the pipe section is a cylindrical structure, and the diameter of the pipe section is D, where D≥100 mm.

[0016] Optionally, the hoisting structure is connected to the column by welding.

[0017] Optionally, the pipe section is connected to the sealing plate by welding; or,

[0018] The pipe section is detachably connected to the sealing plate.

[0019] Optionally, the lifting structure further comprises a bearing, the bearing is sleeved on the outer circumference of the pipe section, and the annular buckle can be sleeved on the bearing.

[0020] Optionally, the lifting structure also includes a fixed plate, which is connected to one end of the pipe segment away from the sealing plate, the projection of the fixed plate in the length direction of the pipe segment covers the pipe segment, the fixed plate is connected to the column, and the bearing is clamped between the fixed plate and the sealing plate.

[0021] Optionally, the fixing plate is connected to the pipe section by welding; or,

[0022] The fixing plate is detachably connected to the pipe section.

[0023] Optionally, the hoisting structure further includes an elastic retaining ring, which is clamped on the pipe section and located on a side of the bearing close to the column.

[0024] Optionally, a hanging horse is arranged at the bottom of the column, and a line connecting a center point of the hanging horse and center points of the two hanging structures forms an isosceles triangle.

[0025] The beneficial effects of the present invention are:

[0026] The PCTC ship column hoisting method proposed in the present invention includes the following steps: S1, hoisting preparation and S2, hoisting. Among them, S11, two hoisting structures are symmetrically installed on the top of the column, and the hoisting structure includes a pipe section and a sealing plate. The sealing plate is connected to the column through the pipe section, and the projection of the sealing plate in the length direction of the pipe section covers the pipe section. S12, one end of the lifting rope is connected to the hook of the lifting equipment, and the other end of the lifting rope forms two ring buckles, and the ring buckles are connected to the cable wind rope, and the cable wind rope extends to the bottom of the column. The hoisting includes the following steps: S21, the ring buckle is passed through the sealing plate and put on the pipe section, the hook is raised, and the ring buckle is changed from a relaxed state to a tensioned state; S22, the hook continues to rise, and the column is changed from a horizontal state to a vertical state, until the column is lifted to a predetermined position and fixed; S23, the hook moves down, the ring buckle is changed from a tensioned state to a relaxed state, and the cable wind rope is pulled to make the ring buckle detach from the hoisting structure. The column is lifted by putting the annular buckle of the lifting rope on the lifting structure at the top of the column. After the lifting is completed, the staff on the ground can pull the cable wind rope, and use the cable wind rope to drive the lifting rope in a relaxed state to pass through the sealing plate and detach from the lifting structure. Because the projection of the sealing plate in the length direction of the pipe section covers the pipe section, before lifting, that is, when the column is placed horizontally on the ground, the staff can pass the annular buckle through the sealing plate and put it on the pipe section. Then, during the lifting process, the sealing plate can prevent the annular buckle from detaching from the pipe section. The PCTC ship column lifting method proposed by the present invention does not require the staff to go to the top of the column to remove the lifting rope, which saves more time and manpower and can improve the lifting efficiency of the column. After the lifting is completed, the cut lifting structure can be reused on other columns to save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a column hoisting flow chart provided by an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the column hoisting state provided by an embodiment of the present invention;

[0029] Figure 3 It is a partial assembly diagram of a hoisting structure and a column provided by an embodiment of the present invention;

[0030] Figure 4 It is a partial assembly diagram of another lifting structure and a column provided in an embodiment of the present invention.

[0031] In the figure:

[0032] 100, column; 200, lifting rope; 201, ring buckle; 300, guy rope; 400, lifting horse;

[0033] 1. Lifting structure; 11. Pipe section; 12. Closing plate; 13. Bearing; 14. Fixing plate; 15. Circlip. DETAILED DESCRIPTION

[0034] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0039] like Figure 1 and Figure 2As shown, this embodiment provides a method for lifting a column of a PCTC ship, comprising the following steps: S1, lifting preparation and S2, lifting. Among them, the lifting preparation includes S11, lifting point preparation and S12, lifting rope 200 preparation. The lifting point preparation is to symmetrically install two lifting structures 1 on the top of the column 100, and the lifting structure 1 includes a pipe section 11 and a sealing plate 12. The sealing plate 12 is connected to the column 100 through the pipe section 11, and the projection of the sealing plate 12 in the length direction of the pipe section 11 covers the pipe section 11. The lifting rope 200 preparation is to connect one end of the lifting rope 200 to the hook of the lifting equipment, and form two ring buckles 201 at the other end of the lifting rope 200. The ring buckle 201 is connected to the cable rope 300, and the cable rope 300 extends to the bottom of the column 100. The lifting includes the following steps: S21, the ring buckle 201 is passed through the sealing plate 12 and put on the pipe section 11, the hook is raised, and the ring buckle 201 is changed from a relaxed state to a tensioned state;

[0040] S22, the hook continues to rise, and the column 100 changes from a horizontal state to a vertical state, until the column 100 is lifted to a predetermined position and fixed; S23, the hook moves downward, and the ring buckle 201 changes from a tensioned state to a relaxed state, and the cable wind rope 300 is pulled to separate the ring buckle 201 from the lifting structure 1. In this embodiment, the column 100 is lifted by putting the ring buckle 201 of the lifting rope 200 on the lifting structure 1 located at the top of the column 100, and after the lifting is completed, the staff can pull the cable wind rope 300 on the ground, and use the cable wind rope 300 to drive the lifting rope 200 in a relaxed state to pass through the sealing plate 12 and separate from the lifting structure 1. Because the projection of the sealing plate 12 in the length direction of the pipe section 11 covers the pipe section 11, before lifting, that is, when the column 100 is placed horizontally on the ground, the staff can pass the ring buckle 201 through the sealing plate 12 and put it on the pipe section 11, so that during the lifting process, the sealing plate 12 can prevent the ring buckle 201 from being separated from the pipe section 11. The PCTC ship column lifting method provided in this embodiment does not require the staff to remove the lifting rope 200 at the top of the column 100, which saves more time and manpower and can improve the lifting efficiency of the column 100. When the lifting structure 1 provided in this embodiment only includes the pipe section 11 and the closing plate 12, the pipe section 11 is connected to the column 100. When the lifting structure 1 is cut off, that is, the connection between the pipe section 11 and the column 100 is cut off, the length of the pipe section 11 may be slightly shortened. Next time the pipe section 11 is connected to the column 100, the distance between the closing plate 12 and the column 100 is sufficient to accommodate the annular buckle 201 of the lifting rope 200. Therefore, the lifting structure 1 can be reused on other columns 100 after being cut off after one lifting is completed, saving costs.

[0041] During specific implementation, the length of the guy rope 300 is determined according to the height of the hoisted column 100 to ensure that one end of the guy rope 300 is connected to the ring buckle 201, and the other end of the guy rope 300 can extend to the bottom of the column 100. The guy rope 300 is tied to the lowest point of the ring buckle 201 vertically 500mm-800mm upward.

[0042] In specific implementation, the pipe section 11 is a cylindrical structure to reduce the wear of the pipe section 11 on the lifting rope 200, and the diameter of the pipe section 11 is determined according to the provisions of the column 100. Preferably, the diameter of the pipe section 11 is D, D ≥ 100mm, to ensure the safety of lifting.

[0043] During specific implementation, in order to facilitate the connection between the lifting structure 1 and the column 100 and ensure the connection strength between the lifting structure 1 and the column 100, the lifting structure 1 and the column 100 are welded together, that is, when the lifting structure 1 only includes the pipe section 11 and the sealing plate 12, the first end of the pipe section 11 can be welded together with the column 100, and the second end of the pipe section 11 can be welded together with the sealing plate 12. The structure is simple and the operation is convenient.

[0044] In other embodiments, the hoisting structure 1 is welded to the column 100, and the first end of the pipe section 11 can also be welded to the column 100, while the second end of the pipe section 11 can be detachably connected to the sealing plate 12. In specific implementation, a first mounting hole can be provided on the sealing plate 12, the inner circle of the first mounting hole is provided with a first internal thread, the second end is provided with a first external thread, and the sealing plate 12 is sleeved on the second end and threadedly connected to the pipe section 11. When dismantling the hoisting structure 1, the sealing plate 12 can also be removed from the pipe section 11 first, and then the connection between the pipe section 11 and the column 100 can be cut to avoid the sealing plate 12 affecting the cutting operation.

[0045] Furthermore, if Figure 3 As shown, the hoisting structure 1 provided in this embodiment further includes a bearing 13, which is sleeved on the outer periphery of the pipe section 11, and the annular buckle 201 can be sleeved on the bearing 13. By sleeved the bearing 13 on the pipe section 11, friction damage to the lifting rope 200 caused by the pipe section 11 can be avoided during the lifting process, thereby increasing the service life of the lifting rope 200.

[0046] Optionally, the hoisting structure 1 further includes a fixing plate 14, the fixing plate 14 is connected to the first end, the fixing plate 14 is connected to the column 100, the projection of the fixing plate 14 in the length direction of the pipe section 11 covers the pipe section 11, and the bearing 13 is sandwiched between the fixing plate 14 and the sealing plate 12. The fixing plate 14 and the sealing plate 12 cooperate to limit the bearing 13 in the length direction of the pipe section 11, so as to prevent the bearing 13 from moving in the length direction of the pipe section 11. When the hoisting structure 1 provided in this embodiment further includes the fixing plate 14, the fixing plate 14 has a certain thickness, and the fixing plate 14 is connected to the column 100. When the hoisting structure 1 is cut off, that is, the connection between the fixing plate 14 and the column 100 is cut off, the thickness of the fixing plate 14 may be slightly reduced, but the fixing plate 14 can still be connected to the column 100. Even if the fixing plate 14 no longer meets the welding requirements after repeated use, the fixing plate 14 can be removed, and only the pipe section 11 and the sealing plate 12 are retained.

[0047] In specific implementation, the first end of the pipe section 11 can be welded to the fixing plate 14 to form an integral structure of the fixing plate 14, the pipe section 11, the bearing 13 and the sealing plate 12, and then the fixing plate 14 is welded to the column 100. When the entire lifting structure 1 is removed from the column 100, the connection between the fixing plate 14 and the column 100 can be cut, and after the cutting is completed, the bearing 13 will not be separated from the pipe section 11, and there is no need to assemble the bearing 13 each time.

[0048] In specific implementation, the fixing plate 14 and the column 100 may be welded first, and then the bearing 13 may be sleeved on the pipe section 11, and the pipe section 11 and the fixing plate 14 may be detachably connected. That is, a second mounting hole may be provided on the sealing plate 12, the inner circle of the second mounting hole may be provided with a second internal thread, the first end may be provided with a second external thread, the first end may be passed through the second mounting hole and threadedly connected with the fixing plate 14. When dismantling the hoisting structure 1, the pipe section 11 may be removed from the fixing plate 14 first, and then the connection between the fixing plate 14 and the column 100 may be cut.

[0049] Furthermore, if Figure 4 As shown, this embodiment also provides another lifting structure 1, which further includes a bearing 13 and an elastic retaining ring 15. The elastic retaining ring 15 is clamped on the pipe section 11 and is located on the side of the bearing 13 close to the column 100. The elastic retaining ring 15 has the same function as the fixing plate 14, and can also limit the movement of the bearing 13 in the length direction of the pipe section 11. The setting position of the elastic retaining ring 15 can be adjusted according to the size specifications of the bearing 13, which is more flexible.

[0050] In addition, the PCTC ship column hoisting method provided in this embodiment can also set a hoisting horse 400 at the bottom of the column 100, and the connection between the center point of the hoisting horse 400 and the center points of the two hoisting structures 1 forms an isosceles triangle. When the column 100 is horizontally moved, the three lifting points of the two hoisting structures 1 and the hoisting horse 400 can be connected by a hook to ensure that the column 100 moves smoothly during hoisting.

[0051] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. PCTC ship column hoisting method, characterized in that: The steps include: S1. Lifting preparation includes the following steps: S11. Two hanging structures (1) are symmetrically installed on the top of the column (100), wherein the hanging structures (1) include a pipe section (11) and a sealing plate (12), wherein the sealing plate (12) is connected to the column (100) through the pipe section (11), and the projection of the sealing plate (12) in the length direction of the pipe section (11) covers the pipe section (11); S12, connecting one end of the lifting rope (200) to the hook of the lifting equipment, forming two ring buckles (201) at the other end of the lifting rope (200), connecting the wind rope (300) to the ring buckles (201), and extending the wind rope (300) to the bottom of the column (100); S2, lifting, including the following steps: S21, passing the annular buckle (201) through the sealing plate (12) and sleeved onto the pipe section (11), the hook is raised, and the annular buckle (201) is changed from a relaxed state to a tensioned state; S22, the hook continues to rise, and the column (100) changes from a horizontal state to a vertical state, until the column (100) is lifted to a predetermined position and fixed; S23, the hook moves downward, the annular buckle (201) changes from a tensioned state to a relaxed state, and the guy rope (300) is pulled to detach the annular buckle (201) from the lifting structure (1).

2. The PCTC ship column hoisting method according to claim 1, characterized in that: The guy rope (300) is tied at a position 500mm-800mm vertically upward from the lowest point of the annular buckle (201).

3. The PCTC ship column hoisting method according to claim 1, characterized in that: The pipe section (11) is a cylindrical structure, and the diameter of the pipe section (11) is D, where D is ≥ 100 mm.

4. The PCTC ship column hoisting method according to claim 1, characterized in that: The hoisting structure (1) is connected to the column (100) by welding.

5. The PCTC ship column hoisting method according to claim 1, characterized in that: The pipe section (11) is connected to the sealing plate (12) by welding; or, The pipe section (11) is detachably connected to the sealing plate (12).

6. The PCTC ship column hoisting method according to claim 1, characterized in that: The hoisting structure (1) further comprises a bearing (13), wherein the bearing (13) is sleeved on the outer circumference of the pipe section (11), and the annular buckle (201) can be sleeved on the bearing (13).

7. The PCTC ship column hoisting method according to claim 6, characterized in that: The hoisting structure (1) also includes a fixing plate (14), the fixing plate (14) being connected to one end of the pipe section (11) facing away from the sealing plate (12), the projection of the fixing plate (14) in the length direction of the pipe section (11) covering the pipe section (11), the fixing plate (14) being connected to the column (100), and the bearing (13) being clamped between the fixing plate (14) and the sealing plate (12).

8. The PCTC ship column hoisting method according to claim 7, characterized in that: The fixing plate (14) is connected to the pipe section (11) by welding; or, The fixing plate (14) is detachably connected to the pipe section (11).

9. The PCTC ship column hoisting method according to claim 6, characterized in that: The hoisting structure (1) further comprises an elastic retaining ring (15), wherein the elastic retaining ring (15) is clamped on the pipe section (11) and is located on a side of the bearing (13) close to the column (100).

10. The PCTC ship column hoisting method according to claim 1, characterized in that: A hanging horse (400) is arranged at the bottom of the column (100), and the line connecting the center point of the hanging horse (400) and the center points of the two hanging structures (1) forms an isosceles triangle.

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