A davit device and hoisting method for superstructure hoisting

Abstract

The application provides a davit device and a hoisting method for superstructure hoisting, the davit device comprises a female plate, an elbow plate and a web plate, the female plate comprises a first part, a second part and a third part arranged side by side, the first part and the third part are arranged in parallel, and the first part and the second part form an included angle alpha; the davit hole on the first part is used during overall hoisting, the first part is removed after the overall hoisting is completed, and then the davit hole on the second part is used for floating hoisting. The davit device provided by the application can meet the overall hoisting demand and the floating hoisting demand, is helpful to shorten the construction period; in addition, the overall strength of the davit device is improved by arranging the elbow plate and the web plate, the hoisting reinforcement demand is reduced, and the steel waste is reduced; finally, the hoisting workload of subsequent cutting and polishing is small when the davit device provided by the application is used for hoisting, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, specifically to a hoisting device and method for superstructure hoisting. Background Technology

[0002] During the construction of the superstructure, due to the high completion rate during the hoisting of the superstructure, all equipment, piping systems, cables, and outfitting components are installed as much as possible, resulting in a large overall hoisting weight. In addition, in order to improve the utilization rate of the slipway, the superstructure is usually constructed on the assembly platform. After the construction is completed, the gantry crane of the assembly platform is used to lift the superstructure onto a transport vehicle, and the superstructure is transported from the assembly platform to the slipway. Then, a floating crane is used to lift the superstructure from the transport vehicle onto the main hull of the ship on the slipway.

[0003] In existing technologies, two sets of lifting equipment schemes are usually required, one for whole lifting and one for floating lifting. Different lifting schemes require the installation of different lifting reinforcements. Moreover, when floating lifting, the wire rope is at a large angle to the vertical direction, and the lifting equipment is subjected to a large horizontal component force, which has a significant impact on the structural strength of the lifting equipment. In addition, the traditional lifting scheme involves a large amount of subsequent cutting and grinding work, which affects the slipway cycle and causes waste of resources. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the present invention provides a hoisting device and hoisting method for superstructure hoisting. The hoisting device includes a base plate, an elbow plate, and a web plate. The base plate includes a first part, a second part, and a third part arranged in parallel. The first part and the third part are arranged parallel to each other, and the first part and the second part form an included angle α. During whole-unit hoisting, the hoisting holes on the first part are used. After the whole-unit hoisting is completed, the first part is removed, and then the hoisting holes on the second part are used for floating hoisting. The hoisting device provided by the present invention can meet both whole-unit hoisting and floating hoisting requirements, which helps to shorten the construction cycle. In addition, by setting the elbow plate and the web plate, the overall strength of the hoisting device is improved, reducing the need for hoisting reinforcement and reducing steel waste. Finally, the hoisting device provided by the present invention requires less subsequent cutting and grinding work, which helps to improve production efficiency.

[0005] To achieve the above and other related objectives, the present invention provides a hoisting device for superstructure hoisting, comprising a base plate, the base plate comprising a first portion, a second portion and a third portion extending along a first direction, the first portion, the second portion and the third portion being arranged side by side in a second direction perpendicular to the first direction; the first portion and the third portion being arranged parallel to each other, the first portion and the second portion forming an angle α, α > 90° and α ≠ 180°; the first portion and the second portion are further provided with a plurality of hoisting holes evenly arranged in the first direction.

[0006] Optionally, a first bend line is formed between the first part and the second part, and a second bend line is formed between the second part and the third part.

[0007] Optionally, it may also include a plurality of elbow plates evenly arranged in the first direction, the elbow plates being disposed at both ends of the plurality of hoist holes and between adjacent hoist holes.

[0008] Optionally, the elbow plate includes a first elbow plate and a second elbow plate disposed opposite to each other, wherein the first elbow plate is located on a first surface of the mother plate and disposed on the surfaces of the first part and the second part; the second elbow plate is located on a second surface of the mother plate opposite to the first surface and disposed on the surfaces of the first part, the second part and the third part.

[0009] Optionally, it also includes a first web and a second web, wherein the first web is disposed on the first surface and the second surface of the first portion, and the second web is disposed on the first surface and the second surface of the second portion; both the first web and the second web are provided with through holes, and the positions of the through holes correspond one-to-one with the positions of the hanging horse holes.

[0010] The present invention also provides a hoisting method, comprising the following steps:

[0011] S1: Provide a hoisting device, wherein the hoisting device is any one of the above technical solutions for hoisting upper-level buildings;

[0012] S2: Weld the hoisting device to the superstructure, so that the third part of the hoisting device is connected to the outer wall panel of the superstructure.

[0013] S3: Hook the gantry crane hook onto the hoist hole located on the first part and lift the entire crane;

[0014] S4: After the entire hoisting is completed, cut and grind along the first angle line to remove the first part;

[0015] S5: Hook the hook onto the hoist hole located on the second part and perform floating hoisting.

[0016] Optionally, step S1 includes:

[0017] S11: Design a hoisting scheme based on the basic parameters, structural form, overall weight and center of gravity of the superstructure.

[0018] S12: Calculate the parameters of the hoisting device according to the hoisting scheme;

[0019] S13: Perform finite element calculations based on the hoisting scheme obtained in step S11 and the parameters of the hoisting device obtained in step S12, and verify the results to see if the calculation results meet the requirements. If they do not meet the requirements, repeat steps S11 to S12 until the calculation results meet the requirements.

[0020] S14: Assemble the hoisting device.

[0021] Optionally, the parameters of the hoisting device include the dimensions of the mother plate, the elbow plate, the web plate, and the degree of the angle α formed by the first part and the second part.

[0022] Optionally, step S4 may further include: cutting and removing the first elbow plate.

[0023] Optionally, after step S5, the method further includes: cutting and grinding along the second bend line to remove the second portion and the second elbow plate located on the second portion.

[0024] The hoisting device and hoisting method for superstructure hoisting provided by this invention have at least the following beneficial effects:

[0025] The hoisting device provided by this invention can meet both whole-unit hoisting and floating hoisting requirements, which helps to shorten the construction cycle. In addition, by setting up elbow plates and web plates, the overall strength of the hoisting device is improved, reducing the need for hoisting reinforcement and reducing steel waste. Finally, when using the hoisting device provided by this invention for hoisting, the subsequent cutting and grinding work is less, which helps to improve production efficiency. Attached Figure Description

[0026] Figure 1 The image shown is a front view of the hoisting device provided in Embodiment 1.

[0027] Figure 2a The image shown is a side view of the elbow plate in the hoisting device provided in Embodiment 1.

[0028] Figure 2b The image shown is a side view of the web of the hoisting device provided in Embodiment 1.

[0029] Figure 3 The diagram shows the installation structure of the hoisting device during the whole-house hoisting process in Embodiment 2.

[0030] Figure 4 This is a schematic diagram of the floating crane in Example 2.

[0031] Component designation explanation

[0032] 10 Motherboard

[0033] 11 Part 1

[0034] 12 Part Two

[0035] 13 Part Three

[0036] 100 hanging holes

[0037] 101 First angle line

[0038] 102 Second angle line

[0039] 110 First surface of the motherboard

[0040] The second surface of the 120 motherboard

[0041] 20 Elbow Plate

[0042] 21 First elbow plate

[0043] 22 Second elbow plate

[0044] 30 Web

[0045] 31 First web plate

[0046] 32 Second web

[0047] 41 Component Strength

[0048] 42 Upper deck Detailed Implementation

[0049] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0050] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Although the illustrations only show components related to the present invention and are not drawn according to the actual number, shape and size of the components, the shape, quantity, positional relationship and proportion of each component can be arbitrarily changed under the premise of realizing the technical solution of this invention, and the layout of the components may also be more complex.

[0051] Example 1

[0052] This embodiment provides a hoisting device for lifting upper floors of buildings, such as... Figure 1 As shown, it includes a mother plate 10, a web plate 30 and a plurality of elbow plates 20 disposed on the mother plate 10, the elbow plates 20 being arranged along a second direction ( Figure 1 Extending in the Z-axis direction (as shown), and multiple elbow plates 20 in the first direction ( Figure 1 The web plates 30 are evenly distributed along the X-axis direction shown; the web plates 30 are arranged on the surface of the mother plate 10 along the first direction (as shown). Figure 1 Extending along the X-axis (as shown).

[0053] like Figure 1 As shown, the mother plate 10 includes components along a first direction ( Figure 1 The first portion 11, the second portion 12, and the third portion 13 extend along a second direction perpendicular to the first direction (shown in the X-axis direction). Figure 1 (As shown in the Z-axis direction) arranged side by side. (Refer to...) Figure 2a As shown, the first part 11 and the third part 13 are arranged in parallel, and the first part 11 and the second part 12 form an angle α, where α > 90° and α ≠ 180°. For details, refer to... Figure 4 As shown, the included angle α depends on the angle β formed by the hoisting rope and the plane YOZ during the floating process. The sum of included angle α and included angle β should be equal to 180°. As an example, a first bend line 101 is formed between the first part 11 and the second part 12, and a second bend line 102 is formed between the second part 12 and the third part 13.

[0054] like Figure 1 As shown, the first part 11 and the second part 12 are also provided with a plurality of [facilities] in the first direction (…). Figure 1 The lifting hook holes 100, evenly arranged in the X-axis direction (as shown), are used to place the lifting hook during hoisting. As an example, the number of lifting hook holes 100 is determined by the mother plate 10 in the first direction (…). Figure 1 The length of the first part 11 (in the X-axis direction) is determined by the length of the first part 11. In this embodiment, four hanging holes 100 are distributed on both the first part 11 and the second part 12.

[0055] like Figure 1 As shown, multiple elbow plates 20 in the first direction ( Figure 1 The elbow plates 20 are evenly arranged in the X-axis direction (as shown), and are disposed at both ends of the plurality of hoist holes 100 and between adjacent hoist holes 100 to improve the stability of the hoist device. In this embodiment, since the hoist holes 100 are evenly arranged in the first direction (as shown in the X-axis direction), the elbow plates 20 are disposed at both ends of the plurality of hoist holes 100 and between adjacent hoist holes 100 to improve the stability of the hoist device. Figure 1 The number of elbow plates 20 (in the X-axis direction shown) is four, therefore the number of elbow plates 20 is five. As an example, the straight line where the elbow plate 20 is located coincides with the straight line where the component strong bracket 41 is located on the ship, and welding holes (not shown in the figure) are added at the required welding locations; in addition, the distance d between the elbow plate 20 located at both ends of the plurality of lifting holes 100 and the side edge of the mother plate 10 is at least 100mm.

[0056] like Figure 2aAs shown, the elbow plate 20 includes a first elbow plate 21 and a second elbow plate 22 disposed opposite to each other. As an example, the first elbow plate 21 is located on the first surface 110 of the mother plate 10, i.e., on the outside of the superstructure during hoisting. The first elbow plate 21 is disposed on the surfaces of the first portion 11 and the second portion 12, i.e., in the second direction ( Figure 2a (As shown in the Z-axis direction), one end of the first elbow plate 21 extends to the edge of the first part 11 away from the first bend line 101, and the other end is located on the side of the second bend line 102 away from the third part 13; the second elbow plate 22 is located on the second surface 120 of the mother plate opposite to the first surface 110, that is, it is located inside the superstructure during hoisting. The second elbow plate 22 is disposed on the surfaces of the first part 11, the second part 12, and the third part 13, that is, in the second direction ( Figure 2a (As shown in the Z-axis direction), one end of the second elbow plate 22 extends to the edge of the first part 11 away from the first bend line 101, and the other end extends to the surface of the upper deck 42 of the ship.

[0057] Reference Figure 1 and Figure 2b As shown, a web plate 30 is also provided on the mother plate 10 to enhance the stability of the device. The web plate 30 includes a first web plate 31 and a second web plate 32, wherein the first web plate 31 is disposed on the first surface 110 and the second surface 120 of the first part 11, and the second web plate 32 is disposed on the first surface 110 and the second surface 120 of the second part 12. Figure 1 As shown, in the first direction ( Figure 1 (As shown in the X-axis direction), the length of the first web 31 and the second web 32 can cover the positions of the multiple hanging holes 100 evenly arranged in the first direction, and both ends of the first web 31 and the second web 32 are semi-circular structures; as an example, the first web 31 and the second web 32 are both provided with through holes, the positions of which correspond one-to-one with the positions of the hanging holes 100, and the size of the through holes is equal to the size of the hanging holes 100.

[0058] Example 2

[0059] This embodiment provides a hoisting method, including the following steps:

[0060] S1: Provide a gantry crane device;

[0061] First, a hoisting plan is designed based on the basic parameters, structural form, overall weight, and center of gravity of the superstructure to be hoisted.

[0062] Next, the parameters of the hoisting device are calculated according to the hoisting plan, including the dimensions of the mother plate 10, the elbow plate 20, the web plate 30, and the degree of the angle α formed by the first part 11 and the second part 12.

[0063] This embodiment takes the hoisting of the superstructure of a container ship as an example. During the design of the crane setup, due to the massive weight of the superstructure section (approximately 1134 tons), the superstructure was constructed on the assembly platform. After construction, a 1600-ton gantry crane from the assembly platform was used to lift the entire structure onto a transport vehicle. The superstructure was then transported from the assembly platform to the slipway, and finally, a 1600-ton floating crane was used to lift it from the transport vehicle onto the main hull of the ship on the slipway. Considering the lifting capacity and range of both the 1600-ton gantry crane and the 1600-ton floating crane, and taking into account the center of gravity of the superstructure section, the crane setup was arranged on both sides of the bow and stern endwalls, with a center-to-center distance of 18 meters between the two crane setups. According to the hoisting plan, the thickness of the mother plate 10 is designed to be 20mm, the height of the first part 11 is 530mm, the height of the second part 12 is 535mm, the height of the third part 13 is 1200mm, the thickness of the first web plate 31 and the second web plate 32 is 22mm, the thickness of the first elbow plate 21 and the second elbow plate 22 is 16mm, and the width of the widest part of the second elbow plate 22 is 500mm. Calculations show that when using a 1600-ton floating crane, the angle β formed by the hoisting rope and the plane YOZ is 21°. Since α + β = 180°, α is 159°.

[0064] Next, finite element analysis (FEM) calculations were performed based on the hoisting plan and the parameters of the hoisting device. The results were then checked to verify whether they met the requirements. If not, the above steps were repeated until the results met the requirements. In this embodiment, the maximum stress calculated by the finite element analysis was 189.3 MPa, and the maximum deformation was 6.8 mm, both of which met the specifications.

[0065] Finally, the hoisting device is assembled. As an example, the hoisting device provided in this embodiment is the same as the hoisting device for upper-level building provided in Embodiment 1. Its specific structure is described in Embodiment 1 and will not be repeated here.

[0066] S2: Weld the hoisting device to the superstructure, so that the third part of the hoisting device is connected to the outer wall panel of the superstructure.

[0067] like Figure 3 As shown, the hoisting device 1000 is installed on the upper deck 42 of the superstructure 2000 and welded to make the third part 13 of the mother plate connect with the outer wall panel of the superstructure 2000, and the mother plate 10 replaces part of the outer wall panel. At the same time, in order to ensure strength, the weld leg within 1m of the hoisting area is increased by 1mm to 2mm, and continuous welding is required.

[0068] S3: Hook the gantry crane hook onto the hoist hole located on the first part and lift the entire crane;

[0069] like Figure 3As shown, the hook of the gantry crane (not shown in the figure) is hooked onto the hoisting hole 100 located on the first part 11 for lifting. In this embodiment, a trial lift is first performed, that is, the upper building structure 2000 is lifted 200mm and stopped to observe whether there are any abnormalities in the steel wire, shackles, hoisting device, and whether the overall posture is normal. If there are no abnormalities, the prescribed lifting is then carried out.

[0070] S4: After the entire hoisting is completed, cut and grind along the first angle line to remove the first part;

[0071] As an example, after the entire hoisting is completed, the hoisting device needs to be processed before the floating crane starts. Specifically, it is cut along the first fold line 101 to remove the first part 11 of the mother plate and the second elbow plate 22 that contacts the first part 11, and the first elbow plate 21 is completely removed; after cutting, the cut edges are ground with a grinding amount of less than or equal to 5mm.

[0072] S5: Hook the hook onto the hoist hole located on the second part and perform floating hoisting.

[0073] Reference Figure 1 and Figure 4 As shown, the hook is hooked onto the hoist hole 100 located on the second part 12 for floating hoisting. In this embodiment, a trial hoisting is performed first, that is, the upper building structure 2000 is lifted 200mm and stopped to observe whether there are any abnormalities in the steel wire, shackles, hoisting device, and whether the overall posture is normal. If there are no abnormalities, the prescribed hoisting is then carried out.

[0074] After the floating crane is completed, it is cut along the second bend line 102 to remove the second part 12 and the second elbow plate 22 that is in contact with the second part 12. After cutting, the cut edges are ground with a grinding amount of less than or equal to 5mm. The remaining third part 13 of the mother plate is retained on the outer wall panel of the superstructure 2000 to replace part of the outer wall panel.

[0075] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A hoisting device for lifting equipment in upper-level buildings, characterized in that, The system includes a mother plate comprising a first portion, a second portion, and a third portion extending along a first direction, wherein the first portion, the second portion, and the third portion are arranged side-by-side in a second direction perpendicular to the first direction; the first portion and the third portion are arranged parallel to each other, and the first portion and the second portion form an angle α, where α > 90° and α ≠ 180°; the first portion and the second portion are also provided with a plurality of hanging holes evenly arranged in the first direction, a first angle line is formed between the first portion and the second portion, and a second angle line is formed between the second portion and the third portion; The hoisting device for superstructure hoisting also includes a plurality of elbow plates evenly arranged in the first direction. The elbow plates are disposed at both ends of the plurality of hoisting holes and between adjacent hoisting holes. The elbow plates include a first elbow plate and a second elbow plate disposed opposite to each other. The first elbow plate is located on the first surface of the mother plate and is disposed on the surfaces of the first part and the second part. The second elbow plate is located on the second surface of the mother plate opposite to the first surface and is disposed on the surfaces of the first part, the second part and the third part. The hoisting method for the crane device used for hoisting superstructures includes the following steps: S1: Provide a hoisting device, wherein the hoisting device is the hoisting device for hoisting the superstructure as described above; S2: Weld the hoisting device to the upper building, so that the third part of the hoisting device is connected to the outer wall panel of the upper building; S3: Hook the gantry crane hook onto the hoist hole located on the first part and lift the entire crane; S4: After the entire hoisting is completed, cut and grind along the first angle line to remove the first part; S5: Hook the hook onto the hoist hole located on the second part and perform floating hoisting.

2. The hoisting device for superstructure hoisting according to claim 1, characterized in that, It also includes a first web and a second web, wherein the first web is disposed on the first surface and the second surface of the first part, and the second web is disposed on the first surface and the second surface of the second part; both the first web and the second web are provided with through holes, and the positions of the through holes correspond one-to-one with the positions of the hanging horse holes.

3. The hoisting device for superstructure hoisting according to claim 2, characterized in that, Step S1 includes: S11: Design a hoisting scheme based on the basic parameters, structural form, overall weight and center of gravity of the superstructure; S12: Calculate the parameters of the hoisting device according to the hoisting scheme; S13: Perform finite element calculations based on the hoisting scheme obtained in step S11 and the parameters of the hoisting device obtained in step S12, and verify the results to see if the calculation results meet the requirements. If they do not meet the requirements, repeat steps S11 to S12 until the calculation results meet the requirements. S14: Assemble the hoisting device.

4. The hoisting device for superstructure hoisting according to claim 3, characterized in that, The parameters of the hoisting device include the dimensions of the mother plate, the first elbow plate, the second elbow plate, the first web plate, the second web plate, and the degree of the angle α formed by the first part and the second part.

5. The hoisting device for superstructure hoisting according to claim 1, characterized in that, Step S4 further includes: cutting and removing the first elbow plate.

6. The hoisting device for superstructure hoisting according to claim 1, characterized in that, After step S5, the process further includes cutting and grinding along the second bend line to remove the second portion and the second elbow plate located on the second portion.

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